diff --git a/chat/README.md b/chat/README.md
new file mode 100644
index 0000000..7410db8
--- /dev/null
+++ b/chat/README.md
@@ -0,0 +1,40 @@
+# Chat Service
+
+The chat service is an example Micro service which leverages bidirectional streaming, the store and events to build a chat backend. There is both a server and client which can be run together to demonstrate the application (see client/main.go for more instructions on running the service).
+
+The service is documented inline and is designed to act as a reference for the events package.
+
+### Calling the service
+
+You can call the service via the CLI:
+
+Create a chat:
+```bash
+> micro chat new --user_ids=JohnBarry
+{
+	"chat_id": "3c9ea66c-d516-45d4-abe8-082089e18b27"
+}
+```
+
+Send a message to the chat:
+```bash
+> micro chat send --chat_id=bed4f0f0-da12-46d2-90d2-17ae1714a214 --user_id=John --subject=Hello --text='Hey Barry'
+{}
+```
+
+View the chat history
+```bash
+> micro chat history --chat_id=bed4f0f0-da12-46d2-90d2-17ae1714a214
+{
+	"messages": [
+		{
+			"id": "a61284a8-f471-4734-9192-640d89762e98",
+			"client_id": "6ba0d2a6-96fa-47d8-8f6f-7f75b4cc8b3e",
+			"chat_id": "bed4f0f0-da12-46d2-90d2-17ae1714a214",
+			"user_id": "John",
+			"subject": "Hello",
+			"text": "Hey Barry"
+		}
+	]
+}
+```
\ No newline at end of file
diff --git a/chat/client/main.go b/chat/client/main.go
new file mode 100644
index 0000000..9091b34
--- /dev/null
+++ b/chat/client/main.go
@@ -0,0 +1,121 @@
+// Package main is a client for the chat service to demonstrate how it would work for a client. To
+// run the client, first launch the chat service by running `micro run ./chat` from the top level of
+// this repo. Then run `micro run ./chat/client` and `micro logs -f client` to follow the logs of
+// the client.
+package main
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/micro/micro/v3/service"
+	"github.com/micro/micro/v3/service/context/metadata"
+	"github.com/micro/micro/v3/service/logger"
+	chat "github.com/micro/services/chat/proto"
+)
+
+var (
+	userOneID = "user-one-" + uuid.New().String()
+	userTwoID = "user-two-" + uuid.New().String()
+)
+
+func main() {
+	// create a chat service client
+	srv := service.New()
+	cli := chat.NewChatService("chat", srv.Client())
+
+	// create a chat for our users
+	userIDs := []string{userOneID, userTwoID}
+	nRsp, err := cli.New(context.TODO(), &chat.NewRequest{UserIds: userIDs})
+	if err != nil {
+		logger.Fatalf("Error creating the chat: %v", err)
+	}
+	chatID := nRsp.GetChatId()
+	logger.Infof("Chat Created. ID: %v", chatID)
+
+	// list the number messages in the chat history
+	hRsp, err := cli.History(context.TODO(), &chat.HistoryRequest{ChatId: chatID})
+	if err != nil {
+		logger.Fatalf("Error getting the chat history: %v", err)
+	}
+	logger.Infof("Chat has %v message(s)", len(hRsp.Messages))
+
+	// create a channel to handle errors
+	errChan := make(chan error)
+
+	// run user one
+	go func() {
+		ctx := metadata.NewContext(context.TODO(), metadata.Metadata{
+			"user-id": userOneID, "chat-id": chatID,
+		})
+		stream, err := cli.Connect(ctx)
+		if err != nil {
+			errChan <- err
+			return
+		}
+
+		for i := 1; true; i++ {
+			// send a message to the chat
+			err = stream.Send(&chat.Message{
+				ClientId: uuid.New().String(),
+				SentAt:   time.Now().Unix(),
+				Subject:  "Message from user one",
+				Text:     fmt.Sprintf("Message #%v", i),
+			})
+			if err != nil {
+				errChan <- err
+				return
+			}
+			logger.Infof("User one sent message")
+
+			// wait for user two to respond
+			msg, err := stream.Recv()
+			if err != nil {
+				errChan <- err
+				return
+			}
+			logger.Infof("User one recieved message %v from %v", msg.Text, msg.UserId)
+			time.Sleep(time.Second)
+		}
+	}()
+
+	// run user two
+	go func() {
+		ctx := metadata.NewContext(context.TODO(), metadata.Metadata{
+			"user-id": userTwoID, "chat-id": chatID,
+		})
+		stream, err := cli.Connect(ctx)
+		if err != nil {
+			errChan <- err
+			return
+		}
+
+		for i := 1; true; i++ {
+			// send a response to the chat
+			err = stream.Send(&chat.Message{
+				ClientId: uuid.New().String(),
+				SentAt:   time.Now().Unix(),
+				Subject:  "Response from user two",
+				Text:     fmt.Sprintf("Response #%v", i),
+			})
+			if err != nil {
+				errChan <- err
+				return
+			}
+			logger.Infof("User two sent message")
+
+			// wait for a message from user one
+			msg, err := stream.Recv()
+			if err != nil {
+				errChan <- err
+				return
+			}
+			logger.Infof("User two recieved message %v from %v", msg.Text, msg.UserId)
+			time.Sleep(time.Second)
+		}
+	}()
+
+	logger.Fatal(<-errChan)
+}
diff --git a/chat/handler/handler.go b/chat/handler/handler.go
new file mode 100644
index 0000000..5d46153
--- /dev/null
+++ b/chat/handler/handler.go
@@ -0,0 +1,305 @@
+package handler
+
+import (
+	"context"
+	"sort"
+	"strings"
+
+	"github.com/google/uuid"
+	"github.com/micro/micro/v3/service/context/metadata"
+	"github.com/micro/micro/v3/service/errors"
+	"github.com/micro/micro/v3/service/events"
+	"github.com/micro/micro/v3/service/logger"
+	"github.com/micro/micro/v3/service/store"
+
+	// it's standard to import the services own proto under the alias pb
+	pb "github.com/micro/services/chat/proto"
+)
+
+// New returns an initialized chat handler
+func New() pb.ChatHandler {
+	return new(handler)
+}
+
+const (
+	chatStoreKeyPrefix    = "chats/"
+	chatEventKeyPrefix    = "chats/"
+	messageStoreKeyPrefix = "messages/"
+)
+
+// handler satisfies the ChatHandler interface. You can see this inteface defined in chat.pb.micro.go
+type handler struct{}
+
+// New creates a chat for a group of users. The RPC is idempotent so if it's called multiple times
+// for the same users, the same response will be returned. It's good practice to design APIs as
+// idempotent since this enables safe retries.
+func (h *handler) New(ctx context.Context, req *pb.NewRequest, rsp *pb.NewResponse) error {
+	// in a real world application we would authorize the request to ensure the authenticated user
+	// is part of the chat they're attempting to create. We could do this by getting the user id from
+	// auth.AccountFromContext(ctx) and then validating the presence of their id in req.UserIds. If
+	// the user is not part of the request then we'd return a Forbidden error, which the micro api
+	// would transform to a 403 status code.
+
+	// validate the request
+	if len(req.UserIds) == 0 {
+		// Return a bad request error to the client, the first argument is a unique id which the client
+		// can check for. The second argument is a human readable description. Returning the correct type
+		// of error is important as it's used by the network to know if a request should be retried. Only
+		// 500 (InternalServerError) and 408 (Timeout) errors are retried.
+		return errors.BadRequest("chat.New.MissingUserIDs", "One or more user IDs are required")
+	}
+
+	// construct a key to identify the chat, we'll do this by sorting the user ids alphabetically and
+	// then joining them. When a service calls the store, the data returned will be automatically scoped
+	// to the service however it's still advised to use a prefix when writing data since this allows
+	// other types of keys to be written in the future. We'll make a copy of the req.UserIds object as
+	// it's a good practice to not mutate the request object.
+	sortedIDs := make([]string, len(req.UserIds))
+	copy(sortedIDs, req.UserIds)
+	sort.Strings(sortedIDs)
+
+	// key to lookup the chat in the store using, e.g. "chat/usera-userb-userc"
+	key := chatStoreKeyPrefix + strings.Join(sortedIDs, "-")
+
+	// read from the store to check if a chat with these users already exists
+	recs, err := store.Read(key)
+	if err == nil {
+		// if an error wasn't returned, at least one record was found. The value returned by the store
+		// is the bytes representation of the chat id. We'll convert this back into a string and return
+		// it to the client.
+		rsp.ChatId = string(recs[0].Value)
+		return nil
+	} else if err != store.ErrNotFound {
+		// if no records were found then we'd expect to get a store.ErrNotFound error returned. If this
+		// wasn't the case, the service could've experienced an issue connecting to the store so we should
+		// log the error and return an InternalServerError to the client, indicating the request should
+		// be retried
+		logger.Errorf("Error reading from the store. Key: %v. Error: %v", key, err)
+		return errors.InternalServerError("chat.New.Unknown", "Error reading from the store")
+	}
+
+	// no chat id was returned so we'll generate one, write it to the store and then return it to the
+	// client
+	chatID := uuid.New().String()
+	record := store.Record{Key: chatStoreKeyPrefix + chatID, Value: []byte(chatID)}
+	if err := store.Write(&record); err != nil {
+		logger.Errorf("Error writing to the store. Key: %v. Error: %v", record.Key, err)
+		return errors.InternalServerError("chat.New.Unknown", "Error writing to the store")
+	}
+
+	// The chat was successfully created so we'll log the event and then return the id to the client.
+	// Note that we'll use logger.Infof here vs the Errorf above.
+	logger.Infof("New chat created with ID %v", chatID)
+	rsp.ChatId = chatID
+	return nil
+}
+
+// History returns the historical messages in a chat
+func (h *handler) History(ctx context.Context, req *pb.HistoryRequest, rsp *pb.HistoryResponse) error {
+	// as per the New function, in a real world application we would authorize the request to ensure
+	// the authenticated user is part of the chat they're attempting to read the history of
+
+	// validate the request
+	if len(req.ChatId) == 0 {
+		return errors.BadRequest("chat.History.MissingChatID", "ChatID is missing")
+	}
+
+	// lookup the chat from the store to ensure it's valid
+	if _, err := store.Read(chatStoreKeyPrefix + req.ChatId); err == store.ErrNotFound {
+		return errors.BadRequest("chat.History.InvalidChatID", "Chat not found with this ID")
+	} else if err != nil {
+		logger.Errorf("Error reading from the store. Chat ID: %v. Error: %v", req.ChatId, err)
+		return errors.InternalServerError("chat.History.Unknown", "Error reading from the store")
+	}
+
+	// lookup the historical messages for the chat using the event store. lots of packages in micro
+	// support options, in this case we'll pass the ReadLimit option to restrict the number of messages
+	// we'll load from the events store.
+	messages, err := events.Read(chatEventKeyPrefix+req.ChatId, events.ReadLimit(50))
+	if err != nil {
+		logger.Errorf("Error reading from the event store. Chat ID: %v. Error: %v", req.ChatId, err)
+		return errors.InternalServerError("chat.History.Unknown", "Error reading from the event store")
+	}
+
+	// we've loaded the messages from the event store. next we need to serialize them and return them
+	// to the client. The message is stored in the event payload, to retrieve it we need to unmarshal
+	// the event into a message struct.
+	rsp.Messages = make([]*pb.Message, len(messages))
+	for i, ev := range messages {
+		var msg pb.Message
+		if err := ev.Unmarshal(&msg); err != nil {
+			logger.Errorf("Error unmarshaling event: %v", err)
+			return errors.InternalServerError("chat.History.Unknown", "Error unmarshaling event")
+		}
+		rsp.Messages[i] = &msg
+	}
+
+	return nil
+}
+
+// Send a single message to the chat, designed for ease of use via the API / CLI
+func (h *handler) Send(ctx context.Context, req *pb.SendRequest, rsp *pb.SendResponse) error {
+	// validate the request
+	if len(req.ChatId) == 0 {
+		return errors.BadRequest("chat.Send.MissingChatID", "ChatID is missing")
+	}
+	if len(req.UserId) == 0 {
+		return errors.BadRequest("chat.Send.MissingUserID", "UserID is missing")
+	}
+	if len(req.Text) == 0 {
+		return errors.BadRequest("chat.Send.MissingText", "Text is missing")
+	}
+
+	// construct the message
+	msg := &pb.Message{
+		Id:       uuid.New().String(),
+		ClientId: req.ClientId,
+		ChatId:   req.ChatId,
+		UserId:   req.UserId,
+		Subject:  req.Subject,
+		Text:     req.Text,
+	}
+
+	// default the client id if not provided
+	if len(msg.ClientId) == 0 {
+		msg.ClientId = uuid.New().String()
+	}
+
+	// create the message
+	return h.createMessage(msg)
+}
+
+// Connect to a chat using a bidirectional stream enabling the client to send and recieve messages
+// over a single RPC. When a message is sent on the stream, it will be added to the chat history
+// and sent to the other connected users. When opening the connection, the client should provide
+// the chat_id and user_id in the context so the server knows which messages to stream.
+func (h *handler) Connect(ctx context.Context, stream pb.Chat_ConnectStream) error {
+	// the client passed the chat id and user id in the request context. we'll load that information
+	// now and validate it. If any information is missing we'll return a BadRequest error to the client
+	userID, ok := metadata.Get(ctx, "user-id")
+	if !ok {
+		return errors.BadRequest("chat.Connect.MissingUserID", "UserID missing in context")
+	}
+	chatID, ok := metadata.Get(ctx, "chat-id")
+	if !ok {
+		return errors.BadRequest("chat.Connect.MissingChatID", "ChatId missing in context")
+	}
+
+	// lookup the chat from the store to ensure it's valid
+	if _, err := store.Read(chatStoreKeyPrefix + chatID); err == store.ErrNotFound {
+		return errors.BadRequest("chat.Connect.InvalidChatID", "Chat not found with this ID")
+	} else if err != nil {
+		logger.Errorf("Error reading from the store. Chat ID: %v. Error: %v", chatID, err)
+		return errors.InternalServerError("chat.Connect.Unknown", "Error reading from the store")
+	}
+
+	// as per the New and Connect functions, at this point in a real world application we would
+	// authorize the request to ensure the authenticated user is part of the chat they're attempting
+	// to read the history of
+
+	// create a new context which can be cancelled, in the case either the consumer of publisher errors
+	// we don't want one to keep running in the background
+	cancelCtx, cancel := context.WithCancel(ctx)
+	defer cancel()
+
+	// create a channel to send errors on, because the subscriber / publisher will run in seperate go-
+	// routines, they need a way of returning errors to the client
+	errChan := make(chan error)
+
+	// create an event stream to consume messages posted by other users into the chat. we'll use the
+	// user id as a queue to ensure each user recieves the message
+	evStream, err := events.Subscribe(chatEventKeyPrefix+chatID, events.WithQueue(userID))
+	if err != nil {
+		logger.Errorf("Error streaming events. Chat ID: %v. Error: %v", chatID, err)
+		return errors.InternalServerError("chat.Connect.Unknown", "Error connecting to the event stream")
+	}
+	go func() {
+		for {
+			select {
+			case <-cancelCtx.Done():
+				// the context has been cancelled or timed out, stop subscribing to new messages
+				return
+			case ev := <-evStream:
+				// recieved a message, unmarshal it into a message struct. if an error occurs log it and
+				// cancel the context
+				var msg pb.Message
+				if err := ev.Unmarshal(&msg); err != nil {
+					logger.Errorf("Error unmarshaling message. ChatID: %v. Error: %v", chatID, err)
+					errChan <- err
+					return
+				}
+
+				// ignore any messages published by the current user
+				if msg.UserId == userID {
+					continue
+				}
+
+				// publish the message to the stream
+				if err := stream.Send(&msg); err != nil {
+					logger.Errorf("Error sending message to stream. ChatID: %v. Message ID: %v. Error: %v", chatID, msg.Id, err)
+					errChan <- err
+					return
+				}
+			}
+		}
+	}()
+
+	// transform the stream.Recv into a channel which can be used in the select statement below
+	msgChan := make(chan *pb.Message)
+	go func() {
+		for {
+			msg, err := stream.Recv()
+			if err != nil {
+				errChan <- err
+				close(msgChan)
+				return
+			}
+			msgChan <- msg
+		}
+	}()
+
+	for {
+		select {
+		case <-cancelCtx.Done():
+			// the context has been cancelled or timed out, stop subscribing to new messages
+			return nil
+		case err := <-errChan:
+			// an error occured in another goroutine, terminate the stream
+			return err
+		case msg := <-msgChan:
+			// set the defaults
+			msg.UserId = userID
+			msg.ChatId = chatID
+
+			// create the message
+			if err := h.createMessage(msg); err != nil {
+				return err
+			}
+		}
+	}
+}
+
+// createMessage is a helper function which creates a message in the event stream. It handles the
+// logic for ensuring client id is unique.
+func (h *handler) createMessage(msg *pb.Message) error {
+	// a message was recieved from the client. validate it hasn't been recieved before
+	if _, err := store.Read(messageStoreKeyPrefix + msg.ClientId); err == nil {
+		// the message has already been processed
+		return nil
+	} else if err != store.ErrNotFound {
+		// an unexpected error occured
+		return err
+	}
+
+	// send the message to the event stream
+	if err := events.Publish(chatEventKeyPrefix+msg.ChatId, msg); err != nil {
+		return err
+	}
+
+	// record the messages client id
+	if err := store.Write(&store.Record{Key: messageStoreKeyPrefix + msg.ClientId}); err != nil {
+		return err
+	}
+
+	return nil
+}
diff --git a/chat/main.go b/chat/main.go
new file mode 100644
index 0000000..46d608b
--- /dev/null
+++ b/chat/main.go
@@ -0,0 +1,25 @@
+package main
+
+import (
+	"github.com/micro/micro/v3/service"
+	"github.com/micro/micro/v3/service/logger"
+
+	"github.com/micro/services/chat/handler"
+	pb "github.com/micro/services/chat/proto"
+)
+
+func main() {
+	// Create the service
+	srv := service.New(
+		service.Name("chat"),
+		service.Version("latest"),
+	)
+
+	// Register the handler against the server
+	pb.RegisterChatHandler(srv.Server(), handler.New())
+
+	// Run the service
+	if err := srv.Run(); err != nil {
+		logger.Fatal(err)
+	}
+}
diff --git a/chat/proto/chat.pb.go b/chat/proto/chat.pb.go
new file mode 100644
index 0000000..cca8e16
--- /dev/null
+++ b/chat/proto/chat.pb.go
@@ -0,0 +1,427 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: chat/proto/chat.proto
+
+package chat
+
+import (
+	fmt "fmt"
+	proto "github.com/golang/protobuf/proto"
+	math "math"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+
+// NewRequest contains the infromation needed to create a new chat
+type NewRequest struct {
+	UserIds              []string `protobuf:"bytes,1,rep,name=user_ids,json=userIds,proto3" json:"user_ids,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *NewRequest) Reset()         { *m = NewRequest{} }
+func (m *NewRequest) String() string { return proto.CompactTextString(m) }
+func (*NewRequest) ProtoMessage()    {}
+func (*NewRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_825b1469f80f958d, []int{0}
+}
+
+func (m *NewRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_NewRequest.Unmarshal(m, b)
+}
+func (m *NewRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_NewRequest.Marshal(b, m, deterministic)
+}
+func (m *NewRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_NewRequest.Merge(m, src)
+}
+func (m *NewRequest) XXX_Size() int {
+	return xxx_messageInfo_NewRequest.Size(m)
+}
+func (m *NewRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_NewRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_NewRequest proto.InternalMessageInfo
+
+func (m *NewRequest) GetUserIds() []string {
+	if m != nil {
+		return m.UserIds
+	}
+	return nil
+}
+
+// NewResponse contains the chat id for the users
+type NewResponse struct {
+	ChatId               string   `protobuf:"bytes,1,opt,name=chat_id,json=chatId,proto3" json:"chat_id,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *NewResponse) Reset()         { *m = NewResponse{} }
+func (m *NewResponse) String() string { return proto.CompactTextString(m) }
+func (*NewResponse) ProtoMessage()    {}
+func (*NewResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_825b1469f80f958d, []int{1}
+}
+
+func (m *NewResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_NewResponse.Unmarshal(m, b)
+}
+func (m *NewResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_NewResponse.Marshal(b, m, deterministic)
+}
+func (m *NewResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_NewResponse.Merge(m, src)
+}
+func (m *NewResponse) XXX_Size() int {
+	return xxx_messageInfo_NewResponse.Size(m)
+}
+func (m *NewResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_NewResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_NewResponse proto.InternalMessageInfo
+
+func (m *NewResponse) GetChatId() string {
+	if m != nil {
+		return m.ChatId
+	}
+	return ""
+}
+
+// HistoryRequest contains the id of the chat we want the history for. This RPC will return all
+// historical messages, however in a real life application we'd introduce some form of pagination
+// here, only loading the older messages when required.
+type HistoryRequest struct {
+	ChatId               string   `protobuf:"bytes,1,opt,name=chat_id,json=chatId,proto3" json:"chat_id,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *HistoryRequest) Reset()         { *m = HistoryRequest{} }
+func (m *HistoryRequest) String() string { return proto.CompactTextString(m) }
+func (*HistoryRequest) ProtoMessage()    {}
+func (*HistoryRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_825b1469f80f958d, []int{2}
+}
+
+func (m *HistoryRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_HistoryRequest.Unmarshal(m, b)
+}
+func (m *HistoryRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_HistoryRequest.Marshal(b, m, deterministic)
+}
+func (m *HistoryRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_HistoryRequest.Merge(m, src)
+}
+func (m *HistoryRequest) XXX_Size() int {
+	return xxx_messageInfo_HistoryRequest.Size(m)
+}
+func (m *HistoryRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_HistoryRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_HistoryRequest proto.InternalMessageInfo
+
+func (m *HistoryRequest) GetChatId() string {
+	if m != nil {
+		return m.ChatId
+	}
+	return ""
+}
+
+// HistoryResponse contains the historical messages in a chat
+type HistoryResponse struct {
+	Messages             []*Message `protobuf:"bytes,1,rep,name=messages,proto3" json:"messages,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}   `json:"-"`
+	XXX_unrecognized     []byte     `json:"-"`
+	XXX_sizecache        int32      `json:"-"`
+}
+
+func (m *HistoryResponse) Reset()         { *m = HistoryResponse{} }
+func (m *HistoryResponse) String() string { return proto.CompactTextString(m) }
+func (*HistoryResponse) ProtoMessage()    {}
+func (*HistoryResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_825b1469f80f958d, []int{3}
+}
+
+func (m *HistoryResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_HistoryResponse.Unmarshal(m, b)
+}
+func (m *HistoryResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_HistoryResponse.Marshal(b, m, deterministic)
+}
+func (m *HistoryResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_HistoryResponse.Merge(m, src)
+}
+func (m *HistoryResponse) XXX_Size() int {
+	return xxx_messageInfo_HistoryResponse.Size(m)
+}
+func (m *HistoryResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_HistoryResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_HistoryResponse proto.InternalMessageInfo
+
+func (m *HistoryResponse) GetMessages() []*Message {
+	if m != nil {
+		return m.Messages
+	}
+	return nil
+}
+
+// SendRequest contains a single message to send to a chat
+type SendRequest struct {
+	// a client side id, should be validated by the server to make the request retry safe
+	ClientId string `protobuf:"bytes,1,opt,name=client_id,json=clientId,proto3" json:"client_id,omitempty"`
+	// id of the chat the message is being sent to / from
+	ChatId string `protobuf:"bytes,2,opt,name=chat_id,json=chatId,proto3" json:"chat_id,omitempty"`
+	// id of the user who sent the message
+	UserId string `protobuf:"bytes,3,opt,name=user_id,json=userId,proto3" json:"user_id,omitempty"`
+	// subject of the message
+	Subject string `protobuf:"bytes,4,opt,name=subject,proto3" json:"subject,omitempty"`
+	// text of the message
+	Text                 string   `protobuf:"bytes,5,opt,name=text,proto3" json:"text,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *SendRequest) Reset()         { *m = SendRequest{} }
+func (m *SendRequest) String() string { return proto.CompactTextString(m) }
+func (*SendRequest) ProtoMessage()    {}
+func (*SendRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_825b1469f80f958d, []int{4}
+}
+
+func (m *SendRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_SendRequest.Unmarshal(m, b)
+}
+func (m *SendRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_SendRequest.Marshal(b, m, deterministic)
+}
+func (m *SendRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_SendRequest.Merge(m, src)
+}
+func (m *SendRequest) XXX_Size() int {
+	return xxx_messageInfo_SendRequest.Size(m)
+}
+func (m *SendRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_SendRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_SendRequest proto.InternalMessageInfo
+
+func (m *SendRequest) GetClientId() string {
+	if m != nil {
+		return m.ClientId
+	}
+	return ""
+}
+
+func (m *SendRequest) GetChatId() string {
+	if m != nil {
+		return m.ChatId
+	}
+	return ""
+}
+
+func (m *SendRequest) GetUserId() string {
+	if m != nil {
+		return m.UserId
+	}
+	return ""
+}
+
+func (m *SendRequest) GetSubject() string {
+	if m != nil {
+		return m.Subject
+	}
+	return ""
+}
+
+func (m *SendRequest) GetText() string {
+	if m != nil {
+		return m.Text
+	}
+	return ""
+}
+
+// SendResponse is a blank message returned when a message is successfully created
+type SendResponse struct {
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *SendResponse) Reset()         { *m = SendResponse{} }
+func (m *SendResponse) String() string { return proto.CompactTextString(m) }
+func (*SendResponse) ProtoMessage()    {}
+func (*SendResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_825b1469f80f958d, []int{5}
+}
+
+func (m *SendResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_SendResponse.Unmarshal(m, b)
+}
+func (m *SendResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_SendResponse.Marshal(b, m, deterministic)
+}
+func (m *SendResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_SendResponse.Merge(m, src)
+}
+func (m *SendResponse) XXX_Size() int {
+	return xxx_messageInfo_SendResponse.Size(m)
+}
+func (m *SendResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_SendResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_SendResponse proto.InternalMessageInfo
+
+// Message sent to a chat
+type Message struct {
+	// id of the message, allocated by the server
+	Id string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	// a client side id, should be validated by the server to make the request retry safe
+	ClientId string `protobuf:"bytes,2,opt,name=client_id,json=clientId,proto3" json:"client_id,omitempty"`
+	// id of the chat the message is being sent to / from
+	ChatId string `protobuf:"bytes,3,opt,name=chat_id,json=chatId,proto3" json:"chat_id,omitempty"`
+	// id of the user who sent the message
+	UserId string `protobuf:"bytes,4,opt,name=user_id,json=userId,proto3" json:"user_id,omitempty"`
+	// time time the message was sent in unix format
+	SentAt int64 `protobuf:"varint,5,opt,name=sent_at,json=sentAt,proto3" json:"sent_at,omitempty"`
+	// subject of the message
+	Subject string `protobuf:"bytes,6,opt,name=subject,proto3" json:"subject,omitempty"`
+	// text of the message
+	Text                 string   `protobuf:"bytes,7,opt,name=text,proto3" json:"text,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Message) Reset()         { *m = Message{} }
+func (m *Message) String() string { return proto.CompactTextString(m) }
+func (*Message) ProtoMessage()    {}
+func (*Message) Descriptor() ([]byte, []int) {
+	return fileDescriptor_825b1469f80f958d, []int{6}
+}
+
+func (m *Message) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Message.Unmarshal(m, b)
+}
+func (m *Message) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Message.Marshal(b, m, deterministic)
+}
+func (m *Message) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Message.Merge(m, src)
+}
+func (m *Message) XXX_Size() int {
+	return xxx_messageInfo_Message.Size(m)
+}
+func (m *Message) XXX_DiscardUnknown() {
+	xxx_messageInfo_Message.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Message proto.InternalMessageInfo
+
+func (m *Message) GetId() string {
+	if m != nil {
+		return m.Id
+	}
+	return ""
+}
+
+func (m *Message) GetClientId() string {
+	if m != nil {
+		return m.ClientId
+	}
+	return ""
+}
+
+func (m *Message) GetChatId() string {
+	if m != nil {
+		return m.ChatId
+	}
+	return ""
+}
+
+func (m *Message) GetUserId() string {
+	if m != nil {
+		return m.UserId
+	}
+	return ""
+}
+
+func (m *Message) GetSentAt() int64 {
+	if m != nil {
+		return m.SentAt
+	}
+	return 0
+}
+
+func (m *Message) GetSubject() string {
+	if m != nil {
+		return m.Subject
+	}
+	return ""
+}
+
+func (m *Message) GetText() string {
+	if m != nil {
+		return m.Text
+	}
+	return ""
+}
+
+func init() {
+	proto.RegisterType((*NewRequest)(nil), "chat.NewRequest")
+	proto.RegisterType((*NewResponse)(nil), "chat.NewResponse")
+	proto.RegisterType((*HistoryRequest)(nil), "chat.HistoryRequest")
+	proto.RegisterType((*HistoryResponse)(nil), "chat.HistoryResponse")
+	proto.RegisterType((*SendRequest)(nil), "chat.SendRequest")
+	proto.RegisterType((*SendResponse)(nil), "chat.SendResponse")
+	proto.RegisterType((*Message)(nil), "chat.Message")
+}
+
+func init() { proto.RegisterFile("chat/proto/chat.proto", fileDescriptor_825b1469f80f958d) }
+
+var fileDescriptor_825b1469f80f958d = []byte{
+	// 370 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x74, 0x92, 0xcf, 0x4e, 0x3a, 0x31,
+	0x10, 0xc7, 0xd3, 0xdd, 0xfd, 0x6d, 0x61, 0xf8, 0x89, 0xda, 0x48, 0x58, 0xd7, 0x0b, 0xe9, 0x41,
+	0x41, 0x23, 0x18, 0x4c, 0x3c, 0x79, 0x31, 0x5c, 0xe4, 0x20, 0x87, 0xf5, 0x01, 0xc8, 0x42, 0x1b,
+	0x59, 0xa3, 0xbb, 0x48, 0x4b, 0xd0, 0x57, 0xf0, 0x65, 0x7c, 0x0b, 0x9f, 0xcb, 0xf4, 0x0f, 0xd0,
+	0x35, 0x72, 0x9b, 0xf9, 0xce, 0x74, 0xfa, 0xf9, 0x76, 0x0a, 0x8d, 0xe9, 0x2c, 0x95, 0xbd, 0xf9,
+	0xa2, 0x90, 0x45, 0x4f, 0x85, 0x5d, 0x1d, 0x92, 0x40, 0xc5, 0xf4, 0x0c, 0x60, 0xc4, 0x57, 0x09,
+	0x7f, 0x5b, 0x72, 0x21, 0xc9, 0x31, 0x54, 0x96, 0x82, 0x2f, 0xc6, 0x19, 0x13, 0x11, 0x6a, 0xf9,
+	0xed, 0x6a, 0x82, 0x55, 0x3e, 0x64, 0x82, 0x9e, 0x42, 0x4d, 0x37, 0x8a, 0x79, 0x91, 0x0b, 0x4e,
+	0x9a, 0x80, 0xd5, 0xf9, 0x71, 0xc6, 0x22, 0xd4, 0x42, 0xed, 0x6a, 0x12, 0xaa, 0x74, 0xc8, 0x68,
+	0x07, 0xea, 0xf7, 0x99, 0x90, 0xc5, 0xe2, 0x63, 0x3d, 0x74, 0x67, 0xeb, 0x2d, 0xec, 0x6f, 0x5a,
+	0xed, 0xd8, 0x0e, 0x54, 0x5e, 0xb9, 0x10, 0xe9, 0x13, 0x37, 0x00, 0xb5, 0xfe, 0x5e, 0x57, 0x33,
+	0x3f, 0x18, 0x35, 0xd9, 0x94, 0xe9, 0x27, 0x82, 0xda, 0x23, 0xcf, 0xd9, 0xfa, 0x9a, 0x13, 0xa8,
+	0x4e, 0x5f, 0x32, 0x9e, 0x3b, 0x17, 0x55, 0x8c, 0x30, 0x64, 0x2e, 0x83, 0xe7, 0x32, 0xa8, 0x82,
+	0x75, 0x1c, 0xf9, 0xa6, 0x60, 0x0c, 0x93, 0x08, 0xb0, 0x58, 0x4e, 0x9e, 0xf9, 0x54, 0x46, 0x81,
+	0x2e, 0xac, 0x53, 0x42, 0x20, 0x90, 0xfc, 0x5d, 0x46, 0xff, 0xb4, 0xac, 0x63, 0x5a, 0x87, 0xff,
+	0x86, 0xc5, 0xf8, 0xa0, 0x5f, 0x08, 0xb0, 0x45, 0x26, 0x75, 0xf0, 0x36, 0x44, 0x5e, 0xc6, 0xca,
+	0xa0, 0xde, 0x6e, 0x50, 0x7f, 0x17, 0x68, 0x50, 0x02, 0x6d, 0x02, 0x16, 0x6a, 0x58, 0x6a, 0x88,
+	0xfc, 0x24, 0x54, 0xe9, 0x9d, 0x74, 0x1d, 0x84, 0x7f, 0x3b, 0xc0, 0x5b, 0x07, 0xfd, 0x6f, 0x04,
+	0xc1, 0x60, 0x96, 0x4a, 0x72, 0x0e, 0xfe, 0x88, 0xaf, 0xc8, 0x81, 0x79, 0xf7, 0xed, 0xe7, 0x88,
+	0x0f, 0x1d, 0xc5, 0xae, 0xeb, 0x06, 0xb0, 0xdd, 0x20, 0x39, 0x32, 0xd5, 0xf2, 0xee, 0xe3, 0xc6,
+	0x2f, 0xd5, 0x9e, 0xbb, 0x84, 0x40, 0x3d, 0x17, 0xb1, 0x23, 0x9d, 0x35, 0xc6, 0xc4, 0x95, 0x6c,
+	0xfb, 0x05, 0xe0, 0x41, 0x91, 0xe7, 0x0a, 0xbd, 0xfc, 0x1d, 0xe2, 0x72, 0xda, 0x46, 0x57, 0x68,
+	0x12, 0xea, 0xef, 0x7d, 0xfd, 0x13, 0x00, 0x00, 0xff, 0xff, 0x81, 0x53, 0x8a, 0xc9, 0xf7, 0x02,
+	0x00, 0x00,
+}
diff --git a/chat/proto/chat.pb.micro.go b/chat/proto/chat.pb.micro.go
new file mode 100644
index 0000000..5e6ec91
--- /dev/null
+++ b/chat/proto/chat.pb.micro.go
@@ -0,0 +1,244 @@
+// Code generated by protoc-gen-micro. DO NOT EDIT.
+// source: chat/proto/chat.proto
+
+package chat
+
+import (
+	fmt "fmt"
+	proto "github.com/golang/protobuf/proto"
+	math "math"
+)
+
+import (
+	context "context"
+	api "github.com/micro/micro/v3/service/api"
+	client "github.com/micro/micro/v3/service/client"
+	server "github.com/micro/micro/v3/service/server"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ api.Endpoint
+var _ context.Context
+var _ client.Option
+var _ server.Option
+
+// Api Endpoints for Chat service
+
+func NewChatEndpoints() []*api.Endpoint {
+	return []*api.Endpoint{}
+}
+
+// Client API for Chat service
+
+type ChatService interface {
+	// New creates a chat for a group of users. The RPC is idempotent so if it's called multiple times
+	// for the same users, the same response will be returned. It's good practice to design APIs as
+	// idempotent since this enables safe retries.
+	New(ctx context.Context, in *NewRequest, opts ...client.CallOption) (*NewResponse, error)
+	// History returns the historical messages in a chat
+	History(ctx context.Context, in *HistoryRequest, opts ...client.CallOption) (*HistoryResponse, error)
+	// Send a single message to the chat
+	Send(ctx context.Context, in *SendRequest, opts ...client.CallOption) (*SendResponse, error)
+	// Connect to a chat using a bidirectional stream enabling the client to send and recieve messages
+	// over a single RPC. When a message is sent on the stream, it will be added to the chat history
+	// and sent to the other connected users. When opening the connection, the client should provide
+	// the chat_id and user_id in the context so the server knows which messages to stream.
+	Connect(ctx context.Context, opts ...client.CallOption) (Chat_ConnectService, error)
+}
+
+type chatService struct {
+	c    client.Client
+	name string
+}
+
+func NewChatService(name string, c client.Client) ChatService {
+	return &chatService{
+		c:    c,
+		name: name,
+	}
+}
+
+func (c *chatService) New(ctx context.Context, in *NewRequest, opts ...client.CallOption) (*NewResponse, error) {
+	req := c.c.NewRequest(c.name, "Chat.New", in)
+	out := new(NewResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *chatService) History(ctx context.Context, in *HistoryRequest, opts ...client.CallOption) (*HistoryResponse, error) {
+	req := c.c.NewRequest(c.name, "Chat.History", in)
+	out := new(HistoryResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *chatService) Send(ctx context.Context, in *SendRequest, opts ...client.CallOption) (*SendResponse, error) {
+	req := c.c.NewRequest(c.name, "Chat.Send", in)
+	out := new(SendResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *chatService) Connect(ctx context.Context, opts ...client.CallOption) (Chat_ConnectService, error) {
+	req := c.c.NewRequest(c.name, "Chat.Connect", &Message{})
+	stream, err := c.c.Stream(ctx, req, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return &chatServiceConnect{stream}, nil
+}
+
+type Chat_ConnectService interface {
+	Context() context.Context
+	SendMsg(interface{}) error
+	RecvMsg(interface{}) error
+	Close() error
+	Send(*Message) error
+	Recv() (*Message, error)
+}
+
+type chatServiceConnect struct {
+	stream client.Stream
+}
+
+func (x *chatServiceConnect) Close() error {
+	return x.stream.Close()
+}
+
+func (x *chatServiceConnect) Context() context.Context {
+	return x.stream.Context()
+}
+
+func (x *chatServiceConnect) SendMsg(m interface{}) error {
+	return x.stream.Send(m)
+}
+
+func (x *chatServiceConnect) RecvMsg(m interface{}) error {
+	return x.stream.Recv(m)
+}
+
+func (x *chatServiceConnect) Send(m *Message) error {
+	return x.stream.Send(m)
+}
+
+func (x *chatServiceConnect) Recv() (*Message, error) {
+	m := new(Message)
+	err := x.stream.Recv(m)
+	if err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+// Server API for Chat service
+
+type ChatHandler interface {
+	// New creates a chat for a group of users. The RPC is idempotent so if it's called multiple times
+	// for the same users, the same response will be returned. It's good practice to design APIs as
+	// idempotent since this enables safe retries.
+	New(context.Context, *NewRequest, *NewResponse) error
+	// History returns the historical messages in a chat
+	History(context.Context, *HistoryRequest, *HistoryResponse) error
+	// Send a single message to the chat
+	Send(context.Context, *SendRequest, *SendResponse) error
+	// Connect to a chat using a bidirectional stream enabling the client to send and recieve messages
+	// over a single RPC. When a message is sent on the stream, it will be added to the chat history
+	// and sent to the other connected users. When opening the connection, the client should provide
+	// the chat_id and user_id in the context so the server knows which messages to stream.
+	Connect(context.Context, Chat_ConnectStream) error
+}
+
+func RegisterChatHandler(s server.Server, hdlr ChatHandler, opts ...server.HandlerOption) error {
+	type chat interface {
+		New(ctx context.Context, in *NewRequest, out *NewResponse) error
+		History(ctx context.Context, in *HistoryRequest, out *HistoryResponse) error
+		Send(ctx context.Context, in *SendRequest, out *SendResponse) error
+		Connect(ctx context.Context, stream server.Stream) error
+	}
+	type Chat struct {
+		chat
+	}
+	h := &chatHandler{hdlr}
+	return s.Handle(s.NewHandler(&Chat{h}, opts...))
+}
+
+type chatHandler struct {
+	ChatHandler
+}
+
+func (h *chatHandler) New(ctx context.Context, in *NewRequest, out *NewResponse) error {
+	return h.ChatHandler.New(ctx, in, out)
+}
+
+func (h *chatHandler) History(ctx context.Context, in *HistoryRequest, out *HistoryResponse) error {
+	return h.ChatHandler.History(ctx, in, out)
+}
+
+func (h *chatHandler) Send(ctx context.Context, in *SendRequest, out *SendResponse) error {
+	return h.ChatHandler.Send(ctx, in, out)
+}
+
+func (h *chatHandler) Connect(ctx context.Context, stream server.Stream) error {
+	return h.ChatHandler.Connect(ctx, &chatConnectStream{stream})
+}
+
+type Chat_ConnectStream interface {
+	Context() context.Context
+	SendMsg(interface{}) error
+	RecvMsg(interface{}) error
+	Close() error
+	Send(*Message) error
+	Recv() (*Message, error)
+}
+
+type chatConnectStream struct {
+	stream server.Stream
+}
+
+func (x *chatConnectStream) Close() error {
+	return x.stream.Close()
+}
+
+func (x *chatConnectStream) Context() context.Context {
+	return x.stream.Context()
+}
+
+func (x *chatConnectStream) SendMsg(m interface{}) error {
+	return x.stream.Send(m)
+}
+
+func (x *chatConnectStream) RecvMsg(m interface{}) error {
+	return x.stream.Recv(m)
+}
+
+func (x *chatConnectStream) Send(m *Message) error {
+	return x.stream.Send(m)
+}
+
+func (x *chatConnectStream) Recv() (*Message, error) {
+	m := new(Message)
+	if err := x.stream.Recv(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
diff --git a/chat/proto/chat.proto b/chat/proto/chat.proto
new file mode 100644
index 0000000..991608d
--- /dev/null
+++ b/chat/proto/chat.proto
@@ -0,0 +1,77 @@
+syntax = "proto3";
+
+package chat;
+option go_package = "github.com/micro/services/chat/proto;chat";
+
+service Chat {
+  // New creates a chat for a group of users. The RPC is idempotent so if it's called multiple times
+  // for the same users, the same response will be returned. It's good practice to design APIs as
+  // idempotent since this enables safe retries.
+  rpc New(NewRequest) returns (NewResponse);
+  // History returns the historical messages in a chat
+  rpc History(HistoryRequest) returns (HistoryResponse);
+  // Send a single message to the chat
+  rpc Send(SendRequest) returns (SendResponse);
+  // Connect to a chat using a bidirectional stream enabling the client to send and recieve messages
+  // over a single RPC. When a message is sent on the stream, it will be added to the chat history 
+  // and sent to the other connected users. When opening the connection, the client should provide
+  // the chat_id and user_id in the context so the server knows which messages to stream.
+  rpc Connect(stream Message) returns (stream Message);
+}
+
+// NewRequest contains the infromation needed to create a new chat
+message NewRequest {
+  repeated string user_ids = 1;
+}
+
+// NewResponse contains the chat id for the users
+message NewResponse {
+  string chat_id = 1;
+}
+
+// HistoryRequest contains the id of the chat we want the history for. This RPC will return all 
+// historical messages, however in a real life application we'd introduce some form of pagination
+// here, only loading the older messages when required.
+message HistoryRequest {
+  string chat_id = 1;
+}
+
+// HistoryResponse contains the historical messages in a chat
+message HistoryResponse {
+  repeated Message messages = 1;
+}
+
+// SendRequest contains a single message to send to a chat
+message SendRequest {
+  // a client side id, should be validated by the server to make the request retry safe
+  string client_id = 1;
+  // id of the chat the message is being sent to / from
+  string chat_id = 2;
+  // id of the user who sent the message
+  string user_id = 3;
+  // subject of the message
+  string subject = 4;
+  // text of the message
+  string text = 5;
+}
+
+// SendResponse is a blank message returned when a message is successfully created
+message SendResponse {}
+
+// Message sent to a chat
+message Message {
+  // id of the message, allocated by the server
+  string id = 1;
+  // a client side id, should be validated by the server to make the request retry safe
+  string client_id = 2;
+  // id of the chat the message is being sent to / from
+  string chat_id = 3;
+  // id of the user who sent the message
+  string user_id = 4;
+  // time time the message was sent in unix format 
+  int64 sent_at = 5;
+  // subject of the message
+  string subject = 6;
+  // text of the message
+  string text = 7;
+}
\ No newline at end of file
diff --git a/go.sum b/go.sum
index 630fa5f..dcf025d 100644
--- a/go.sum
+++ b/go.sum
@@ -48,6 +48,7 @@ github.com/Azure/go-autorest/tracing v0.1.0/go.mod h1:ROEEAFwXycQw7Sn3DXNtEedEvd
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@@ -55,10 +56,13 @@ github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWX
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@@ -72,16 +76,20 @@ github.com/blang/semver v3.5.1+incompatible/go.mod h1:kRBLl5iJ+tD4TcOOxsy/0fnweb
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@@ -94,7 +102,6 @@ github.com/containerd/fifo v0.0.0-20190226154929-a9fb20d87448/go.mod h1:ODA38xgv
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@@ -138,8 +145,10 @@ github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2
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@@ -224,29 +233,43 @@ github.com/gorilla/mux v1.7.3 h1:gnP5JzjVOuiZD07fKKToCAOjS0yOpj/qPETTXCCS6hw=
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@@ -277,6 +300,7 @@ github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
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@@ -311,6 +335,18 @@ github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3Rllmb
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@@ -337,11 +373,13 @@ github.com/opencontainers/runc v0.0.0-20190115041553-12f6a991201f/go.mod h1:qT5X
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@@ -352,21 +390,29 @@ github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINE
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@@ -390,6 +436,7 @@ github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6Mwd
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@@ -403,7 +450,9 @@ github.com/tcnksm/go-gitconfig v0.1.2/go.mod h1:/8EhP4H7oJZdIPyT+/UIsG87kTzrzM4U
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@@ -422,6 +471,7 @@ github.com/xeipuuv/gojsonpointer v0.0.0-20180127040702-4e3ac2762d5f/go.mod h1:N2
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@@ -445,9 +495,11 @@ golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACk
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@@ -488,6 +540,7 @@ golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73r
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@@ -556,6 +609,7 @@ golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7w
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@@ -567,6 +621,7 @@ golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9/go.mod h1:h1NjWce9XRLGQEsW7w
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 golang.org/x/sys v0.0.0-20191204072324-ce4227a45e2e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191228213918-04cbcbbfeed8/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200106162015-b016eb3dc98e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200113162924-86b910548bc1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200122134326-e047566fdf82/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200202164722-d101bd2416d5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -579,6 +634,7 @@ golang.org/x/sys v0.0.0-20200501052902-10377860bb8e/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20200511232937-7e40ca221e25/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200515095857-1151b9dac4a9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200523222454-059865788121/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200615200032-f1bc736245b1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200625212154-ddb9806d33ae h1:Ih9Yo4hSPImZOpfGuA4bR/ORKTAbhZo2AbWNRCnevdo=
 golang.org/x/sys v0.0.0-20200625212154-ddb9806d33ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200803210538-64077c9b5642/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -620,6 +676,7 @@ golang.org/x/tools v0.0.0-20191130070609-6e064ea0cf2d/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20191216052735-49a3e744a425/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20191216173652-a0e659d51361/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20191227053925-7b8e75db28f4/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
+golang.org/x/tools v0.0.0-20200117065230-39095c1d176c/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20200117161641-43d50277825c/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20200122220014-bf1340f18c4a/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
@@ -718,6 +775,7 @@ google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlba
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU=
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
@@ -739,6 +797,7 @@ gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bl
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
@@ -758,3 +817,4 @@ k8s.io/kubernetes v1.13.0/go.mod h1:ocZa8+6APFNC2tX1DZASIbocyYT5jHzqFVsY5aoB7Jk=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
 rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
 rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
+sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=