Commit graph go-sdk/mcp/server_test.go
Author SHA1 Message Date
cryo
112ca4e3b1 mcp: Ensure keepalive goroutine is started exactly once 2025-08-19 09:46:54 -04:00
Matt L
75f9999590
feat(mcp): export initialized result in client session (#320)
Export ServerCapabilities and related subtypes and update protocol,
server, and tests to use exported types. Add InitializeResult method on
ClientSession for accessing the initialize result from sessions.

Fixes: https://github.com/modelcontextprotocol/go-sdk/issues/166

Co-authored-by: Shashank Pachava <spachava753@gmail.com>
2025-08-18 14:49:02 -04:00
Jonathan Amsterdam
6e03217c83
mcp: introduce Requests (#267)
Handlers and client/server methods take a single request argument
combining the session and params. This slightly simplifies the signature
for handlers, since there is no longer an often-ignored session
argument.

But more importantly, it opens the door to adding more information in
requests, such as auth info and HTTP request headers.

For #243.
2025-08-12 17:49:50 -04:00
Sam Thanawalla
e9e0da8dac
jsonschema: remove jsonschema code and depend on google/jsonschema-go (#262)
This CL prunes the jsonschema directory and updates the go.mod.

For #28
2025-08-07 15:30:06 -04:00
Jim Clark
cb17593a5d
update Subscribe/Unsubscribe handlers in ServerOpts (#231)
## Background

Since the Server has a map of ServersSessions->subscriptions, and takes
care of routing ResourceUpdate messages to ServerSessions, I think the
decision was made to leave *ServerSession out of the
SubscribeHandler/UnsubscribeHandler signatures. However, resource
subscriptions are not specific to the a particular client and this
information is kept private in the Session today.

## Proposal

Align the Subscribe/Unsubscribe handlers with the other two handlers
that are client specific (ProgressNotificationHandler, and
RootListChangeHanlder), and include *ServerSession in the signature.

It comes in practice because because a gateway server that needs to
forward subscriptions still needs this information. The routing logic in
Server is convenient and means that most servers won't need to know
which ServerSessions are subscribed. But I think there are still use
cases where the user will need to know.
2025-08-04 14:46:49 -04:00
Sam Thanawalla
faaf77dc05
mcp/server: advertise completions only if installed (#213)
Previously, completions would always be advertised as a capability even
if the CompletionHandler was not installed by the server. This CL fixes
that.
2025-08-04 10:12:01 -04:00
Sam Thanawalla
2b6f7b5185
mcp/server: add initial capability server option (#182)
This CL adds an option for servers to advertise support for features
that have not been added yet. This includes Prompts, Tools, and
Resources as these could be dynamically added after initialization.

Fixes: #135.
2025-07-29 05:20:08 -04:00
Jonathan Amsterdam
8dd9a819bb
mcp: panic if AddTool method is given a nil InputSchema (#157)
The spec requires an input schema for every tool.
2025-07-23 16:02:00 -04:00
Sam Thanawalla
bcbb31f072
mcp: add resource subscriptions (#138)
This CL adds the ability for clients to subscribe and receive updates
for resources as described in
https://modelcontextprotocol.io/specification/2025-06-18/server/resources#subscriptions

Fixes: #23
2025-07-23 15:23:50 -04:00
Jonathan Amsterdam
6c6243c0b0
mcp: NewClient and NewServer take Implementation (#113)
Change the name and version arguments to NewClient and NewServer to a
`*Implementation`, to future-proof against the spec.

Fixes #109.
2025-07-10 16:57:38 -04:00
Jonathan Amsterdam
b4febf129b
mcp: advertise a capability if and only if added (#93)
If tools are added to a Server when Run is called, it will send
toolCapabilities to the client. Otherwise it won't. Ditto for prompts
and resources.

For #56.
2025-07-10 15:52:11 -04:00
Sam Thanawalla
30af200d5e internal/mcp: change paginateList to a generic helper
This CL simplifies the paginateList function in server.go to use a
generic helper for tools, resources, and prompts.

Change-Id: Ide0d2a90d715374280067e094d8870882e6bddfa
Reviewed-on: https://go-review.googlesource.com/c/tools/+/678055
Auto-Submit: Sam Thanawalla <samthanawalla@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2025-06-05 07:47:33 -07:00
Sam Thanawalla
bb2347385e internal/mcp: add iterator methods resources and prompts
This CL streamlines the client side pagination logic by adding a generic
helper that handles pagination. This also simplifies the existing tools
iterator method.

Change-Id: If4304deda1ccd22d0c4580d76deaefc64e5dfeb9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/676975
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Robert Findley <rfindley@google.com>
Auto-Submit: Sam Thanawalla <samthanawalla@google.com>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
2025-06-02 07:39:08 -07:00
Sam Thanawalla
dbbdf5a181 internal/mcp: add pagination for resources
Change-Id: I9f257fa09fe82e53087616859d1ad0c03f57dab6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/675696
Reviewed-by: Jonathan Amsterdam <jba@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Robert Findley <rfindley@google.com>
2025-05-27 12:29:32 -07:00