Commit graph go-sdk/mcp/resource.go
Author SHA1 Message Date
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
cryo
fbff31af14
mcp/Resource: Refactor URI Template Matching with uritemplate Library (#100)
1. Replaced the `uriTemplateToRegexp` function with the use of
[yosida95/uritemplate](https://github.com/yosida95/uritemplate) to
handle URI template matching as per the request.
2. Updated the relevant test cases to verify the new implementation and
fixed an invalid URI template (`"file:///{}/{a}/{b}"`) that doesn't
conform to RFC 6570 due to an empty `{}` expression.
3. Updated `go.mod` and `go.sum` to reflect the new dependency.

Fixes #11.
2025-07-08 15:52:54 -04:00
Jonathan Amsterdam
aebd244981
mcp: new API for features (#88)
BREAKING CHANGE

Change the API for adding tools, prompts, resources and resource
templates to a server.

The ServerXXX types are gone along with the plural Add methods
(AddTools, AddPrompts etc.)
Instead there are single Add methods (AddTool, AddPrompt).
In addition, instead of NewServerTool, there is AddTool[In, Out].

Fixes #73.
2025-07-07 14:54:52 -04:00
Jonathan Amsterdam
c1524fe934 internal/mcp: implement resource templates
Provide support for resource templates on the client and server.

Adding, removing and listing resource templates looks just like those
operations on resources.

Although the spec provides no guidance on the unique ID for resource
templates, we follow most existing SDKs, as well as the parallel with
resources, and index on the URI template rather than the name.

As the spec recommends, the server verifies an incoming URI in a
ReadResource request against its list of resources and resource
templates, to make sure the URI came from one of them. The main
technical challenge here is the need to check that a URI template could
have produced a particular URI.

I wrote a very simplified version of this check. At some point
we should switch to github.com/yosida95/uritemplate/v3.

Change-Id: I1e34dd01c8f2171123c68c045ad62f5e85c05e7c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/680158
Auto-Submit: 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>
2025-06-09 10:59:01 -07:00
Jonathan Amsterdam
d9a7859c3b internal/mcp/internal/util: add Wrapf
Add Wrapf, a function that helps with error wrapping.

Change-Id: I102695f75e4d217e09f828f4723cbfcbbe83f887
Reviewed-on: https://go-review.googlesource.com/c/tools/+/679177
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Sam Thanawalla <samthanawalla@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2025-06-09 08:52:39 -07:00
Jonathan Amsterdam
9bcc6c758f internal/mcp: sampling
Implement sampling (the CreateMessage method).

Change-Id: Ie44a671dd62831122b25cd7386b5bfcdece7ff60
Reviewed-on: https://go-review.googlesource.com/c/tools/+/673176
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Robert Findley <rfindley@google.com>
2025-05-19 11:15:58 -07:00
Jonathan Amsterdam
8361df724d internal/mcp: add the FileResourceHandler method
Provide secure reading of files on the local filesystem.

There are subtleties in path manipulation on Windows that I don't fully
understand, so I defer that work for now.

Change-Id: Ic11f4617dde4ac0b31ccd5b0a772bb2f56db026f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/673196
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Sam Thanawalla <samthanawalla@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2025-05-19 11:15:23 -07:00