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mcp: introduce Requests (#267)

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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.
This commit is contained in:
Jonathan Amsterdam 2025-08-12 17:49:50 -04:00 • committed by GitHub
commit 6e03217c83
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1 changed files with 517 additions and 380 deletions
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README.md
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@ -115,9 +115,9 @@ type HiParams struct {
Name string `json:"name" jsonschema:"the name of the person to greet"`
}
func SayHi(ctx context.Context, cc *mcp.ServerSession, params *mcp.CallToolParamsFor[HiParams]) (*mcp.CallToolResultFor[any], error) {
func SayHi(ctx context.Context, req *mcp.ServerRequest[*mcp.CallToolParamsFor[HiParams]]) (*mcp.CallToolResultFor[any], error) {
return &mcp.CallToolResultFor[any]{
Content: []mcp.Content{&mcp.TextContent{Text: "Hi " + params.Arguments.Name}},
Content: []mcp.Content{&mcp.TextContent{Text: "Hi " + req.Params.Arguments.Name}},
}, nil
}