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internal/mcp: simplify prompt API

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Remove NewServerPrompt.

Schema inference is irrelevant for prompts.
All arguments are strings.
So using a struct is not as valuable as with tools.
The only advantage is catching misspellings at compile time.
It's not worth it.

Change-Id: I45aaa5d55c8940cc9e32dc277bd543f79d932519
Reviewed-on: https://go-review.googlesource.com/c/tools/+/682797
Reviewed-by: Robert Findley <rfindley@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This commit is contained in:
Jonathan Amsterdam 2025-06-19 02:40:37 -04:00 • committed by Robert Findley
commit a6ec3f5f4e
1 changed files with 37 additions and 177 deletions
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23
mcp/mcp_test.go
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@ -441,18 +441,27 @@ var (
}
prompts = map[string]*ServerPrompt{
"code_review": NewServerPrompt("code_review", "do a code review",
func(_ context.Context, _ *ServerSession, params struct{ Code string }, _ *GetPromptParams) (*GetPromptResult, error) {
"code_review": {
Prompt: &Prompt{
Name: "code_review",
Description: "do a code review",
Arguments: []*PromptArgument{{Name: "Code", Required: true}},
},
Handler: func(_ context.Context, _ *ServerSession, params *GetPromptParams) (*GetPromptResult, error) {
return &GetPromptResult{
Description: "Code review prompt",
Messages: []*PromptMessage{
{Role: "user", Content: NewTextContent("Please review the following code: " + params.Code)},
{Role: "user", Content: NewTextContent("Please review the following code: " + params.Arguments["Code"])},
},
}, nil
}),
"fail": NewServerPrompt("fail", "", func(_ context.Context, _ *ServerSession, args struct{}, _ *GetPromptParams) (*GetPromptResult, error) {
return nil, errTestFailure
}),
},
},
"fail": {
Prompt: &Prompt{Name: "fail"},
Handler: func(_ context.Context, _ *ServerSession, _ *GetPromptParams) (*GetPromptResult, error) {
return nil, errTestFailure
},
},
}
resource1 = &Resource{