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mcp: new API for features (#88)

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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.
This commit is contained in:
Jonathan Amsterdam 2025-07-07 14:54:52 -04:00 • committed by GitHub
commit aebd244981
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1 changed files with 366 additions and 612 deletions
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11
mcp/shared_test.go
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@ -12,7 +12,7 @@ import (
)
// TODO(jba): this shouldn't be in this file, but tool_test.go doesn't have access to unexported symbols.
func TestNewServerToolValidate(t *testing.T) {
func TestToolValidate(t *testing.T) {
// Check that the tool returned from NewServerTool properly validates its input schema.
type req struct {
@ -26,9 +26,10 @@ func TestNewServerToolValidate(t *testing.T) {
return nil, nil
}
tool := NewServerTool("test", "test", dummyHandler)
// Need to add the tool to a server to get resolved schemas.
// s := NewServer("", "", nil)
st, err := newServerTool(&Tool{Name: "test", Description: "test"}, dummyHandler)
if err != nil {
t.Fatal(err)
}
for _, tt := range []struct {
desc string
@ -71,7 +72,7 @@ func TestNewServerToolValidate(t *testing.T) {
if err != nil {
t.Fatal(err)
}
_, err = tool.rawHandler(context.Background(), nil,
_, err = st.handler(context.Background(), nil,
&CallToolParamsFor[json.RawMessage]{Arguments: json.RawMessage(raw)})
if err == nil && tt.want != "" {
t.Error("got success, wanted failure")