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feat(mcp): Add meta parameters to CallTool #446

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feat(mcp): Add meta parameters to CallTool #446

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e6a7faa
feat(mcp): Add meta parameters to CallTool
Sep 9, 2025
a2c1c3e
feat(mcp): rename
Sep 9, 2025
232a2f1
feat(mcp): change type
Sep 9, 2025
4182a78
Merge branch 'main' into mcp-meta
cjpnice Sep 19, 2025
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4 changes: 3 additions & 1 deletion components/tool/mcp/examples/mcp.go
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Original file line number Diff line number Diff line change
Expand Up @@ -45,7 +45,9 @@ func main() {
}
fmt.Println("Name:", info.Name)
fmt.Println("Desc:", info.Desc)
result, err := mcpTool.(tool.InvokableTool).InvokableRun(ctx, `{"operation":"add", "x":1, "y":1}`)
result, err := mcpTool.(tool.InvokableTool).InvokableRun(ctx, `{"operation":"add", "x":1, "y":1}`, mcpp.WithMeta(&mcp.Meta{
AdditionalFields: map[string]any{"test": "test"},
}))
if err != nil {
log.Fatal(err)
}
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13 changes: 13 additions & 0 deletions components/tool/mcp/mcp.go
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Original file line number Diff line number Diff line change
Expand Up @@ -86,17 +86,29 @@ func GetTools(ctx context.Context, conf *Config) ([]tool.BaseTool, error) {
return ret, nil
}

type Options struct {
meta *mcp.Meta
}

func WithMeta(meta *mcp.Meta) tool.Option {
return tool.WrapImplSpecificOptFn(func(o *Options) {
o.meta = meta
})
}

type toolHelper struct {
cli client.MCPClient
info *schema.ToolInfo
toolCallResultHandler func(ctx context.Context, name string, result *mcp.CallToolResult) (*mcp.CallToolResult, error)
options Options
}

func (m *toolHelper) Info(ctx context.Context) (*schema.ToolInfo, error) {
return m.info, nil
}

func (m *toolHelper) InvokableRun(ctx context.Context, argumentsInJSON string, opts ...tool.Option) (string, error) {
options := tool.GetImplSpecificOptions(&m.options, opts...)
result, err := m.cli.CallTool(ctx, mcp.CallToolRequest{
Request: mcp.Request{
Method: "tools/call",
Expand All @@ -108,6 +120,7 @@ func (m *toolHelper) InvokableRun(ctx context.Context, argumentsInJSON string, o
}{
Name: m.info.Name,
Arguments: json.RawMessage(argumentsInJSON),
Meta: options.meta,
},
})
if err != nil {
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