feat: add JSON-RPC MCP Call with ToolError

client/client.go

@@ -0,0 +1,23 @@
+package client
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+)
+
+// Client is a Robinhood Agentic MCP client.
+type Client struct {
+	URL, Token, Name, Version string
+	HTTP                      *http.Client
+	Hook                      Caller
+	session                   any
+}
+
+// Call invokes an MCP tool by name and returns its JSON result.
+func (c *Client) Call(ctx context.Context, name string, args map[string]any) (json.RawMessage, error) {
+	if c.Hook != nil {
+		return c.Hook.Call(ctx, name, args)
+	}
+	return c.rpcCall(ctx, name, args)
+}