{"id":"universal-tool-calling-protocol-code-mode","name":"code-mode","af_score":61.8,"security_score":48.8,"reliability_score":27.5,"what_it_does":"Code-Mode provides a library/client that lets AI agents execute tool workflows by running TypeScript code in a sandboxed VM and invoking tools registered from UTCP/MCP/HTTP/File/CLI sources. It also offers dynamic tool discovery and auto-generated TypeScript interfaces for IDE/agent guidance.","best_when":"You want to reduce multi-tool iteration overhead by having the agent generate one coherent TypeScript program that calls registered tools, while relying on UTCP/MCP/HTTP/etc tool registrations.","avoid_when":"You cannot tightly control which tools are registered or you need strict separation between model reasoning and executable code execution semantics.","last_evaluated":"2026-03-30T13:23:31.719727+00:00","has_mcp":true,"has_api":false,"auth_methods":["Registered tool credentials via UTCP/MCP/HTTP/CLI configuration (e.g., env vars passed to MCP server commands)"],"has_free_tier":false,"known_gotchas":["Because the agent runs generated TypeScript code, ensure the sandbox and registered tools are appropriately constrained to prevent unsafe actions.","Tool calls occur inside code; failure modes may be harder to localize than per-tool JSON calls unless logs are carefully inspected.","Idempotency of tool operations depends on the underlying registered tools/APIs; Code-Mode itself does not document idempotency controls."],"error_quality":null}