{"id":"universal-tool-calling-protocol-code-mode","name":"code-mode","homepage":null,"repo_url":"https://github.com/universal-tool-calling-protocol/code-mode","category":"devtools","subcategories":[],"tags":["ai-agents","tool-calling","mcp","utcp","code-execution","sandboxing","typescript","python","sdk"],"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.","use_cases":["Agent tool orchestration via single code execution (multi-step workflows)","Dynamic tool discovery and interface introspection for adaptive agent behavior","Integrating MCP servers (and other tool sources) into agent workflows with TypeScript interfaces","Enterprise-safe code execution with timeouts and sandboxing","Generating TypeScript interface definitions for available tools"],"not_for":["Running untrusted arbitrary code without strong sandboxing guarantees/verification","Use-cases requiring strictly REST-style function-calling (no code execution step)","Environments needing fine-grained auditability of every individual tool call rather than aggregated execution logs"],"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.","alternatives":["Direct function/tool calling with explicit JSON schemas (framework-native tool calling)","LangChain/LlamaIndex tool agents with per-tool calls","MCP-only agent integrations (tool-by-tool invocation)","Workflow/orchestration layers (e.g., Temporal/Airflow) that execute deterministic steps"],"af_score":61.8,"security_score":48.8,"reliability_score":27.5,"package_type":"mcp_server","discovery_source":["github"],"priority":"high","status":"evaluated","version_evaluated":null,"last_evaluated":"2026-03-30T13:23:31.719727+00:00","interface":{"has_rest_api":false,"has_graphql":false,"has_grpc":false,"has_mcp_server":true,"mcp_server_url":null,"has_sdk":true,"sdk_languages":["TypeScript","Python (client/library referenced as MCP/UTCP tooling; repo metadata indicates Python)"],"openapi_spec_url":null,"webhooks":false},"auth":{"methods":["Registered tool credentials via UTCP/MCP/HTTP/CLI configuration (e.g., env vars passed to MCP server commands)"],"oauth":false,"scopes":false,"notes":"Auth is described indirectly via tool/server configuration (e.g., passing a personal access token via environment variables to a registered MCP server). No first-party auth mechanism (API keys/OAuth) is documented in the provided README content."},"pricing":{"model":null,"free_tier_exists":false,"free_tier_limits":null,"paid_tiers":[],"requires_credit_card":false,"estimated_workload_costs":null,"notes":"No pricing information is provided in the supplied content."},"requirements":{"requires_signup":false,"requires_credit_card":false,"domain_verification":false,"data_residency":[],"compliance":[],"min_contract":null},"agent_readiness":{"af_score":61.8,"security_score":48.8,"reliability_score":27.5,"mcp_server_quality":55.0,"documentation_accuracy":70.0,"error_message_quality":null,"error_message_notes":"The README highlights observability (captured console output, error handling, and logs), but does not provide explicit error code taxonomy or sample structured error payloads.","auth_complexity":55.0,"rate_limit_clarity":20.0,"tls_enforcement":70.0,"auth_strength":45.0,"scope_granularity":20.0,"dependency_hygiene":50.0,"secret_handling":60.0,"security_notes":"README claims secure VM sandboxing, no filesystem access, and 'zero network access' from the VM, plus timeout protection and console capture. However, the provided content does not clearly document secret logging practices inside the client/VM, the exact sandbox/network enforcement guarantees, or fine-grained permission/scopes for registered tools.","uptime_documented":0.0,"version_stability":35.0,"breaking_changes_history":20.0,"error_recovery":55.0,"idempotency_support":"false","idempotency_notes":null,"pagination_style":"none","retry_guidance_documented":false,"known_agent_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."]}}