{"id":"universal-tool-calling-protocol-python-utcp","name":"python-utcp","af_score":50.8,"security_score":52.0,"reliability_score":25.0,"what_it_does":"python-utcp provides a modular Python implementation of the Universal Tool Calling Protocol (UTCP), centered on a core client library (UtcpClient) plus pluggable protocol “call templates” (e.g., HTTP, CLI, MCP, file/text, websocket). It supports defining a tool “manual” (discovery) and calling tools via configured call templates using typed (Pydantic) models.","best_when":"You want a Python-native, plugin-based way for agents to discover and call tools across multiple transport styles (especially HTTP/SSE/streaming and MCP) with structured data models.","avoid_when":"You need a single, standardized public API surface with OpenAPI/Swagger for this specific package itself (the standard interface is the client/library + plugins, not a packaged SaaS with documented endpoints).","last_evaluated":"2026-03-30T13:26:17.767510+00:00","has_mcp":false,"has_api":false,"auth_methods":["Plugin-dependent auth for HTTP call templates (auth object in call template configuration, per README snippet)","No explicit global auth method described for the core client in the provided README excerpt"],"has_free_tier":false,"known_gotchas":["Tool naming is namespaced as manual_name.tool_name (client handles it, but agents/integrations must use correct tool identifiers).","Breaking changes from 0.x to 1.0.0 (e.g., provider->call_template, streamable_http->streamable_http renamed to streamable_http?; terminology changes).","Variable substitution namespacing behavior (manual__<name>_VAR) can affect expected payload shapes if downstream tools rely on exact key names."],"error_quality":0.0}