{"id":"antoinebou12-uml-mcp","name":"uml-mcp","homepage":"https://umlmcp.vercel.app","repo_url":"https://github.com/antoinebou12/uml-mcp","category":"devtools","subcategories":[],"tags":["mcp","uml","diagram-generation","plantuml","kroki","mermaid","fastapi","python"],"what_it_does":"A Python MCP server that generates diagrams (UML via PlantUML and others via Kroki/related renderers) from natural language and/or provided diagram code, exposing tools and resources through MCP and an HTTP endpoint (including a FastAPI app with `/mcp` for hosted use).","use_cases":["Generate UML diagrams (class/sequence/activity/use-case/state/component/deployment/object) from descriptions or templates","Produce non-UML diagrams via Kroki-compatible backends (Mermaid, D2, Graphviz, TikZ, ERD, BlockDiag, BPMN, C4)","Use with AI desktop clients that support MCP (e.g., Cursor, Claude Desktop) to request diagram artifacts (URL/base64/SVG/PNG/PDF/etc.)","Convert or render PlantUML/Mermaid-like code into shareable image outputs for documentation"],"not_for":["High-assurance/regulated environments needing strict data governance guarantees","Use cases requiring complex authentication, tenant isolation, or enterprise audit features (not evidenced)","Latency-sensitive workloads if relying on external rendering services (Kroki/PlantUML server/Mermaid.ink) without dedicated infrastructure"],"best_when":"You want an MCP-compatible diagram-generation workflow where an agent can call `generate_uml` / `generate_diagram_url` and receive render outputs with fallback across multiple rendering backends.","avoid_when":"You need strong, documented security controls for public deployments (auth, rate limiting, data retention) or you cannot rely on third-party rendering endpoints.","alternatives":["Kroki (direct integration)","PlantUML server (direct integration)","Mermaid/mermaid-cli + rendering service alternatives","Other MCP servers for document/code generation (e.g., tool-specific diagram servers)"],"af_score":55.2,"security_score":39.8,"reliability_score":40.0,"package_type":"mcp_server","discovery_source":["github"],"priority":"high","status":"evaluated","version_evaluated":null,"last_evaluated":"2026-03-30T13:50:57.699207+00:00","interface":{"has_rest_api":true,"has_graphql":false,"has_grpc":false,"has_mcp_server":true,"mcp_server_url":"https://umlmcp.vercel.app/mcp","has_sdk":false,"sdk_languages":[],"openapi_spec_url":null,"webhooks":false},"auth":{"methods":[],"oauth":false,"scopes":false,"notes":"No authentication mechanisms are described in the provided README. The hosted MCP endpoint is mentioned as publicly reachable, which may imply either no auth or auth handled externally by the hosting/MCP client."},"pricing":{"model":null,"free_tier_exists":false,"free_tier_limits":null,"paid_tiers":[],"requires_credit_card":false,"estimated_workload_costs":null,"notes":"Pricing is not described for this package itself; rendering may depend on external services (e.g., Kroki/PlantUML/Mermaid.ink) which could introduce usage-based costs depending on deployment."},"requirements":{"requires_signup":false,"requires_credit_card":false,"domain_verification":false,"data_residency":[],"compliance":[],"min_contract":null},"agent_readiness":{"af_score":55.2,"security_score":39.8,"reliability_score":40.0,"mcp_server_quality":78.0,"documentation_accuracy":72.0,"error_message_quality":0.0,"error_message_notes":null,"auth_complexity":25.0,"rate_limit_clarity":10.0,"tls_enforcement":55.0,"auth_strength":20.0,"scope_granularity":10.0,"dependency_hygiene":65.0,"secret_handling":60.0,"security_notes":"Security controls (auth, authorization, rate limiting, logging redaction) are not documented in the provided content. The service relies on external renderers (Kroki/PlantUML/Mermaid.ink), which increases exposure to upstream availability and potential data disclosure depending on deployment. TLS is likely available on hosted endpoints (Vercel), but enforcement for self-hosted HTTP is not clearly stated.","uptime_documented":10.0,"version_stability":45.0,"breaking_changes_history":30.0,"error_recovery":75.0,"idempotency_support":"false","idempotency_notes":null,"pagination_style":"none","retry_guidance_documented":false,"known_agent_gotchas":["Rendering backends are external/variable (Kroki first with fallback). Agents should expect occasional failures or slow responses due to upstream services.","Some operations may write to disk when `output_dir` is provided; use `generate_diagram_url` to avoid file writes in environments where disk access is restricted.","Output format/behavior can vary by diagram type and backend support (e.g., which formats are available)."]}}