ArchPatterns MCP server v8.9.59 — stateless Streamable HTTP.
Access requires a free key: request one from the contact page at https://archpatterns.io/contact/ , subject
"MCP access" and one line on your use case, then connect this URL from any
MCP-capable client sending Authorization: Bearer <key>. Tools: list_questions,
recommend_architecture, lookup_pattern, search_patterns, compare_patterns,
get_version. Docs: https://archpatterns.io/api/  Terms: free with attribution;
bulk extraction and AI-training use reserved. https://archpatterns.io/terms/

Deployed library version: v8.9.59
Rate limiting: configured (300 full entries/day per client, plus a 60/min burst guard). Fails open if the key-value write quota is exhausted.
Access key: required