Ranked by AI agent readiness across MCP, API, CLI, Skills, and Docs.
Code hosting with official MCP server (28K stars), REST + GraphQL APIs, gh CLI, and 6-layer agent customization system
AI sandbox platform with official MCP server (JS + Python), REST API with OpenAPI spec, CLI with --format json + non-interactive auth, CLAUDE.md, and llms.txt + llms-full.txt + AI quickstart