# opencatalog.sh > The map from paid software to serious FOSS alternatives. Schema version 0.1.0. opencatalog.sh maps paid software to FOSS alternatives. 4 paid products, 6 FOSS alternatives, 3 categories, 4 licenses. Every claim is grounded with a citeable source. ## Agent entry points - https://www.opencatalog.sh/agents.md — full agent guide (endpoints, schema, trust model, submission flow) - https://www.opencatalog.sh/skills.md — same content organized as agent skills/capabilities - https://www.opencatalog.sh/api.json — complete catalog as JSON (17 records) - https://www.opencatalog.sh/api.schema.json — JSON Schema (draft 2020-12) for validation ## Per-record JSON - GET /api/paid/{slug} — individual paid product - GET /api/alt/{slug} — individual FOSS alternative - GET /api/category/{slug} — individual category - GET /api/license/{slug} — individual license ## Submission - POST /api/submit — submit a new candidate entry (no auth, rate-limited)