# OnlyData Club > Your data. Only yours. OnlyData Club is a first-party professional identity platform. People and companies own their context locally and publish public profiles. ## Profile Format (JSON) Person: slug, name, headline, about, location, roles[], projects[], skills[], companies[] Company: slug, name, headline, about, website, b2b_b2c, industry, team[], products[], services[] ## API GET /api/profile/:slug — returns profile JSON GET /api/profiles — lists all public profiles POST /api/claim — create a new profile GET /api/verify-domain/instructions/:slug — domain verification instructions (3 methods) POST /api/verify-domain/:slug — attempt domain verification (dns, file, or meta) GET /api/agent-readiness — agent readiness scores for all profiles GET /api/agent-readiness/:slug — agent readiness for one profile ## Machine-Readable Resources - OpenAPI spec: onlydata.club/openapi.json - MCP manifest: onlydata.club/mcp.json - AI plugin: onlydata.club/.well-known/ai-plugin.json - Product feed: onlydata.club/products.json - Sitemap: onlydata.club/sitemap.xml ## URLs Profile pages: onlydata.club/:slug Join: onlydata.club/join API Docs: onlydata.club/docs