> ## Documentation Index > Fetch the complete documentation index at: https://offergrid.io/docs/llms.txt > Use this file to discover all available pages before exploring further. # API Documentation > Complete API reference and integration guides for engineering teams Everything engineering teams need to integrate Offergrid. Start with the quickstart, then work from the reference for your role. **Base URL** `https://api.offergrid.io` · **Auth** `x-api-key: YOUR_TEAM_API_KEY` · **Version** 1 **OpenAPI 3.x specs** — [Provider](/docs/openapi/openapi-provider.json) · [Reseller](/docs/openapi/openapi-reseller.json) · [Public](/docs/openapi/openapi-public.json) · [Full](/docs/openapi/openapi.json) **For agents** — [agents.md briefing](/docs/agents) · [llms.txt index](https://offergrid.io/docs/llms.txt) · [llms-full.txt](https://offergrid.io/docs/llms-full.txt) · append `.md` to any docs URL for raw markdown ## Getting Started Your first authenticated call, start to finish Base URL, roles, specs, and where to go next Issuing, rotating, and revoking keys; role behaviour; auth errors One page with everything needed to generate a correct integration ## Shared behaviour The rules every endpoint follows. Reading these first is the difference between a one-hour integration and a one-day one. List responses, identifiers, timestamps, money, and idempotency Every status code, what causes it, and a retry-safe client What is limited today, and what to build for What we promise not to break, and a dated record of what changed ## Provider API Every provider endpoint — offers, orders, markets, webhooks, brands Step-by-step guide to integrating as a service provider Signed, real-time order events — payloads, verification, and delivery behaviour Expose one endpoint for address-level availability and live pricing ## Reseller API Every reseller endpoint — catalog, availability, orders, links, customers Step-by-step guide to integrating as a reseller partner Signed, real-time events for the orders your team placed Find every offer sellable at a specific service address ## Public API Unauthenticated endpoints for shareable links and the consumer storefront ## Common Integration Tasks Create and publish service offers via API Search and filter available offers using the API Order webhooks and order data structure Submit orders programmatically via the API ## Resources Complete provider documentation and guides Complete reseller documentation and guides This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.