# EnvoAPI > API documentation for professional profile and company data. Start with getting started and authentication. Follow the API reference to choose an endpoint. Each endpoint links to its parameters, response schemas, examples, guides, and related operations. Fetch only the pages relevant to your task. ## Start here * [Getting started](https://docs.envoapi.com/index.md): Make your first request. ## Guides * [Authentication](https://docs.envoapi.com/guides/authentication.md): Authenticate Public v1 requests with an API Key and keep credentials in server-side environments. * [Errors](https://docs.envoapi.com/guides/errors.md): Handle Public v1 failures using the shared error envelope, stable codes, retryability, and request IDs. * [MCP](https://docs.envoapi.com/guides/mcp.md): Connect your AI assistant to EnvoAPI with OAuth or an API key to research people, companies, jobs, and posts. * [Pagination](https://docs.envoapi.com/guides/pagination.md): Get the next page using offset, start, or cursor. * [Rate limits](https://docs.envoapi.com/guides/rate-limits.md): Read account-wide limit headers and handle 429 responses with Retry-After, bounded backoff, and jitter. * [Websites](https://docs.envoapi.com/guides/websites.md): Fetch public page HTML or visible text and discover published website email addresses. ## API reference * [All endpoints](https://docs.envoapi.com/api/index.md): Browse operations by capability.