# EosHQ > Eos is a multi-tenant business operating platform. This index is for developers and coding agents building private organization integrations. ## Eos API v1 - Overview: https://eoshq.com/developers/api/v1/ - OpenAPI 3.1 JSON: https://eoshq.com/developers/api/v1/openapi.json - LLM integration guide: https://eoshq.com/developers/api/v1/llm-integration.html - Markdown documentation index: https://eoshq.com/developers/api/v1/markdown/index.md - Authentication: https://eoshq.com/developers/api/v1/markdown/authentication.md - Agents: https://eoshq.com/developers/api/v1/markdown/agents.md - Runs: https://eoshq.com/developers/api/v1/markdown/runs.md - Conversations: https://eoshq.com/developers/api/v1/markdown/conversations.md - API Playground: https://eoshq.com/developers/api/v1/playground.html ## Important constraints - API Clients are durable non-human organization principals authenticated with OAuth client credentials. - Authorization is fenced by the API Client's paid license and assigned Eos Roles. - Member IDs are normalized email addresses. - Optional member subjects add context but no Roles, record access, personal integrations, or identity. - CRM and custom objects are not part of API v1. Existing objects may expose custom fields.