# Limitless

> Limitless builds the Pendant, a wearable AI device that captures and transcribes the
> conversations you have, plus the Limitless app and Ask AI for searching that history.
> The Limitless Developer API gives users programmatic access to their own lifelogs
> (Pendant recordings, transcripts, and structured contents), their Ask AI chats, and
> raw audio export. Limitless was acquired by Meta; Pendant sales ended 2025-12-05 and
> support is committed throughout 2026.

Generated by the API Evangelist enrichment pipeline on 2026-07-19.
Method: generated (limitless.ai publishes no /llms.txt).

## APIs

- [Limitless Developer API](https://www.limitless.ai/developers): REST API over lifelogs, chats, and audio download. Base URL https://api.limitless.ai, version v1, authenticated with an `X-API-Key` header.

## Specs

- [OpenAPI (Swagger 2.0)](https://www.limitless.ai/openapi.yml): The published specification, 8 operations. Harvested to `openapi/limitless-developer-openapi-original.yml`.
- [OpenAPI Overlay](overlays/limitless-developer-overlay.yaml): API Evangelist enhancements — the missing `X-API-Key` security definition, tags, pagination and rate-limit annotations.

## Operations

- `getLifelogs` — GET /v1/lifelogs — list and hybrid-search lifelogs; cursor paginated, max 100 per page.
- `getLifelog` — GET /v1/lifelogs/{id} — fetch a single lifelog.
- `deleteLifelog` — DELETE /v1/lifelogs/{id} — permanently delete a lifelog.
- `getChats` — GET /v1/chats — list Ask AI conversations.
- `getChat` — GET /v1/chats/{id} — fetch a chat with its messages, tool calls, and tool results.
- `deleteChat` — DELETE /v1/chats/{id} — delete a chat.
- `downloadAudio` — GET /v1/download-audio — download Ogg Opus audio for a time range, max 2 hours per request.

## Agent access

- [MCP server](https://api.limitless.ai/mcp): Official hosted MCP server, HTTP transport, MCP protocol 2025-06-18, OAuth 2.0 + PKCE. Manifest at `mcp/limitless-mcp.yml`.
- [OAuth authorization server metadata](https://api.limitless.ai/.well-known/oauth-authorization-server): RFC 8414. Scopes: `openid`, `profile`, `email`, `lifelogs:read`.
- [OpenID Connect discovery](https://api.limitless.ai/.well-known/openid-configuration): issuer `https://api.limitless.ai`.
- [Protected resource metadata](https://api.limitless.ai/.well-known/oauth-protected-resource): RFC 9728.
- [Agent Skills](skills/_index.yml): packaged operating instructions for the marquee flows.

## Conventions

- Auth: `X-API-Key` header on every REST request; OAuth 2.0 authorization_code + PKCE for the MCP surface.
- Pagination: cursor-based (`cursor`, `limit` max 100, `direction`), next page at `meta.<resource>.nextCursor`. Cursors do not work alongside `search`.
- Time: modified ISO-8601 (`YYYY-MM-DD` or `YYYY-MM-DD HH:mm:SS`); embedded offsets are ignored, the `timezone` IANA parameter is authoritative.
- Response envelope: `{ "data": { ... }, "meta": { ... } }`.
- Errors: ad-hoc JSON, not RFC 9457. 429 returns `{ error, retryAfter }`.
- Rate limit: 180 requests per minute per API key.
- Idempotency: not supported and not needed — every operation is GET or DELETE.

## Docs

- [Developers](https://www.limitless.ai/developers): setup, endpoints, usage, rate limiting.
- [Example repository](https://github.com/limitless-ai-inc/limitless-api-examples): first-party Python and TypeScript examples plus notebooks. There are no published SDK packages.
- [Help Center](https://help.limitless.ai/)
- [Support](https://www.limitless.ai/support)
- [Web app / API key creation](https://app.limitless.ai): Developer settings → Create API Key.

## Company

- [Home and Meta acquisition notice](https://www.limitless.ai/)
- [About](https://www.limitless.ai/about)
- [Careers](https://www.limitless.ai/careers)
- [Terms of Service](https://www.limitless.ai/terms)
- [Privacy Policy](https://www.limitless.ai/privacy-policy)
- [Privacy overview](https://www.limitless.ai/privacy)