---
title: "List derived surfaces and the live read pin"
method: GET
path: "/v1/projections"
tags: ["Projections"]
---

# List derived surfaces and the live read pin

`GET /v1/projections`

## Request

- Base URL: `https://brain.inite.ai`
- URL: `https://brain.inite.ai/v1/projections`
- Auth: HTTP bearer

Every derived world (facts@version, …) with its lifecycle status (building/built/live/residual/failed), watermark, builder identity and stats, plus the process-local read pin (RETRIEVAL_DERIVED_VERSION). A registry row promises a queryable world. 404 until PROJECTIONS_API_ENABLED=1. Source: src/admin/projections.controller.ts.

Required scope: `brain:read`.

## Response `200`

Derived worlds + read pin.

- ProjectionsListResponse
  - `projections` ProjectionRow[], required
    - `builder` string, required
    - `finishedAt` string
    - `id` string, required
    - `name` string, required
    - `startedAt` string, required
    - `stats` object
    - `status` 'building' | 'built' | 'live' | 'residual' | 'failed', required
    - `version` string, required
    - `watermark` string
  - `readPin` string, nullable, required

## Other responses

- `401`: Missing or unknown bearer key.
- `403`: The key lacks the required scope.
- `404`: No such resource in this tenant.

---

[API](https://skmtc.dev/inite/apis/inite-brain-platform-api.md) · [All operations](https://skmtc.dev/inite/apis/inite-brain-platform-api/llms.txt) · [OpenAPI document](https://skmtc.dev/inite/apis/inite-brain-platform-api/revisions/c7c3eb5e304b?raw)