---
title: "Read the session's scratch composition"
method: GET
path: "/v1/projects/{id}/compose-session/{sessionId}/composition"
tags: ["compose-session"]
---

# Read the session's scratch composition

`GET /v1/projects/{id}/compose-session/{sessionId}/composition`

## Request

- Base URL: `https://api.cueframe.ai`
- URL: `https://api.cueframe.ai/v1/projects/{id}/compose-session/{sessionId}/composition`
- Auth: one of:
  - HTTP bearer
  - OAuth 2 (authorization code, authorization URL `https://api.cueframe.ai/api/auth/mcp/authorize`, token URL `https://api.cueframe.ai/api/auth/mcp/token`, scopes: `projects:read`)
  - API key in header `PAYMENT-SIGNATURE`

Pure read: returns the composition currently held in the session's SCRATCH (what the author LLM has been editing over this session), NOT the project's active composition. The Director ensemble reads this back per candidate and returns it as the authored composition — the winner is saved downstream, so a candidate never commits its scratch to active. 404 when the session is unknown/foreign or has never written a scratch.

## Path parameters

- `id` string, required
- `sessionId` string, required

## Response `200`

Scratch composition.

- object
  - `composition` unknown, required

## Other responses

- `401`: Missing or invalid Authorization header.
- `402`: Payment required. Returned when the caller presents no API key on a priced operation: the body AND the `Payment-Required` header carry the x402 v2 challenge (accepted scheme, network, USDC asset, amount, payTo). Sign the EIP-3009 authorization and retry with a `PAYMENT-SIGNATURE` header. A KEYED caller sees this status instead when their plan lacks or has exhausted the feature (`billing_required`).
- `403`: Forbidden — permission insufficient.
- `404`: Resource not found.
- `500`: Internal error.

---

[API](https://skmtc.dev/cueframe/apis/cueframe-api.md) · [All operations](https://skmtc.dev/cueframe/apis/cueframe-api/llms.txt) · [OpenAPI document](https://skmtc.dev/cueframe/apis/cueframe-api/revisions/8f9bfe362b4a?raw)