---
title: "Create a session"
method: POST
path: "/v1/sessions"
tags: ["sessions"]
---

# Create a session

`POST /v1/sessions`

## Request

- Base URL: `https://api.cueframe.ai`
- URL: `https://api.cueframe.ai/v1/sessions`
- 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: `sessions:write`)
  - API key in header `PAYMENT-SIGNATURE`

Required permission: sessions:write

## Request body

- SessionCreateRequest: POST /sessions body.
  - `name` string, required
  - `files` object[], required
    - `mediaId` string, required
    - `role` string, required

## Response `201`

Session created.

- SessionResponse: Session response per §Sessions.
  - `id` string, required
  - `name` string, required
  - `files` SessionFileEntry[], required
    - `mediaId` string, required
    - `role` string, required
    - `status` string, nullable, required
  - `mux` object, required
    - `status` string, nullable, required
    - `jobId` string, nullable, required
    - `muxedItems` object, nullable, required
    - `error` string, nullable, required
    - `startedAt` string, nullable, required
    - `completedAt` string, nullable, required
  - `createdAt` string, required

## Other responses

- `400`: Bad request — validation_error / invalid_cursor / invalid_query.
- `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.
- `422`: Unprocessable — invalid_composition / media_in_use / session_in_use / render_not_cancellable.
- `429`: Rate limited. Retry-After header present.
- `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)