---
title: "Changes to Exchange a headless turn's resume grant for a fresh MCP token"
method: POST
path: "/v1/headless/resume-token"
---

# Changes to Exchange a headless turn's resume grant for a fresh MCP token

`POST /v1/headless/resume-token`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 2 of 86 revisions.

- **2026-10-19** `f1d119370a1a`: 5 warning, 1 info
- **2026-10-19** `21280947fa04`: 1 info

## Changes

- **2026-10-19** `f1d119370a1a`: 5 warning, 1 info
  - added the new `model_unavailable` enum value to the `error` response property for the response status `400`
  - added the new `model_unavailable` enum value to the `error` response property for the response status `401`
  - added the new `model_unavailable` enum value to the `error` response property for the response status `403`
  - added the new `model_unavailable` enum value to the `error` response property for the response status `404`
  - added the new `model_unavailable` enum value to the `error` response property for the response status `500`
  - added the optional property `modelAccess` to the response with the `200` status
- **2026-10-19** `21280947fa04`: 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/openworklabs/apis/den-api/docs/v1/headless/resume-token/post.md) · [API](https://skmtc.dev/openworklabs/apis/den-api.md) · [Page](https://skmtc.dev/openworklabs/apis/den-api/changes/v1/headless/resume-token/post)