---
title: "Delete a stack (ungroup its frames)"
method: DELETE
path: "/api/stacks/{stack_id}"
tags: ["stacks"]
---

# Delete a stack (ungroup its frames)

`DELETE /api/stacks/{stack_id}`

Dissolves the stack: the grouping is removed and every member frame returns to loose, individual display. The photos themselves are untouched — nothing is trashed or deleted from the library; like `remove_assets_from_album`, this only removes an organizational grouping. Use `trash_assets` to soft-delete the underlying assets. If a concurrent mutation adds a frame mid-delete, returns 409 and nothing is changed; retry the request.

## Path parameters

- `stack_id` string, required — Stack ID (with `asset_stack_` prefix) of the stack to dissolve.

## Response `200`

Successful Response

- DeletionResponse — Acknowledgment body returned by destructive endpoints (delete / trash / restore / permanently delete / remove-from-album / empty-trash). Carries no fields — the HTTP 200 + empty JSON object is itself the success signal. Exists so MCP tools generated from these endpoints have a real ``outputSchema`` (rather than the null schema FastMCP emits for 204 responses), which ChatGPT's MCP submission tooling requires.

## Other responses

- `401` — Missing, invalid, or expired credentials.
- `403` — The credentials are valid but not authorized for this operation — for example an API key whose action or library scope excludes it, or a credential type this operation does not accept.
- `404` — Not found
- `409` — A concurrent stack change invalidated the request
- `422` — Validation Error
- `429` — Rate limit exceeded. Retry after the interval in the `Retry-After` header.

---

[API](https://skmtc.net/gumnut-ai/apis/gumnut-api.md) · [All operations](https://skmtc.net/gumnut-ai/apis/gumnut-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/gumnut-ai/gumnut-api/versions/e71db45f5d4a/schema)