---
title: "Remove assets from a stack"
method: DELETE
path: "/api/stacks/{stack_id}/assets"
tags: ["stacks"]
---

# Remove assets from a stack

`DELETE /api/stacks/{stack_id}/assets`

Pulls one or more frames out of the stack. The assets themselves are untouched — they remain in the library (and in any albums) and simply appear as individual photos again. IDs that are not current members of the stack are silently ignored.

If a removed frame was the pinned cover, the pin is cleared with no automatic re-pick — clients choose their own display cover. A stack that survives the removal is marked user-owned (`origin = user`) so burst re-detection honors the edit; a removal that leaves fewer than 2 members dissolves the stack entirely, returning its remaining frames to loose display too. Trashed frames still count as members for that threshold (unlike `asset_count`, which excludes them), so a stack can survive with `asset_count` below 2.

Up to 200 ids per request; over-cap requests return 422.

## Path parameters

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

## Request body

- StackAssetRemoval
  - `asset_ids` string[], required — Asset IDs (with `asset_` prefix) to pull out of the stack. Get member IDs from `list_assets` with `stack_id`. Up to 200 ids per request.

## 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
- `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)