---
title: "Delete a collection"
method: DELETE
path: "/api/v1/collections/{collectionH}"
tags: ["Collections"]
---

# Delete a collection

`DELETE /api/v1/collections/{collectionH}`

## Request

- Base URL: `https://numonic.ai`
- URL: `https://numonic.ai/api/v1/collections/{collectionH}`
- Auth: API key in header `x-api-key`

Delete a collection. Use cascade=true to also delete descendant collections.

## Path parameters

- `collectionH` string, required: Collection hash (40-char hex SHA-1)

## Query parameters

- `cascade` string

## Response `200`

Collection deleted

- SuccessMessage
  - `message` string, required: Human-readable success message

## Other responses

- `404`: Collection not found

---

[API](https://skmtc.dev/numonic/apis/numonic-api.md) · [All operations](https://skmtc.dev/numonic/apis/numonic-api/llms.txt) · [OpenAPI document](https://skmtc.dev/numonic/apis/numonic-api/revisions/6c559bef1e35?raw)