---
title: "Delete One Document"
method: POST
path: "/action/deleteOne"
---

# Delete One Document

`POST /action/deleteOne`

Delete a single document that matches a query.

## Request body

- DeleteRequestBody
  - `dataSource` string, required — The name of a linked MongoDB Atlas data source. This is commonly `"mongodb-atlas"` though it may be different in your App if you chose a different name when you created the data source.
  - `database` string, required — The name of a database in the specified data source.
  - `collection` string, required — The name of a collection in the specified database.
  - `filter` object — A MongoDB query filter that matches documents. For a list of all query operators that the Data API supports, see [Query Operators](https://www.mongodb.com/docs/atlas/app-services/mongodb/crud-and-aggregation-apis/#query-operators).

## Response `200`

Deleted

- object
  - `deletedCount` number, required — The number of documents that were deleted.

## Other responses

- `400` — The request was malformed or incomplete.
- `401` — The authenticated user does not have permission to access this endpoint.

## Changes

- **2023-05-11** `5088bc79b2f0` — 2 breaking
  - the `allOf[subschema #1: DeleteResponseBody]/deletedCount` response's property type/format changed from `number, object`/`` to ``/`` for status `200` (media type: application/json)
  - the `allOf[subschema #1: DeleteResponseBody]/deletedCount` response's property type/format changed from `number, object`/`` to ``/`` for status `200` (media type: application/ejson)

[Change history](https://skmtc.dev/mongodb/apis/mongodb-atlas-data-api/changes/action/deleteOne/post.md)

---

[API](https://skmtc.dev/mongodb/apis/mongodb-atlas-data-api.md) · [All operations](https://skmtc.dev/mongodb/apis/mongodb-atlas-data-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/mongodb/mongodb-atlas-data-api/revisions/b4f471255cc6/schema)