> ## Documentation Index
> Fetch the complete documentation index at: https://doc.featherhq.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Delete one stored memory fact for a user

> Delete a single fact, scoped to (org, user, fact id).

Supported by the in-house memory vendor; vendors without locally
addressable fact rows answer 400 (``UNSUPPORTED_OPERATION``). A missing or
cross-scope fact id answers 404 — no existence leak.



## OpenAPI

````yaml /api-reference/openapi.json delete /v1/memory/users/{end_user_id}/facts/{fact_id}
openapi: 3.1.0
info:
  title: Feather API
  description: >-
    Unified customer experience platform API. Manages identity, conversations,
    memory, agents, procedures, policies, model routing, knowledge bases,
    integrations, and runtime execution.
  version: 1.87.0
servers:
  - url: https://api-sandbox.featherhq.com
    description: Sandbox
  - url: http://localhost:8000
    description: Local dev
security: []
paths:
  /v1/memory/users/{end_user_id}/facts/{fact_id}:
    delete:
      tags:
        - memory
      summary: Delete one stored memory fact for a user
      description: >-
        Delete a single fact, scoped to (org, user, fact id).


        Supported by the in-house memory vendor; vendors without locally

        addressable fact rows answer 400 (``UNSUPPORTED_OPERATION``). A missing
        or

        cross-scope fact id answers 404 — no existence leak.
      operationId: deleteUserMemoryFact
      parameters:
        - name: end_user_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
            title: End User Id
        - name: fact_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
            title: Fact Id
      responses:
        '204':
          description: Successful Response
        '400':
          description: The memory backend does not support per-fact delete
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '401':
          description: Authentication required
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '404':
          description: Memory fact not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
        '503':
          description: Memory vendor temporarily unavailable
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
      security:
        - APIKeyHeader: []
components:
  schemas:
    ErrorResponse:
      properties:
        error:
          type: string
          title: Error
        message:
          type: string
          title: Message
        retryable:
          anyOf:
            - type: boolean
            - type: 'null'
          title: Retryable
        retry_after:
          anyOf:
            - type: integer
            - type: 'null'
          title: Retry After
      type: object
      required:
        - error
        - message
      title: ErrorResponse
      description: Standard error response returned by all API error handlers.
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
              - type: string
              - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
        input:
          title: Input
        ctx:
          type: object
          title: Context
      type: object
      required:
        - loc
        - msg
        - type
      title: ValidationError
  securitySchemes:
    APIKeyHeader:
      type: apiKey
      in: header
      name: x-api-key

````