> ## Documentation Index
> Fetch the complete documentation index at: https://docs.e6data.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Audit history

> audit history. GET /api/v1/audit. Uses the same payload, validation, revision checks and response as the unified HTTP API.

ReferenceApplies to: Unified engine deployments

## Related guidance

[Addresses and access](https://docs.e6data.com/transformation/http/access.md) · [Request identity](https://docs.e6data.com/transformation/http/request-identity.md) · [Errors and recovery](https://docs.e6data.com/transformation/http/errors.md) · [Pagination and results](https://docs.e6data.com/transformation/http/results.md)


## OpenAPI

````yaml openapi/transformation.json GET /api/v1/audit
openapi: 3.1.0
info:
  description: >-
    HTTP contracts for the Unified engine. Requests use the connected
    deployment's access model and configured owner. Response examples are
    illustrative; inspect your engine response in your client. SQL-managed
    secrets, credentials, streaming pipelines and maintenance run through
    session operations.
  title: Laminar Unified HTTP API
  version: v1
servers:
  - url: https://engine.example.com
    description: >-
      Example engine origin. Replace it with your deployment URL and any API
      mount prefix.
security: []
paths:
  /api/v1/audit:
    get:
      tags:
        - Observability
      summary: audit history
      description: >-
        audit history. GET /api/v1/audit. Uses the same payload, validation,
        revision checks and response as the unified HTTP API.
      operationId: audit_history
      parameters:
        - in: query
          name: action
          required: false
          schema:
            type: string
        - in: query
          name: actor
          required: false
          schema:
            type: string
        - in: query
          name: continuation_token
          required: false
          schema:
            type: string
        - in: query
          name: end_unix_millis
          required: false
          schema:
            minimum: 0
            type: integer
        - in: query
          name: limit
          required: false
          schema:
            description: >-
              Page size, bounded by the server. For query results this counts
              Arrow batches, default 1.
            minimum: 1
            type: integer
        - in: query
          name: outcome
          required: false
          schema:
            type: string
        - in: query
          name: q
          required: false
          schema:
            type: string
        - in: query
          name: start_unix_millis
          required: false
          schema:
            minimum: 0
            type: integer
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: >-
                  #/components/schemas/frontend_session_src_models_rs_AuditListResponse
          description: Successful response.
        default:
          content:
            application/json:
              example:
                error:
                  code: invalid_request
                  message: Check the request fields
              schema:
                $ref: '#/components/schemas/ApiError'
          description: A rejected or failed request. Inspect error.code before retrying.
components:
  schemas:
    frontend_session_src_models_rs_AuditListResponse:
      properties:
        continuation_token:
          anyOf:
            - type: string
            - type: 'null'
        events:
          items:
            $ref: '#/components/schemas/frontend_session_src_models_rs_AuditEvent'
          type: array
      required:
        - events
        - continuation_token
      type: object
    ApiError:
      properties:
        error:
          properties:
            code:
              type: string
            message:
              type: string
          required:
            - code
            - message
          type: object
      required:
        - error
      type: object
    frontend_session_src_models_rs_AuditEvent:
      properties:
        action:
          type: string
        actor:
          description: >-
            Serialized UserId; provider-specific fields retain their original
            JSON representation.
          x-rust-type: UserId
        actor_kind:
          type: string
        changed_fields:
          items:
            type: string
          type: array
        event_id:
          format: uuid
          type: string
        occurred_at:
          $ref: '#/components/schemas/shared_common_src_time_rs_WallClockTimestamp'
        outcome:
          type: string
        related_id:
          anyOf:
            - type: string
            - type: 'null'
        request_id:
          $ref: '#/components/schemas/shared_common_src_lib_rs_RequestId'
        resource:
          type: string
      required:
        - changed_fields
        - event_id
        - request_id
        - actor
        - actor_kind
        - action
        - resource
        - outcome
        - occurred_at
        - related_id
      type: object
    shared_common_src_time_rs_WallClockTimestamp:
      properties:
        unix_millis:
          type: integer
      required:
        - unix_millis
      type: object
    shared_common_src_lib_rs_RequestId:
      format: uuid
      type: string

````

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