> ## Documentation Index > Fetch the complete documentation index at: https://docs.sixtyfour.ai/llms.txt > Use this file to discover all available pages before exploring further. # Latest Recorded Change Per Row And Field > Return `{row_id: {field_name: latest_change_timestamp}}` (ISO 8601). Includes only actual change events for currently watched fields; establishment, quiet checks, retired fields and future timestamps are excluded. Rows/fields without recorded changes are omitted; an empty history returns `{}`. This is latest-change metadata, not a full audit log or a snapshot of current values. Requires the same authenticated org/team access as monitor detail (404 for inaccessible groups). Query failures return an error, never partial history. ## OpenAPI ````yaml https://api.sixtyfour.ai/openapi.json get /monitors/{monitor_id}/changes openapi: 3.1.0 info: title: Sixtyfour API description: >- Intelligence API for People and Entities. Deploy AI agents that investigate, resolve identities, map relationships, and surface risk signals contact: name: Sixtyfour url: https://sixtyfour.ai/ email: support@sixtyfour.ai license: name: Proprietary version: 1.0.0 servers: - url: https://api.sixtyfour.ai description: Production security: [] tags: - name: Enrichment description: Find and enrich emails, phones, and LinkedIn for people and companies. - name: org-chart description: Discover people inside a company and build org charts. - name: Search description: Run deep and filter searches over Sixtyfour's data. - name: Workflow description: Create, run, and manage enrichment workflows. - name: Workflow Schedules description: Create and manage recurring schedules for workflows. - name: Account description: Manage and inspect your account and credit balance. - name: Intelligence description: Verify identity attributes such as age using high-tier OSINT research. - name: Atlas description: >- Read your Atlas investigations: attribution graph, workspace files, reports, and exports. paths: /monitors/{monitor_id}/changes: get: tags: - Monitors summary: Latest Recorded Change Per Row And Field description: >- Return `{row_id: {field_name: latest_change_timestamp}}` (ISO 8601). Includes only actual change events for currently watched fields; establishment, quiet checks, retired fields and future timestamps are excluded. Rows/fields without recorded changes are omitted; an empty history returns `{}`. This is latest-change metadata, not a full audit log or a snapshot of current values. Requires the same authenticated org/team access as monitor detail (404 for inaccessible groups). Query failures return an error, never partial history. operationId: monitor_changes_endpoint_monitors__monitor_id__changes_get parameters: - name: monitor_id in: path required: true schema: type: string title: Monitor Id - name: x-api-key in: header required: false schema: anyOf: - type: string - type: 'null' title: X-Api-Key responses: '200': description: Successful Response content: application/json: schema: type: object additionalProperties: additionalProperties: type: string type: object title: >- Response Monitor Changes Endpoint Monitors Monitor Id Changes Get '400': description: Request was rejected by the route's validation rules. content: application/json: schema: type: object properties: detail: type: string example: detail: Invalid request body '401': description: Missing or invalid API key. content: application/json: schema: type: object properties: detail: type: string example: detail: Invalid API key '403': description: Organization access is locked. content: application/json: schema: type: object properties: detail: type: string example: detail: >- This organization no longer has access to Sixtyfour. Contact your representative at Sixtyfour. '422': description: Invalid request fields or monitor input. content: application/json: schema: $ref: '#/components/schemas/MonitorValidationErrorResponse' '500': description: Unexpected server error. Retry with backoff. content: application/json: schema: type: object properties: detail: type: string example: detail: Internal server error '503': description: >- The API key could not be checked, or the request could not be started, because a backing service is briefly unavailable. Nothing was charged. Retry after the `Retry-After` header. content: application/json: schema: type: object properties: detail: type: string example: detail: Could not verify the API key right now. Retry shortly. components: schemas: MonitorValidationErrorResponse: properties: detail: anyOf: - type: string - items: $ref: '#/components/schemas/MonitorValidationErrorItem' type: array title: Detail type: object required: - detail title: MonitorValidationErrorResponse description: Both FastAPI field errors and explicit monitor validation failures. MonitorValidationErrorItem: properties: loc: items: anyOf: - type: string - type: integer type: array title: Loc description: Path to the invalid field examples: - - body - name msg: type: string title: Msg description: Human-readable error message examples: - Field required type: type: string title: Type description: Validation error code examples: - missing input: title: Input ctx: anyOf: - additionalProperties: true type: object - type: 'null' title: Ctx type: object required: - loc - msg - type title: MonitorValidationErrorItem description: A FastAPI request-validation error, including its field path. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.