> ## Documentation Index > Fetch the complete documentation index at: https://docs.fuseai.com/llms.txt > Use this file to discover all available pages before exploring further. # Where a smart-column cell's value came from > How one smart-column cell got its value: the engine's `reasoning`, the `researchSteps` it took, the `sourceUrls` it read, an `errorMessage` when the row failed, and `fetchedAt`, when the cell was last computed. Provenance is written per cell by each run, so a cell no run has computed yet answers 404 PROVENANCE_NOT_FOUND and a column id that is not a smart column on this list answers 404 COLUMN_NOT_FOUND. The row is addressed by its list row id — a contact id on contact lists, a company id on company lists. Free to call. Errors: - `404` `LIST_NOT_FOUND` — No list with that id belongs to you. - `404` `COLUMN_NOT_FOUND` — No smart column with that id is on this list (a plain custom column answers this too). - `404` `PROVENANCE_NOT_FOUND` — The column exists but no run has computed that row, so there is no provenance to show. - `422` `VALIDATION_FAILED` — The path, query or body failed validation; `param` names the offending field and `message` says why. - `429` `RATE_LIMITED` — More than 120 requests per minute or 10,000 per day on the lists bucket, which every /business/lists endpoint shares; retry after Retry-After. - `500` `UNEXPECTED_ERROR` — The request could not be completed; quote request_id to support. Requires one of the following token scopes: lists. ## OpenAPI ````yaml /openapi.json get /business/lists/{listId}/rows/{contactId}/columns/{columnId}/provenance openapi: 3.1.0 info: title: Fuse Business API version: 1.0.0 description: >- External API for lists, campaigns, prospect search and contacts. Authenticate with your API token as HTTP Basic. All paths are under /api/v1. servers: - url: https://api.tryfuse.ai/api/v1 description: Production security: - basicAuth: [] tags: - name: Lists - name: Custom columns - name: Smart columns - name: Exports - name: Campaigns - name: Knowledge hubs - name: Analytics - name: Website intent - name: Account - name: Prospect search - name: Campaign steps - name: Scheduled sends - name: Campaign templates - name: Agents - name: Research - name: Company search - name: Saved searches - name: Folders - name: Contacts paths: /business/lists/{listId}/rows/{contactId}/columns/{columnId}/provenance: get: tags: - Smart columns summary: Where a smart-column cell's value came from description: >- How one smart-column cell got its value: the engine's `reasoning`, the `researchSteps` it took, the `sourceUrls` it read, an `errorMessage` when the row failed, and `fetchedAt`, when the cell was last computed. Provenance is written per cell by each run, so a cell no run has computed yet answers 404 PROVENANCE_NOT_FOUND and a column id that is not a smart column on this list answers 404 COLUMN_NOT_FOUND. The row is addressed by its list row id — a contact id on contact lists, a company id on company lists. Free to call. Errors: - `404` `LIST_NOT_FOUND` — No list with that id belongs to you. - `404` `COLUMN_NOT_FOUND` — No smart column with that id is on this list (a plain custom column answers this too). - `404` `PROVENANCE_NOT_FOUND` — The column exists but no run has computed that row, so there is no provenance to show. - `422` `VALIDATION_FAILED` — The path, query or body failed validation; `param` names the offending field and `message` says why. - `429` `RATE_LIMITED` — More than 120 requests per minute or 10,000 per day on the lists bucket, which every /business/lists endpoint shares; retry after Retry-After. - `500` `UNEXPECTED_ERROR` — The request could not be completed; quote request_id to support. Requires one of the following token scopes: lists. operationId: getSmartColumnCellProvenance parameters: - name: listId in: path required: true description: Id of the list that owns the smart column. schema: type: string description: Id of the list that owns the smart column. - name: contactId in: path required: true description: >- Id of the row whose cell to inspect: the row id from GET /business/lists/{listId}/rows (a contact id on contact lists, a company id on company lists). schema: type: string description: >- Id of the row whose cell to inspect: the row id from GET /business/lists/{listId}/rows (a contact id on contact lists, a company id on company lists). - name: columnId in: path required: true description: >- Id of the smart column, as returned when it was created or listed by GET /business/lists/{listId}/columns. schema: type: string description: >- Id of the smart column, as returned when it was created or listed by GET /business/lists/{listId}/columns. responses: '200': description: Success headers: RateLimit-Limit: schema: type: integer description: Requests permitted in the current window. RateLimit-Remaining: schema: type: integer description: Requests remaining in the current window. RateLimit-Reset: schema: type: integer description: Seconds until the current window resets. content: application/json: schema: type: object required: - provenance properties: provenance: type: object required: - reasoning - researchSteps - sourceUrls - errorMessage - fetchedAt properties: reasoning: type: - string - 'null' description: >- The engine's explanation of the value; null when the run recorded none. researchSteps: type: array items: type: string description: >- The steps the engine took, in order; empty when none were recorded. sourceUrls: type: array items: type: string description: >- Pages and references the engine read; empty when none were recorded. errorMessage: type: - string - 'null' description: Why the row failed, when it did. fetchedAt: type: - string - 'null' format: date-time description: When the cell was last computed. example: provenance: reasoning: >- The contact has 22 years of HR experience and currently holds a Recruitment Specialist role, with prior mid-senior titles such as Sr. Human Resources Generalist, which places them mid-level overall. researchSteps: - >- Found the LinkedIn profile for LaShawnda Spencer with a detailed career history. - >- Current job title is Recruitment Specialist with seniority listed as Entry level. - >- Previous roles include mid-senior positions such as Sr. Human Resources Generalist and Recruitment Manager. - >- Overall seniority assessed as mid-level based on career progression and roles held. sourceUrls: - https://linkedin.com/in/lashawnda-spencer-55555b17 errorMessage: null fetchedAt: '2026-08-25T11:16:53.898Z' '400': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '401': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '402': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '403': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '404': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '409': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '422': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '429': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '500': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' security: - basicAuth: [] components: schemas: Error: type: object properties: error: type: object properties: code: type: string message: type: string param: type: - string - 'null' doc_url: type: - string - 'null' request_id: type: - string - 'null' required: - code - message required: - error securitySchemes: basicAuth: type: http scheme: basic description: >- Your API token (`af_…`) as the Basic-auth username, with an empty password. ````