> ## Documentation Index > Fetch the complete documentation index at: https://redbark.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Make a client fact > Makes a client fact of the firm's own, with a key made from the label (firm_ and a slug). Its type and whether a client holds one value or several are fixed once made. Point a document field at it with fact_key to fill it. A label or instruction that asks for a tax file number, an identity document number, a government reference number or medical details is refused (value_never_kept). Only an admin can call this. ## OpenAPI ````yaml /openapi/advisor.json post /fact_definitions openapi: 3.1.0 info: title: Redbark Advisor API version: 2.0.0 description: >- Read and write access to one advice firm in Redbark Advisor: clients, checklists, documents, money, messages, reports, team and webhooks. Send an API key or a connected app’s access token as a bearer token. A credential carries scopes, one read and one write per area, and each call says the scope it needs. A write scope brings its read scope. Each key may make 120 requests a minute. servers: - url: https://advisor.redbark.com/api/v1 security: - bearerAuth: [] tags: - name: Firm description: The firm, its name and its branding. - name: Team description: Team members and their roles. - name: Clients description: Clients, their people and portal invites. - name: Checklists description: Checklist templates, the checklists sent to clients and their answers. - name: Documents description: Documents clients upload and the details read from them. - name: Money description: Bank connections, accounts, balances and transactions. - name: Document types description: Document types, their fields and the client facts they fill. - name: Messages description: Messages between the firm and clients. - name: Reports description: Reports exported for clients. - name: Webhooks description: Webhook endpoints and their deliveries. - name: Webhook events description: Events sent to your webhook endpoints. paths: /fact_definitions: post: tags: - Document types summary: Make a client fact description: >- Makes a client fact of the firm's own, with a key made from the label (firm_ and a slug). Its type and whether a client holds one value or several are fixed once made. Point a document field at it with fact_key to fill it. A label or instruction that asks for a tax file number, an identity document number, a government reference number or medical details is refused (value_never_kept). Only an admin can call this. operationId: create_fact_definition parameters: [] requestBody: required: true content: application/json: schema: type: object properties: label: type: string minLength: 1 maxLength: 80 type: type: string enum: - text - date - amount description: text, date (YYYY-MM-DD) or amount (dollars). single: type: boolean description: >- true when a client holds one value, such as a salary; false for several. required: - label - type - single responses: '201': description: Created. content: application/json: schema: $ref: '#/components/schemas/FactDefinition' '400': description: The request is not valid. content: application/json: schema: $ref: '#/components/schemas/Error' '401': description: The API key or access token is missing, wrong, expired or revoked. content: application/json: schema: $ref: '#/components/schemas/Error' '402': description: >- subscription_required: the firm has no active subscription, so it cannot add or invite clients or send checklists. content: application/json: schema: $ref: '#/components/schemas/Error' '403': description: >- The credential lacks the scope this call needs, the call is for admins only, or the member it acts as has left the firm. content: application/json: schema: $ref: '#/components/schemas/Error' '404': description: No such resource in this firm. content: application/json: schema: $ref: '#/components/schemas/Error' '409': description: >- The resource is in a state that does not allow this, such as an archived client, or client_limit_reached: the plan’s 20 active clients are in use. content: application/json: schema: $ref: '#/components/schemas/Error' '413': description: The request body is too large. content: application/json: schema: $ref: '#/components/schemas/Error' '429': description: Too many requests. See the Retry-After header. content: application/json: schema: $ref: '#/components/schemas/Error' '500': description: Something went wrong on our side. Try again. content: application/json: schema: $ref: '#/components/schemas/Error' security: - bearerAuth: - document_types:write components: schemas: FactDefinition: type: object properties: object: type: string enum: - fact_definition id: anyOf: - type: string - type: 'null' description: Null for a built-in fact. key: type: string description: Such as salary, or firm_ and a slug for a fact the firm made. label: type: string type: type: string enum: - text - date - amount description: text, date (YYYY-MM-DD) or amount (dollars). single: type: boolean description: A client holds one value, so accepting a new one replaces the old. origin: type: string enum: - redbark - firm description: >- redbark for Redbark's own, which cannot be changed; firm for the firm's own. archived: type: boolean description: Filled from no new document. Values already accepted stay. filled_by: type: array items: type: object properties: type_key: type: string type_label: type: string field_key: type: string field_label: type: string required: - type_key - type_label - field_key - field_label additionalProperties: true description: The document fields that fill it. clients_with_value: type: number description: Clients holding an accepted value of it. required: - object - id - key - label - type - single - origin - archived - filled_by - clients_with_value additionalProperties: true Error: type: object properties: error: type: object properties: type: type: string enum: - invalid_request_error - authentication_error - permission_error - rate_limit_error - api_error code: type: string message: type: string param: anyOf: - type: string - type: 'null' request_id: type: string required: - type - code - message - param - request_id additionalProperties: true required: - error additionalProperties: true securitySchemes: bearerAuth: type: http scheme: bearer description: >- A firm API key, shown once when it is made, or a connected app’s OAuth access token. Each operation lists the scope it needs, such as clients:write. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.