> ## 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. # The research providers a run can use > The Deep Research provider catalog for the token owner: every provider's id (slug), label, category, description, icon and docs link, its key mode (platform: it runs on Fuse's key; byok-required: the user must save their own key), whether this user has saved one (hasUserKey), where the key that would be used comes from (source: platform, byok or none), whether research runs may call it (allowedInRuns) and, when the provider can back an enrichment waterfall, the channels it fills and the input-field combinations it accepts. Keys are never returned. The catalog informs BYOK settings and smart-column provider choice; a run itself has no provider selector. Rate limit: 30 requests per minute, 1000 per day. Errors: - `429` `RATE_LIMITED` — Per-user quota for this endpoint family exceeded (30 per minute, 1000 per day); retry after the Retry-After / RateLimit-Reset seconds. Requires one of the following token scopes: research. ## OpenAPI ````yaml /openapi.json get /business/research/providers 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/research/providers: get: tags: - Research summary: The research providers a run can use description: >- The Deep Research provider catalog for the token owner: every provider's id (slug), label, category, description, icon and docs link, its key mode (platform: it runs on Fuse's key; byok-required: the user must save their own key), whether this user has saved one (hasUserKey), where the key that would be used comes from (source: platform, byok or none), whether research runs may call it (allowedInRuns) and, when the provider can back an enrichment waterfall, the channels it fills and the input-field combinations it accepts. Keys are never returned. The catalog informs BYOK settings and smart-column provider choice; a run itself has no provider selector. Rate limit: 30 requests per minute, 1000 per day. Errors: - `429` `RATE_LIMITED` — Per-user quota for this endpoint family exceeded (30 per minute, 1000 per day); retry after the Retry-After / RateLimit-Reset seconds. Requires one of the following token scopes: research. operationId: listResearchProviders 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 properties: providers: type: array items: type: object properties: id: type: string label: type: string category: type: string enum: - business-data - company-lookalike-data - company-signals - contact-email-and-phone-enrichment - contact-verification - social-and-ad-intelligence - web-search description: type: - string - 'null' iconUrl: type: - string - 'null' docsUrl: type: string keyMode: type: string enum: - platform - byok - byok-required hasUserKey: type: boolean allowedInRuns: type: boolean source: type: string enum: - platform - byok - none enrichment: type: - object - 'null' properties: channels: type: array items: type: string enum: - work_email - personal_email - phone inputs: type: object properties: anyOf: type: array items: type: array items: type: string required: - anyOf keyMode: type: string enum: - platform - byok - byok-required required: - channels - inputs - keyMode required: - id - label - category - description - iconUrl - docsUrl - keyMode - hasUserKey - allowedInRuns - source - enrichment required: - providers example: providers: - id: apollo label: Apollo category: contact-email-and-phone-enrichment description: >- People & company search with contact info; people match/enrich. iconUrl: https://www.google.com/s2/favicons?sz=128&domain=apollo.io docsUrl: https://tryfuse.ai/providers/apollo keyMode: byok-required hasUserKey: false allowedInRuns: true source: none enrichment: channels: - work_email - personal_email - phone inputs: anyOf: - - linkedin_url - - first_name - last_name - company_name - - first_name - last_name - domain keyMode: platform - id: zerobounce label: ZeroBounce category: contact-verification description: Verify/validate email deliverability. iconUrl: >- https://www.google.com/s2/favicons?sz=128&domain=zerobounce.net docsUrl: https://tryfuse.ai/providers/zerobounce keyMode: platform hasUserKey: false allowedInRuns: true source: platform enrichment: null '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. ````