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

# List sources

> Free directory of verified sources, including discovery-only and restricted entries. Requires sources:read.



## OpenAPI

````yaml /openapi/apiosk-api.json get /v2/sources
openapi: 3.1.0
info:
  title: Apiosk API
  version: 2.0.0
  description: >-
    Buy verifiable data per call with an organisation API key. Discover sources,
    run one directly, or let Apiosk plan across sources. Amounts are USD; every
    amount carries an exact micro-USD integer.
servers:
  - url: https://gateway.apiosk.com
security:
  - apiKey: []
paths:
  /v2/sources:
    get:
      summary: List sources
      description: >-
        Free directory of verified sources, including discovery-only and
        restricted entries. Requires sources:read.
      operationId: listSources
      parameters:
        - name: search
          in: query
          schema:
            type: string
            maxLength: 200
        - name: category
          in: query
          schema:
            type: string
        - name: tag
          in: query
          schema:
            type: string
        - name: sector
          in: query
          schema:
            type: string
        - name: capability
          in: query
          schema:
            type: string
        - name: offset
          in: query
          schema:
            type: integer
            minimum: 0
        - name: limit
          in: query
          schema:
            type: integer
            minimum: 1
            maximum: 50
            default: 20
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                type: object
                properties:
                  protocol_version:
                    type: string
                  sources:
                    type: array
                    items:
                      type: object
                      properties:
                        slug:
                          type: string
                          example: kvk-dutch-business-register
                        name:
                          type: string
                        description:
                          type: string
                        category:
                          type: string
                        tags:
                          type: array
                          items:
                            type: string
                        sectors:
                          type: array
                          items:
                            type: string
                        capabilities:
                          type: array
                          items:
                            type: string
                          description: >-
                            Advertised and accepted capabilities; check
                            executable_capabilities to identify runnable ones.
                        input_types:
                          type: array
                          items:
                            type: string
                        endpoint_count:
                          type: integer
                          description: >-
                            Registered endpoints, including endpoints without an
                            accepted execution contract.
                        available_in_v2:
                          type: boolean
                          description: >-
                            True if at least one operation in the source group
                            can run.
                        provider_slug:
                          type:
                            - string
                            - 'null'
                        categories:
                          type: array
                          items:
                            type: string
                        logo_url:
                          type:
                            - string
                            - 'null'
                          format: uri
                        readiness:
                          type: object
                          additionalProperties: true
                          description: >-
                            Contract and evidence coverage, not a guarantee of
                            live provider success.
                        executable_capabilities:
                          type: array
                          items:
                            type: string
                          description: Capabilities accepted by the runtime.
                        service_count:
                          type: integer
                        matching_service_count:
                          type: integer
                        services:
                          type: array
                          items:
                            type: object
                            properties:
                              slug:
                                type: string
                              name:
                                type: string
                              description:
                                type: string
                              category:
                                type: string
                  total:
                    type: integer
                  catalog_total:
                    type: integer
                    description: >-
                      All verified directory groups, including discovery-only
                      and restricted sources.
                  offset:
                    type: integer
                  next_offset:
                    type:
                      - integer
                      - 'null'
                  categories:
                    type: array
                    items:
                      type: string
                  tags:
                    type: array
                    items:
                      type: string
                  sectors:
                    type: array
                    items:
                      type: string
                  capabilities:
                    type: array
                    items:
                      type: string
                  notice:
                    type: string
        '400':
          description: invalid_query in a Gateway v2 error envelope
        '401':
          description: >-
            invalid_api_key for a presented key; missing credentials can return
            the Gateway v2 errors array.
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: object
                    required:
                      - code
                      - message
                    properties:
                      code:
                        type: string
                        example: invalid_source_input
                      message:
                        type: string
                      required_scope:
                        type: string
                      limit:
                        type: string
                        enum:
                          - per_request
                          - monthly
                          - max_spend
                          - daily
                      required:
                        type: object
                        properties:
                          amount:
                            type: number
                            example: 0.023
                          amount_micro_usd:
                            type: string
                            example: '23000'
                          currency:
                            type: string
                            example: USD
                      available:
                        type: object
                        properties:
                          amount:
                            type: number
                            example: 0.023
                          amount_micro_usd:
                            type: string
                            example: '23000'
                          currency:
                            type: string
                            example: USD
                      field:
                        type: string
                      missing:
                        type: array
                        items:
                          type: string
                      expected:
                        type: array
                        items:
                          type: string
                      operations:
                        type: array
                        items:
                          type: string
                      retry_after_ms:
                        type: integer
        '403':
          description: insufficient_scope or organisation_unavailable
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: object
                    required:
                      - code
                      - message
                    properties:
                      code:
                        type: string
                        example: invalid_source_input
                      message:
                        type: string
                      required_scope:
                        type: string
                      limit:
                        type: string
                        enum:
                          - per_request
                          - monthly
                          - max_spend
                          - daily
                      required:
                        type: object
                        properties:
                          amount:
                            type: number
                            example: 0.023
                          amount_micro_usd:
                            type: string
                            example: '23000'
                          currency:
                            type: string
                            example: USD
                      available:
                        type: object
                        properties:
                          amount:
                            type: number
                            example: 0.023
                          amount_micro_usd:
                            type: string
                            example: '23000'
                          currency:
                            type: string
                            example: USD
                      field:
                        type: string
                      missing:
                        type: array
                        items:
                          type: string
                      expected:
                        type: array
                        items:
                          type: string
                      operations:
                        type: array
                        items:
                          type: string
                      retry_after_ms:
                        type: integer
        '429':
          description: rate_limit_exceeded
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: object
                    required:
                      - code
                      - message
                    properties:
                      code:
                        type: string
                        example: invalid_source_input
                      message:
                        type: string
                      required_scope:
                        type: string
                      limit:
                        type: string
                        enum:
                          - per_request
                          - monthly
                          - max_spend
                          - daily
                      required:
                        type: object
                        properties:
                          amount:
                            type: number
                            example: 0.023
                          amount_micro_usd:
                            type: string
                            example: '23000'
                          currency:
                            type: string
                            example: USD
                      available:
                        type: object
                        properties:
                          amount:
                            type: number
                            example: 0.023
                          amount_micro_usd:
                            type: string
                            example: '23000'
                          currency:
                            type: string
                            example: USD
                      field:
                        type: string
                      missing:
                        type: array
                        items:
                          type: string
                      expected:
                        type: array
                        items:
                          type: string
                      operations:
                        type: array
                        items:
                          type: string
                      retry_after_ms:
                        type: integer
        '503':
          description: service_unavailable
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: object
                    required:
                      - code
                      - message
                    properties:
                      code:
                        type: string
                        example: invalid_source_input
                      message:
                        type: string
                      required_scope:
                        type: string
                      limit:
                        type: string
                        enum:
                          - per_request
                          - monthly
                          - max_spend
                          - daily
                      required:
                        type: object
                        properties:
                          amount:
                            type: number
                            example: 0.023
                          amount_micro_usd:
                            type: string
                            example: '23000'
                          currency:
                            type: string
                            example: USD
                      available:
                        type: object
                        properties:
                          amount:
                            type: number
                            example: 0.023
                          amount_micro_usd:
                            type: string
                            example: '23000'
                          currency:
                            type: string
                            example: USD
                      field:
                        type: string
                      missing:
                        type: array
                        items:
                          type: string
                      expected:
                        type: array
                        items:
                          type: string
                      operations:
                        type: array
                        items:
                          type: string
                      retry_after_ms:
                        type: integer
components:
  securitySchemes:
    apiKey:
      type: http
      scheme: bearer
      description: 'An organisation API key: Authorization: Bearer apk_org_live_…'

````