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

# Audience crawl history API

> The last 30 crawl dispatches for an audience, scheduled and on-demand, with lifetime totals for domains and credits. Free.

## Frequently asked questions

<AccordionGroup>
  <Accordion title="What does the source field mean?">
    `cadence` means the dispatch came from the audience's scheduled `crawl_cadence`. `on-demand` means someone called [the refresh endpoint](/docs/api-reference/audiences/refresh-audience-crawl-api).
  </Accordion>

  <Accordion title="Why were domains deferred?">
    There is a nightly cap on total domains dispatched across the whole fleet, admitted oldest-scan-first. Members that do not fit are deferred to a later night and are not charged. For a large audience on a weekly cadence this means coverage rotates across several nights.
  </Accordion>

  <Accordion title="How do I track what refreshing costs me?">
    The `totals` block gives lifetime crawls, domains dispatched and credits charged for this audience — the simplest way to see what freshness is costing you.
  </Accordion>
</AccordionGroup>


## OpenAPI

````yaml GET /v1/segments/{id}/crawls
openapi: 3.1.0
info:
  title: TechnologyChecker API
  description: >-
    Discover technology stacks, track market trends, and enrich data with
    company intelligence.
  version: 1.0.0
  contact:
    name: TechnologyChecker Support
    email: support@technologychecker.io
    url: https://technologychecker.io
servers:
  - url: https://api.technologychecker.io
    description: Production
security:
  - bearerAuth: []
tags:
  - name: Domain technologies
    description: Look up technologies detected on any domain
  - name: Technology data
    description: Search, look up, and get details on tracked technologies
  - name: Market intelligence
    description: Technology stats, trends, and market share
  - name: Company data
    description: Firmographic and company intelligence
  - name: Live detection
    description: Real-time technology detection with browser rendering
  - name: Signals
    description: >-
      Intent signals derived from technology state transitions: who adopted, who
      churned, who switched, and who has a gap in their stack.
  - name: Alerts
    description: >-
      Saved signal queries delivered to your webhook. Every signal you can
      query, you can subscribe to.
  - name: Audiences
    description: >-
      Saved groups of domains — uploaded lists or computed recipes — that you
      can profile, slice and monitor.
  - name: Lead lists
    description: >-
      Build and export targeted domain lists combining technology detection with
      company data.
paths:
  /v1/segments/{id}/crawls:
    get:
      tags:
        - Audiences
      summary: Audience crawl history API
      description: >-
        The last 30 crawl dispatches for this audience — scheduled and one-off —
        plus lifetime totals for domains dispatched and credits charged. Free.
      operationId: getAudienceCrawlHistory
      parameters:
        - name: id
          in: path
          required: true
          description: The audience id.
          schema:
            type: string
            example: seg_8f3a2c1b
      responses:
        '200':
          description: Dispatch history and totals
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    example: true
                  data:
                    type: object
                    properties:
                      segment:
                        type: object
                        properties:
                          id:
                            type: string
                            example: seg_8f3a2c1b
                          name:
                            type: string
                            example: YC W25 portfolio
                      crawl_cadence:
                        type: string
                        example: weekly
                      last_dispatched_at:
                        type: string
                        nullable: true
                      totals:
                        type: object
                        properties:
                          crawls:
                            type: integer
                            example: 6
                          domains_dispatched:
                            type: integer
                            example: 4212
                          credits_charged:
                            type: integer
                            example: 4212
                      crawls:
                        type: array
                        items:
                          type: object
                          properties:
                            dispatched_at:
                              type: string
                              example: '2026-08-20 03:00:12'
                            source:
                              type: string
                              enum:
                                - cadence
                                - on-demand
                              example: cadence
                            domains_dispatched:
                              type: integer
                              example: 812
                            domains_skipped_fresh:
                              type: integer
                              example: 5102
                            domains_deferred:
                              type: integer
                              example: 0
                            credits_charged:
                              type: integer
                              example: 812
                            request_ids:
                              type: array
                              items:
                                type: string
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
        '429':
          $ref: '#/components/responses/RateLimited'
components:
  responses:
    BadRequest:
      description: Invalid or missing parameters
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
          example:
            success: false
            error:
              code: VALIDATION_ERROR
              message: >-
                Provide exactly one scope: technology_id, technology or
                category_id.
    Unauthorized:
      description: Missing or invalid API key
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
    NotFound:
      description: Resource not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
    RateLimited:
      description: Rate limit exceeded
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
  schemas:
    ApiError:
      type: object
      properties:
        success:
          type: boolean
          example: false
        error:
          type: object
          properties:
            code:
              type: string
              example: UNAUTHORIZED
            message:
              type: string
              example: Missing or invalid API key
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: >-
        API key in format `tapi_live_[32-char]` (live) or `tapi_test_[32-char]`
        (test)

````