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

# Retrieve a call transcript

> Returns one independently revisioned, cursor-pinned page of sanitized conversation turns. Transcript readiness is independent from summary readiness. Every response includes Brightalk-Version and X-Request-Id; rate-limited responses also expose the effective bucket counters.



## OpenAPI

````yaml /openapi/openapi.yaml get /calls/{call_id}/transcript
openapi: 3.1.0
info:
  title: Brightalk Public API
  version: '2026-07-16'
  description: >-
    Server-to-server REST API for AI calls, batch dialing, and dashboard-managed
    Automation definitions.
  license:
    name: Brightalk API Terms
    identifier: LicenseRef-Brightalk-API
servers:
  - url: https://api.brightalk.ai
    description: Production
security:
  - bearerAuth: []
tags:
  - name: Agents
    description: Eligible dashboard-managed AI voice agents.
  - name: Automations
    description: Dashboard-managed Automation summaries.
  - name: Contacts
    description: Organization contacts and external identities.
  - name: Calls
    description: Immediate asynchronous AI calls and their scalar results.
  - name: Batches
    description: Draft, schedule, and control aggregate batch dialing.
  - name: Automation runs
    description: Create and control one-contact Automation runs.
paths:
  /calls/{call_id}/transcript:
    get:
      tags:
        - Calls
      summary: Retrieve a call transcript
      description: >-
        Returns one independently revisioned, cursor-pinned page of sanitized
        conversation turns. Transcript readiness is independent from summary
        readiness. Every response includes Brightalk-Version and X-Request-Id;
        rate-limited responses also expose the effective bucket counters.
      operationId: getCallTranscript
      parameters:
        - $ref: '#/components/parameters/BrightalkVersion'
        - $ref: '#/components/parameters/XRequestId'
        - $ref: '#/components/parameters/CallIdPath'
        - $ref: '#/components/parameters/TranscriptLimit'
        - $ref: '#/components/parameters/TranscriptCursor'
      responses:
        '200':
          description: Current or cursor-pinned transcript result returned.
          headers:
            Brightalk-Version:
              $ref: '#/components/headers/Brightalk-Version'
            X-Request-Id:
              $ref: '#/components/headers/X-Request-Id'
            RateLimit-Limit:
              $ref: '#/components/headers/RateLimit-Limit'
            RateLimit-Remaining:
              $ref: '#/components/headers/RateLimit-Remaining'
            RateLimit-Reset:
              $ref: '#/components/headers/RateLimit-Reset'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CallTranscript'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '403':
          $ref: '#/components/responses/Forbidden'
        '404':
          $ref: '#/components/responses/NotFound'
        '405':
          $ref: '#/components/responses/MethodNotAllowed'
        '429':
          $ref: '#/components/responses/TooManyRequests'
        '500':
          $ref: '#/components/responses/InternalError'
      x-codeSamples:
        - lang: curl
          label: cURL
          source: >-
            curl --request GET
            'https://api.brightalk.ai/calls/11111111-1111-4111-8111-111111111111/transcript?limit=100'
            \
              --header "Authorization: Bearer $BRIGHTALK_API_KEY" \
              --header "Brightalk-Version: 2026-07-16"
        - lang: javascript
          label: JavaScript
          source: >-
            const response = await
            fetch("https://api.brightalk.ai/calls/11111111-1111-4111-8111-111111111111/transcript?limit=100",
            {
              method: "GET",
              headers: {
                Authorization: `Bearer ${process.env.BRIGHTALK_API_KEY}`,
                "Brightalk-Version": "2026-07-16",
              },
            });

            console.log(response.status, await response.json());
        - lang: python
          label: Python
          source: |-
            import os
            import requests

            response = requests.request(
                "GET",
                "https://api.brightalk.ai/calls/11111111-1111-4111-8111-111111111111/transcript?limit=100",
                headers={
                "Authorization": f"Bearer {os.environ['BRIGHTALK_API_KEY']}",
                "Brightalk-Version": "2026-07-16",
                },
            )
            print(response.status_code, response.json())
components:
  parameters:
    BrightalkVersion:
      name: Brightalk-Version
      in: header
      required: false
      description: >-
        Selects the date-based API version. Omission uses the organization’s
        pinned default.
      schema:
        type: string
        const: '2026-07-16'
        default: '2026-07-16'
    XRequestId:
      name: X-Request-Id
      in: header
      required: false
      description: >-
        A caller-generated correlation value matching [A-Za-z0-9._:-]{1,64}.
        Invalid values are replaced.
      schema:
        type: string
        pattern: ^[A-Za-z0-9._:-]{1,64}$
        maxLength: 64
    CallIdPath:
      name: call_id
      in: path
      required: true
      description: The opaque Call identifier.
      schema:
        type: string
        format: uuid
        minLength: 1
        maxLength: 255
        description: An opaque resource identifier.
        example: 11111111-1111-4111-8111-111111111111
    TranscriptLimit:
      name: limit
      in: query
      required: false
      description: >-
        Maximum transcript turns to return. Defaults to 100; a page can stop
        earlier at the response byte budget.
      schema:
        type: integer
        minimum: 1
        maximum: 250
        default: 100
    TranscriptCursor:
      name: cursor
      in: query
      required: false
      description: Opaque cursor returned by the preceding transcript page.
      schema:
        type: string
        minLength: 1
        maxLength: 2048
  headers:
    Brightalk-Version:
      description: The date-based version applied to the request.
      required: true
      schema:
        type: string
        const: '2026-07-16'
    X-Request-Id:
      description: The accepted caller correlation value or a server-generated replacement.
      required: true
      schema:
        type: string
        pattern: ^[A-Za-z0-9._:-]{1,64}$
    RateLimit-Limit:
      description: The effective request allowance for the selected bucket.
      schema:
        type: integer
        minimum: 1
    RateLimit-Remaining:
      description: The nonnegative number of requests remaining in the selected bucket.
      schema:
        type: integer
        minimum: 0
    RateLimit-Reset:
      description: >-
        A nonnegative integer number of delta-seconds from response generation
        until the effective bucket resets; never an epoch timestamp.
      schema:
        type: integer
        minimum: 0
    Allow:
      description: A comma-separated list of methods allowed on the known path.
      schema:
        type: string
        example: GET, POST
    Retry-After:
      description: >-
        A nonnegative integer number of delta-seconds to wait before retrying;
        never an epoch timestamp.
      schema:
        type: integer
        minimum: 0
  schemas:
    CallTranscript:
      description: >-
        Independently revisioned call transcript result. A cursor pins one
        immutable revision; a higher revision is visible only when pagination
        starts again without that cursor.
      oneOf:
        - type: object
          additionalProperties: false
          description: Processing normally; poll again after the documented interval.
          required:
            - object
            - schema_version
            - call_id
            - status
            - revision
            - turns
            - next_cursor
            - reason
            - generated_at
            - poll_after_seconds
          properties:
            object:
              type: string
              const: call_transcript
            schema_version:
              type: string
              const: '2026-07-28'
            call_id:
              type: string
              format: uuid
              minLength: 1
              maxLength: 255
            status:
              type: string
              const: processing
            revision:
              type: integer
              const: 0
            turns:
              type: array
              maxItems: 0
              items:
                $ref: '#/components/schemas/CallTranscriptTurn'
            next_cursor:
              type: 'null'
            reason:
              type: 'null'
            generated_at:
              type: 'null'
            poll_after_seconds:
              type: integer
              const: 5
        - type: object
          additionalProperties: false
          description: >-
            This page of transcript turns is ready for the cursor-pinned
            revision.
          required:
            - object
            - schema_version
            - call_id
            - status
            - revision
            - turns
            - next_cursor
            - reason
            - generated_at
            - poll_after_seconds
          properties:
            object:
              type: string
              const: call_transcript
            schema_version:
              type: string
              const: '2026-07-28'
            call_id:
              type: string
              format: uuid
              minLength: 1
              maxLength: 255
            status:
              type: string
              const: ready
            revision:
              type: integer
              minimum: 1
            turns:
              type: array
              maxItems: 250
              items:
                $ref: '#/components/schemas/CallTranscriptTurn'
            next_cursor:
              type:
                - string
                - 'null'
              minLength: 1
              maxLength: 2048
            reason:
              type: 'null'
            generated_at:
              type: string
              format: date-time
            poll_after_seconds:
              type: 'null'
        - type: object
          additionalProperties: false
          description: The call cannot produce a transcript; inspect the stable reason.
          required:
            - object
            - schema_version
            - call_id
            - status
            - revision
            - turns
            - next_cursor
            - reason
            - generated_at
            - poll_after_seconds
          properties:
            object:
              type: string
              const: call_transcript
            schema_version:
              type: string
              const: '2026-07-28'
            call_id:
              type: string
              format: uuid
              minLength: 1
              maxLength: 255
            status:
              type: string
              const: unavailable
            revision:
              type: integer
              minimum: 1
            turns:
              type: array
              maxItems: 0
              items:
                $ref: '#/components/schemas/CallTranscriptTurn'
            next_cursor:
              type: 'null'
            reason:
              $ref: '#/components/schemas/CallResultUnavailableReason'
            generated_at:
              type: 'null'
            poll_after_seconds:
              type: 'null'
        - type: object
          additionalProperties: false
          description: Safe transcript processing was exhausted.
          required:
            - object
            - schema_version
            - call_id
            - status
            - revision
            - turns
            - next_cursor
            - reason
            - generated_at
            - poll_after_seconds
          properties:
            object:
              type: string
              const: call_transcript
            schema_version:
              type: string
              const: '2026-07-28'
            call_id:
              type: string
              format: uuid
              minLength: 1
              maxLength: 255
            status:
              type: string
              const: failed
            revision:
              type: integer
              minimum: 1
            turns:
              type: array
              maxItems: 0
              items:
                $ref: '#/components/schemas/CallTranscriptTurn'
            next_cursor:
              type: 'null'
            reason:
              type: string
              const: processing_failed
            generated_at:
              type: 'null'
            poll_after_seconds:
              type: 'null'
    CallTranscriptTurn:
      type: object
      additionalProperties: false
      description: One sanitized conversation turn in sequence order.
      required:
        - id
        - sequence
        - speaker
        - text
        - audio_offset_ms
      properties:
        id:
          type: string
          format: uuid
          minLength: 1
          maxLength: 255
          description: Opaque identifier stable within this transcript revision.
        sequence:
          type: integer
          minimum: 0
          description: Zero-based stable order within this transcript revision.
        speaker:
          type: string
          description: >-
            agent is the AI voice agent, contact is the called participant, and
            unknown is used only when the speaker cannot be classified safely.
          enum:
            - agent
            - contact
            - unknown
        text:
          type: string
          minLength: 1
          maxLength: 16000
          description: Sanitized text for this conversation turn.
        audio_offset_ms:
          type:
            - integer
            - 'null'
          minimum: 0
          maximum: 9007199254740991
          description: >-
            Canonical millisecond offset from the start of call audio; null
            means no canonical offset is available.
    CallResultUnavailableReason:
      type: string
      description: >-
        Stable reason a result is unavailable. call_not_connected means the call
        never connected; no_usable_audio means no safe audio source exists;
        no_speech means no usable conversation was detected; not_retained means
        the content is no longer retained.
      enum:
        - call_not_connected
        - no_usable_audio
        - no_speech
        - not_retained
    ErrorEnvelope:
      type: object
      additionalProperties: false
      properties:
        error:
          $ref: '#/components/schemas/Error'
      required:
        - error
    Error:
      type: object
      additionalProperties: false
      properties:
        code:
          type: string
          enum:
            - authentication_required
            - invalid_api_key
            - api_key_expired
            - organization_not_enabled
            - insufficient_scope
            - unsupported_version
            - validation_error
            - invalid_json
            - resource_not_found
            - resource_state_conflict
            - method_not_allowed
            - request_too_large
            - unsupported_destination
            - contact_identity_conflict
            - idempotency_key_required
            - idempotency_conflict
            - idempotency_in_progress
            - duplicate_active_run
            - rate_limit_exceeded
            - recipient_blocked_by_policy
            - internal_error
          example: validation_error
        message:
          type: string
          example: The request could not be validated.
        request_id:
          type: string
          pattern: ^[A-Za-z0-9._:-]{1,64}$
          example: req_demo_001
        details:
          $ref: '#/components/schemas/ErrorDetails'
      required:
        - code
        - message
        - request_id
    ErrorDetails:
      type: object
      additionalProperties: false
      properties:
        fields:
          type: array
          maxItems: 50
          items:
            $ref: '#/components/schemas/ErrorField'
        truncated:
          type: boolean
          const: true
        supported_versions:
          type: array
          items:
            type: string
            pattern: ^\d{4}-\d{2}-\d{2}$
        existing_run_id:
          type: string
          minLength: 1
          maxLength: 255
          description: An opaque resource identifier.
          example: run_demo_001
    ErrorField:
      type: object
      additionalProperties: false
      properties:
        path:
          type: string
          example: recipient.phone_number
        code:
          type: string
          example: invalid_e164
      required:
        - path
        - code
  responses:
    BadRequest:
      description: >-
        The version, request, query, or state-independent destination validation
        failed.
      headers:
        Brightalk-Version:
          $ref: '#/components/headers/Brightalk-Version'
        X-Request-Id:
          $ref: '#/components/headers/X-Request-Id'
        RateLimit-Limit:
          $ref: '#/components/headers/RateLimit-Limit'
        RateLimit-Remaining:
          $ref: '#/components/headers/RateLimit-Remaining'
        RateLimit-Reset:
          $ref: '#/components/headers/RateLimit-Reset'
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorEnvelope'
          examples:
            validationError:
              value:
                error:
                  code: validation_error
                  message: The request could not be validated.
                  request_id: req_demo_001
                  details:
                    fields:
                      - path: recipient.phone_number
                        code: invalid_e164
            unsupportedVersion:
              value:
                error:
                  code: unsupported_version
                  message: The requested API version is not supported.
                  request_id: req_demo_001
                  details:
                    supported_versions:
                      - '2026-07-16'
            unsupportedDestination:
              value:
                error:
                  code: unsupported_destination
                  message: The destination is not supported.
                  request_id: req_demo_001
    Unauthorized:
      description: Authentication failed.
      headers:
        Brightalk-Version:
          $ref: '#/components/headers/Brightalk-Version'
        X-Request-Id:
          $ref: '#/components/headers/X-Request-Id'
        RateLimit-Limit:
          $ref: '#/components/headers/RateLimit-Limit'
        RateLimit-Remaining:
          $ref: '#/components/headers/RateLimit-Remaining'
        RateLimit-Reset:
          $ref: '#/components/headers/RateLimit-Reset'
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorEnvelope'
          examples:
            missingBearer:
              value:
                error:
                  code: authentication_required
                  message: Authentication is required.
                  request_id: req_demo_001
            malformedBearer:
              value:
                error:
                  code: authentication_required
                  message: Authentication is required.
                  request_id: req_demo_001
            unknownOrRevokedCredential:
              value:
                error:
                  code: invalid_api_key
                  message: The API key is invalid.
                  request_id: req_demo_001
            expiredCredential:
              value:
                error:
                  code: api_key_expired
                  message: The API key has expired.
                  request_id: req_demo_001
    Forbidden:
      description: The request is not authorized for this API operation.
      headers:
        Brightalk-Version:
          $ref: '#/components/headers/Brightalk-Version'
        X-Request-Id:
          $ref: '#/components/headers/X-Request-Id'
        RateLimit-Limit:
          $ref: '#/components/headers/RateLimit-Limit'
        RateLimit-Remaining:
          $ref: '#/components/headers/RateLimit-Remaining'
        RateLimit-Reset:
          $ref: '#/components/headers/RateLimit-Reset'
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorEnvelope'
          examples:
            organizationNotEnabled:
              value:
                error:
                  code: organization_not_enabled
                  message: The organization is not enabled for the Public API.
                  request_id: req_demo_001
            insufficientScope:
              value:
                error:
                  code: insufficient_scope
                  message: The API key does not have the required scope.
                  request_id: req_demo_001
    NotFound:
      description: The resource is absent or not visible to this organization.
      headers:
        Brightalk-Version:
          $ref: '#/components/headers/Brightalk-Version'
        X-Request-Id:
          $ref: '#/components/headers/X-Request-Id'
        RateLimit-Limit:
          $ref: '#/components/headers/RateLimit-Limit'
        RateLimit-Remaining:
          $ref: '#/components/headers/RateLimit-Remaining'
        RateLimit-Reset:
          $ref: '#/components/headers/RateLimit-Reset'
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorEnvelope'
          examples:
            resourceNotFound:
              value:
                error:
                  code: resource_not_found
                  message: The requested resource was not found.
                  request_id: req_demo_001
    MethodNotAllowed:
      description: The path is known but the method is not allowed.
      headers:
        Brightalk-Version:
          $ref: '#/components/headers/Brightalk-Version'
        X-Request-Id:
          $ref: '#/components/headers/X-Request-Id'
        RateLimit-Limit:
          $ref: '#/components/headers/RateLimit-Limit'
        RateLimit-Remaining:
          $ref: '#/components/headers/RateLimit-Remaining'
        RateLimit-Reset:
          $ref: '#/components/headers/RateLimit-Reset'
        Allow:
          $ref: '#/components/headers/Allow'
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorEnvelope'
          examples:
            methodNotAllowed:
              value:
                error:
                  code: method_not_allowed
                  message: The method is not allowed for this resource.
                  request_id: req_demo_001
    TooManyRequests:
      description: The selected request bucket is exhausted.
      headers:
        Brightalk-Version:
          $ref: '#/components/headers/Brightalk-Version'
        X-Request-Id:
          $ref: '#/components/headers/X-Request-Id'
        RateLimit-Limit:
          $ref: '#/components/headers/RateLimit-Limit'
        RateLimit-Remaining:
          $ref: '#/components/headers/RateLimit-Remaining'
        RateLimit-Reset:
          $ref: '#/components/headers/RateLimit-Reset'
        Retry-After:
          $ref: '#/components/headers/Retry-After'
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorEnvelope'
          examples:
            rateLimitExceeded:
              value:
                error:
                  code: rate_limit_exceeded
                  message: The rate limit has been exceeded.
                  request_id: req_demo_001
    InternalError:
      description: The request could not be completed safely.
      headers:
        Brightalk-Version:
          $ref: '#/components/headers/Brightalk-Version'
        X-Request-Id:
          $ref: '#/components/headers/X-Request-Id'
        RateLimit-Limit:
          $ref: '#/components/headers/RateLimit-Limit'
        RateLimit-Remaining:
          $ref: '#/components/headers/RateLimit-Remaining'
        RateLimit-Reset:
          $ref: '#/components/headers/RateLimit-Reset'
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorEnvelope'
          examples:
            internalError:
              value:
                error:
                  code: internal_error
                  message: An unexpected error occurred.
                  request_id: req_demo_001
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: Brightalk API key
      description: Use a server-side Brightalk API key in the Authorization header.

````