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

# Get Transcript

> Derived coding-agent transcript for a trace: what the agent did, in order, with per-call token and cost economics. Empty entries for traces without coding-agent content.



## OpenAPI

````yaml GET /api/traces/{traceId}/transcript
openapi: 3.1.0
info:
  title: LangWatch API
  version: 1.0.0
  description: LangWatch openapi spec
servers:
  - url: https://app.langwatch.ai
security:
  - project_api_key: []
paths:
  /api/traces/{traceId}/transcript:
    get:
      description: >-
        Derived coding-agent transcript for a trace: what the agent did, in
        order, with per-call token and cost economics. Empty entries for traces
        without coding-agent content.
      operationId: getApiTracesByTraceIdTranscript
      parameters:
        - name: traceId
          in: path
          description: >-
            The trace ID — either the full 32-char ID or a unique prefix (≥ 8
            chars). Prefix lookup is scoped to the authenticated project.
          required: true
          schema:
            type: string
      responses:
        '200':
          description: >-
            The transcript: ordered entries plus per-session totals and
            sub-agent tool counts
          content:
            application/json:
              schema:
                type: object
                properties:
                  agent:
                    type: string
                  sessionId:
                    type:
                      - string
                      - 'null'
                  entries:
                    type: array
                    items:
                      type: object
                      additionalProperties: true
                  totals:
                    type: object
                    properties:
                      modelCalls:
                        type: number
                      toolCalls:
                        type: number
                      tokens:
                        type: number
                      costUsd:
                        type: number
                    required:
                      - modelCalls
                      - toolCalls
                      - tokens
                      - costUsd
                  subAgents:
                    type: array
                    items:
                      type: object
                      additionalProperties: true
                required:
                  - agent
                  - sessionId
                  - entries
                  - totals
                  - subAgents
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                  message:
                    type: string
                required:
                  - error
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                  message:
                    type: string
                required:
                  - error
        '404':
          description: Trace not found
          content:
            application/json:
              schema:
                type: object
                properties:
                  message:
                    type: string
                required:
                  - message
        '409':
          description: Ambiguous trace ID prefix — the prefix matches more than one trace
          content:
            application/json:
              schema:
                type: object
                properties:
                  message:
                    type: string
                  candidateTraceIds:
                    type: array
                    items:
                      type: string
                required:
                  - message
                  - candidateTraceIds
        '422':
          description: Unprocessable Entity
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                  message:
                    type: string
                required:
                  - error
        '500':
          description: Internal Server Error
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                  message:
                    type: string
                required:
                  - error
components:
  securitySchemes:
    project_api_key:
      type: apiKey
      in: header
      name: X-Auth-Token
      description: >-
        Project API key for sending traces and accessing project-scoped
        resources. Format: sk-lw-... (no underscore). Obtain one by creating a
        project via the Admin API or the LangWatch UI.

````