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

# Get trace by run id

> Resolves a trace from an agent run id.



## OpenAPI

````yaml https://api.uselemma.ai/openapi.json get /traces/by-run-id
openapi: 3.1.0
info:
  title: Lemma Platform API
  description: Lemma Platform HTTP API for AI observability and workspace operations.
  version: 0.1.0
servers:
  - url: https://api.uselemma.ai
    description: Lemma production API
security:
  - bearerAuth: []
paths:
  /traces/by-run-id:
    get:
      tags:
        - Traces
      summary: Get trace by run id
      description: Resolves a trace from an agent run id.
      operationId: get_trace_by_run_id
      parameters:
        - name: run_id
          in: query
          required: false
          description: Agent run id.
          schema:
            type: string
      responses:
        '200':
          description: Trace
          content:
            application/json:
              schema:
                type: object
                properties:
                  id:
                    type: string
                  project_id:
                    type: string
                  service_name:
                    type:
                      - string
                      - 'null'
                  created_at:
                    type:
                      - string
                      - 'null'
                    format: date-time
                  updated_at:
                    type:
                      - string
                      - 'null'
                    format: date-time
                  otel_trace_id:
                    type: string
                  ready:
                    type: boolean
                required:
                  - id
                  - project_id
                  - service_name
                  - created_at
                  - updated_at
                  - otel_trace_id
                  - ready
                additionalProperties: true
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                type: object
                properties:
                  detail:
                    type: string
                required:
                  - detail
                additionalProperties: false
        '404':
          description: Not found
          content:
            application/json:
              schema:
                type: object
                properties:
                  detail:
                    type: string
                required:
                  - detail
                additionalProperties: false
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer

````