> ## 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.

# Search traces (structural)

> Structural search over traces and span attributes. Distinct from evidence search, which searches visible span content.



## OpenAPI

````yaml https://api.uselemma.ai/openapi.json get /traces/search
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/search:
    get:
      tags:
        - Traces
      summary: Search traces (structural)
      description: >-
        Structural search over traces and span attributes. Distinct from
        evidence search, which searches visible span content.
      operationId: search_traces
      parameters:
        - name: project_id
          in: query
          required: true
          description: Project ID.
          schema:
            type: string
        - name: query
          in: query
          required: false
          description: Search query.
          schema:
            type: string
        - name: tool_name
          in: query
          required: false
          description: Tool name filter.
          schema:
            type: string
        - name: model
          in: query
          required: false
          description: Model filter.
          schema:
            type: string
        - name: agent_name
          in: query
          required: false
          description: Agent name filter.
          schema:
            type: string
        - name: has_error
          in: query
          required: false
          description: >-
            Span-error axis. true = only traces with span errors, false = only
            traces without, omitted = unconstrained. Independent of has_issues.
          schema:
            type: boolean
        - name: has_issues
          in: query
          required: false
          description: >-
            Issue axis. true = only traces with issue occurrences, false = only
            traces without, omitted = unconstrained. has_error=false with
            has_issues=true selects silent failures.
          schema:
            type: boolean
        - name: status
          in: query
          required: false
          description: >-
            Deprecated alias for the two axes, comma-separated: failures =
            has_error=true, flagged = has_issues=true, clean = has_error=false
            and has_issues=false. Cannot express error-only or issue-only;
            prefer has_error / has_issues, which override it per axis.
          schema:
            type: string
          deprecated: true
        - name: error_only
          in: query
          required: false
          description: >-
            Restrict the span-level search to error spans. Distinct from
            has_error, which filters whole traces by error count.
          schema:
            type: boolean
        - name: tool_error_only
          in: query
          required: false
          description: >-
            Same-span tool-error filter. Requires tool_name. Matches only traces
            where that tool failed on the same span the Analytics widget
            counted.
          schema:
            type: boolean
        - name: start
          in: query
          required: false
          description: Start timestamp.
          schema:
            type: string
        - name: end
          in: query
          required: false
          description: End timestamp.
          schema:
            type: string
        - name: min_spans
          in: query
          required: false
          description: Minimum span count.
          schema:
            type: string
        - name: max_spans
          in: query
          required: false
          description: Maximum span count.
          schema:
            type: string
        - name: min_duration_ms
          in: query
          required: false
          description: Minimum trace duration (ms).
          schema:
            type: string
        - name: max_duration_ms
          in: query
          required: false
          description: Maximum trace duration (ms).
          schema:
            type: string
        - name: min_tokens
          in: query
          required: false
          description: Minimum total token count.
          schema:
            type: string
        - name: min_thread_traces
          in: query
          required: false
          description: Minimum thread trace count.
          schema:
            type: string
        - name: max_thread_traces
          in: query
          required: false
          description: Maximum thread trace count.
          schema:
            type: string
        - name: attribute_filters
          in: query
          required: false
          description: JSON-serialized span attribute filters.
          schema:
            type: string
        - name: limit
          in: query
          required: false
          description: Maximum number of records to return.
          schema:
            type: integer
            minimum: 1
      responses:
        '200':
          description: Search results
          content:
            application/json:
              schema:
                type: array
                items:
                  type: object
                  properties:
                    id:
                      type: string
                    otel_trace_id:
                      type: string
                    project_id:
                      type: string
                    service_name:
                      type:
                        - string
                        - 'null'
                    timestamp:
                      type: string
                      format: date-time
                    issue_extraction:
                      type:
                        - object
                        - 'null'
                      properties:
                        status:
                          type: string
                          enum:
                            - running
                            - completed
                            - skipped
                            - failed
                        reason:
                          type:
                            - string
                            - 'null'
                          enum:
                            - issues_found
                            - no_issues_found
                            - no_spans
                            - unsupported_trace
                            - error
                            - null
                        issue_count:
                          type:
                            - number
                            - 'null'
                        occurrence_count:
                          type:
                            - number
                            - 'null'
                        completed_at:
                          type:
                            - string
                            - 'null'
                          format: date-time
                      required:
                        - status
                        - reason
                        - issue_count
                        - occurrence_count
                        - completed_at
                      additionalProperties: false
                  required:
                    - id
                    - otel_trace_id
                    - project_id
                    - service_name
                    - timestamp
                    - issue_extraction
                  additionalProperties: false
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                type: object
                properties:
                  detail:
                    type: string
                  code:
                    type: string
                required:
                  - detail
                additionalProperties: false
        '404':
          description: Not found
          content:
            application/json:
              schema:
                type: object
                properties:
                  detail:
                    type: string
                  code:
                    type: string
                required:
                  - detail
                additionalProperties: false
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer

````