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

# Dry-run trace a mapping over one sample input line — the value at every AST path.



## OpenAPI

````yaml POST /v1/furnishing/mapping/trace
openapi: 3.1.0
info:
  title: SOLO Network API
  version: v1
servers:
  - url: https://api.solo.one
    description: Production
  - url: https://api.sandbox.solo.one
    description: Sandbox
security: []
paths:
  /v1/furnishing/mapping/trace:
    post:
      tags:
        - Furnishing — Mapping Dry-Run
      summary: >-
        Dry-run trace a mapping over one sample input line — the value at every
        AST path.
      operationId: mapping_trace_v1_furnishing_mapping_trace_post
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/MappingTraceRequest'
        required: true
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MappingTraceResponse'
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
      security:
        - HTTPBearer: []
components:
  schemas:
    MappingTraceRequest:
      properties:
        mapping:
          additionalProperties: true
          type: object
          title: Mapping
          description: The mapping/1 document to evaluate.
        roots:
          additionalProperties: true
          type: object
          title: Roots
          description: alias -> source-dialect schema for the mapping's roots.
        input:
          additionalProperties: true
          type: object
          title: Input
          description: alias -> value sample input line.
        target:
          anyOf:
            - {}
            - type: 'null'
          title: Target
          description: 'Target anchor: $id string, inline document, or null.'
      type: object
      required:
        - mapping
        - roots
        - input
      title: MappingTraceRequest
    MappingTraceResponse:
      properties:
        result:
          title: Result
        trace:
          items:
            $ref: '#/components/schemas/MappingTraceEvent'
          type: array
          title: Trace
      type: object
      required:
        - trace
      title: MappingTraceResponse
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
    MappingTraceEvent:
      properties:
        ast_path:
          type: string
          title: Ast Path
        element_indices:
          items:
            type: integer
          type: array
          title: Element Indices
        result:
          title: Result
      type: object
      required:
        - ast_path
        - element_indices
      title: MappingTraceEvent
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
              - type: string
              - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
        input:
          title: Input
        ctx:
          type: object
          title: Context
      type: object
      required:
        - loc
        - msg
        - type
      title: ValidationError
  securitySchemes:
    HTTPBearer:
      type: http
      scheme: bearer

````

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