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

# List contract violations detected for a trace

> Return all contract violations persisted for this trace.

Returns an empty list (not 404) for traces that exist but had no
violations detected. Returns 404 only when the trace ID itself doesn't
exist or belongs to another org.



## OpenAPI

````yaml /openapi.json get /api/v1/traces/{trace_id}/violations
openapi: 3.1.0
info:
  title: DecimalAI Platform
  description: Agent Dataset Lifecycle Platform — Backend API
  version: 0.1.0
servers: []
security:
  - BearerAuth: []
tags:
  - name: traces
    description: >-
      Ingest, search, and inspect agent execution traces. A trace is the atomic
      unit of the platform — every other feature (evaluation, compatibility
      scoring, dataset building) operates on traces. Each trace is auto-tagged
      with the manifest hash of the agent that produced it.
  - name: eval-scores
    description: >-
      Push, fetch, and aggregate per-trace evaluation scores. Scores carry
      source provenance (built-in, DeepEval, LangSmith, custom) and feed the
      unified decision engine, which produces a keep / repair / replay / drop
      verdict per trace.
  - name: skills
    description: >-
      Manage reusable instruction blocks (SKILL.md files) that modify agent
      behavior. Skills are first-class manifest components — changes to a skill
      appear in your regression-check impact reports. Use these endpoints to
      create, version, fork, and sync skills with your local SKILL.md files.
  - name: manifests
    description: >-
      Register and inspect manifest versions. A manifest is a snapshot of your
      agent's structural identity (tools, prompts, models, skills) at a point in
      time. The SDK registers manifests automatically; these endpoints expose
      the underlying records.
  - name: datasets
    description: >-
      Build versioned SFT/DPO training datasets from manifest-classified,
      eval-scored traces. Datasets are reproducible — each version locks the
      manifest and filter set used to build it. Export as JSONL, Parquet, or
      push to HuggingFace Hub.
  - name: replay
    description: >-
      Re-execute historical traces against a new manifest version. Replay is the
      deferred-future capability for behavioral verification of agent changes.
      The SDK creates a replay batch, your worker executes each task, then
      submits results back here for eval scoring.
  - name: registry
    description: >-
      Browse and install community skills from the public skills registry. Each
      registry skill carries a SkillScore — an evidence-tiered quality composite
      computed from real-world evals, benchmarks, and ratings across
      organizations. Installing creates a fork in your org — edits don't affect
      the public version.
  - name: agents
    description: >-
      List and inspect agents, plus their multi-agent topology (orchestrator →
      sub-agent edges discovered from traces). Agents are identified by a stable
      agent_name string set in your SDK init() call.
  - name: import
    description: >-
      Bulk-import historical traces from another observability platform or a
      JSONL backup. Useful for migrating from LangSmith / Braintrust / Langfuse.
      Duplicate trace IDs are silently skipped — re-running an import is safe.
paths:
  /api/v1/traces/{trace_id}/violations:
    get:
      tags:
        - contract-violations
      summary: List contract violations detected for a trace
      description: |-
        Return all contract violations persisted for this trace.

        Returns an empty list (not 404) for traces that exist but had no
        violations detected. Returns 404 only when the trace ID itself doesn't
        exist or belongs to another org.
      operationId: list_trace_violations_api_v1_traces__trace_id__violations_get
      parameters:
        - name: trace_id
          in: path
          required: true
          schema:
            type: string
            title: Trace Id
        - name: Authorization
          in: header
          required: false
          schema:
            type: string
            title: Authorization
        - name: decimal_session
          in: cookie
          required: false
          schema:
            anyOf:
              - type: string
              - type: 'null'
            title: Decimal Session
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                type: object
                additionalProperties: true
                title: >-
                  Response List Trace Violations Api V1 Traces  Trace Id 
                  Violations Get
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
components:
  schemas:
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
    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:
    BearerAuth:
      type: http
      scheme: bearer
      description: Enter your API key (e.g. dai_sk_test_key_001)

````