---
title: "Execute faithfulness evaluator"
method: POST
path: "/v2/evaluators/faithfulness/execute"
tags: ["evaluators"]
---

# Execute faithfulness evaluator

`POST /v2/evaluators/faithfulness/execute`

Check if a completion is faithful to the provided context

**Request Body:**
- `input.completion` (string, required): The LLM completion to check for faithfulness
- `input.context` (string, required): The context that the completion should be faithful to
- `input.question` (string, required): The original question asked

## Request body

- RequestFaithfulnessRequest
  - `input` RequestFaithfulnessInput, required
    - `completion` string, required
    - `context` string, required
    - `question` string, required

## Response `200`

OK

- ResponseFaithfulnessResponse
  - `is_faithful` boolean

## Other responses

- `400` — Bad Request
- `500` — Internal Server Error

---

[API](https://skmtc.net/traceloop/apis/traceloop-api.md) · [All operations](https://skmtc.net/traceloop/apis/traceloop-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/traceloop/traceloop-api/versions/9c12a04a5947/schema)