---
title: "Create an evaluator"
method: POST
path: "/v1/evaluators"
tags: ["evals", "evals"]
---

# Create an evaluator

`POST /v1/evaluators`

## Request body

- EvaluatorCreate
  - `name` string, required
  - `description` string, nullable
  - `owner` string, nullable
  - `status` 'active' | 'inactive' | 'archived'
  - `config` object
  - `prompt` string, nullable
  - `threshold` number, nullable
  - `severity` 'info' | 'low' | 'medium' | 'high' | 'critical'
  - `judge_model_override` string, nullable
  - `kind` 'model_judge' | 'deterministic'
  - `format` 'boolean' | 'enum' | 'numeric' | 'score'
  - `tags` string[]

## Response `201`

Successful Response

- EvaluatorResponse
  - `id` string, uuid, required
  - `organization_id` string, uuid, required
  - `name` string, required
  - `kind` string, required
  - `format` string, required
  - `description` string, nullable, required
  - `owner` string, nullable, required
  - `status` string, required
  - `config` object
  - `prompt` string, nullable, required
  - `threshold` number, nullable, required
  - `severity` string, required
  - `judge_model_override` string, nullable, required
  - `tags` string[]
  - `created_by` string, uuid, nullable
  - `created_at` string, date-time, required
  - `updated_at` string, date-time, required

## Other responses

- `400` — Bad request
- `401` — Authentication required
- `422` — Validation Error

---

[API](https://skmtc.net/oneloop-hq/apis/feather-api.md) · [All operations](https://skmtc.net/oneloop-hq/apis/feather-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/oneloop-hq/feather-api/versions/888bdd5c076e/schema)