---
title: "Create Evaluator"
method: POST
path: "/evaluators/"
tags: ["Evaluators"]
---

# Create Evaluator

`POST /evaluators/`

Create an evaluator artifact, its first variant, and its initial revision.

Use this endpoint when you already know you want to manage the
artifact / variant / revision layers independently. For a
one-shot "create and forget" call that returns a flat record,
see `POST /simple/evaluators/`. See the Versioning guide for
commit semantics.

## Query parameters

- `evaluator_id` string, uuid, nullable

## Request body

- EvaluatorCreateRequest — Body for creating an evaluator artifact. Creating an evaluator also provisions its first variant and its initial revision. The evaluator shares the artifact / variant / revision model used across versioned resources — see the Versioning guide.
  - `evaluator` EvaluatorCreate, required
    - `folder_id` string, uuid, nullable
    - `flags` EvaluatorFlags — Legacy full evaluator flag set.
      - `is_application` boolean
      - `is_evaluator` boolean
      - `is_snippet` boolean
      - `is_managed` boolean
      - `is_custom` boolean
      - `is_llm` boolean
      - `is_hook` boolean
      - `is_code` boolean
      - `is_match` boolean
      - `is_feedback` boolean
      - `is_agent` boolean
      - `is_skill` boolean
      - `is_chat` boolean
      - `has_url` boolean
      - `has_script` boolean
      - `has_handler` boolean
      - `is_static` boolean
    - `tags` object, nullable
    - `meta` object, nullable
    - `name` string, nullable
    - `description` string, nullable
    - `slug` string, nullable

## Response `200`

Successful Response

- EvaluatorResponse — Envelope for a single evaluator response.
  - `count` integer — 1 when an evaluator is returned, 0 otherwise.
  - `evaluator` Evaluator
    - `folder_id` string, uuid, nullable
    - `flags` EvaluatorArtifactFlags
      - `is_application` boolean
      - `is_evaluator` boolean
      - `is_snippet` boolean
    - `tags` object, nullable
    - `meta` object, nullable
    - `name` string, nullable
    - `description` string, nullable
    - `created_at` string, date-time, nullable
    - `updated_at` string, date-time, nullable
    - `deleted_at` string, date-time, nullable
    - `created_by_id` string, uuid, nullable
    - `updated_by_id` string, uuid, nullable
    - `deleted_by_id` string, uuid, nullable
    - `slug` string, nullable
    - `id` string, uuid, nullable

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.net/agenta-ai/apis/agenta-api.md) · [All operations](https://skmtc.net/agenta-ai/apis/agenta-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/agenta-ai/agenta-api/versions/ea6421d829f1/schema)