---
title: "Delete evaluator"
method: DELETE
path: "/v1/platform/evaluators/{evaluator_id}"
tags: ["evaluators"]
---

# Delete evaluator

`DELETE /v1/platform/evaluators/{evaluator_id}`

Delete an evaluator. When delete_run_rules is true, all run rules referencing this evaluator are deleted first (same tenant). Associated llm_evaluators and code_evaluators rows are removed by foreign-key cascade when the evaluator row is deleted.

## Path parameters

- `evaluator_id` string, required

## Query parameters

- `delete_run_rules` boolean

## Response `204`

No Content

## Other responses

- `400` — Bad Request
- `401` — Unauthorized
- `403` — Forbidden
- `404` — Not Found
- `409` — Conflict
- `500` — Internal Server Error

## Changes

- **2026-04-13** `e86be67718ee` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/langchain-ai/apis/langsmith/changes/v1/platform/evaluators/:evaluator_id/delete.md)

---

[API](https://skmtc.dev/langchain-ai/apis/langsmith.md) · [All operations](https://skmtc.dev/langchain-ai/apis/langsmith/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/langchain-ai/langsmith/revisions/a0acb3a6a101/schema)