---
title: "Check a relation tuple"
method: POST
path: "/check"
tags: ["read"]
---

# Check a relation tuple

`POST /check`

To learn how relation tuples and the check works, head over to [the documentation](../concepts/relation-tuples.mdx).

## Request body

- RelationQuery
  - `namespace` string, required — Namespace of the Relation Tuple
  - `object` string — Object of the Relation Tuple
  - `relation` string — Relation of the Relation Tuple
  - `subject_id` string — SubjectID of the Relation Tuple Either SubjectSet or SubjectID can be provided.
  - `subject_set` SubjectSet
    - `namespace` string, required — Namespace of the Subject Set
    - `object` string, required — Object of the Subject Set
    - `relation` string, required — Relation of the Subject Set

## Response `200`

getCheckResponse

- GetCheckResponse — The content of the allowed field is mirrored in the HTTP status code.
  - `allowed` boolean, required — whether the relation tuple is allowed

## Other responses

- `400` — The standard error format
- `403` — getCheckResponse
- `500` — The standard error format

## Changes

- **2021-10-07** `e90046dbd055` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/ory/apis/ory-keto-api/changes/check/post.md)

---

[API](https://skmtc.dev/ory/apis/ory-keto-api.md) · [All operations](https://skmtc.dev/ory/apis/ory-keto-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/ory/ory-keto-api/revisions/e90046dbd055/schema)