---
title: "Introspect access token"
method: POST
path: "/v6/auth/introspect"
tags: ["OAuth"]
---

# Introspect access token

`POST /v6/auth/introspect`

Inspect an access token to determine its validity and metadata.

Returns token claims including active status, subject, expiration, and scopes.
Authenticate using HTTP Basic auth (`client_secret_basic`)

## Response `200`

Token introspection result

- object
  - `active` boolean, required — Whether the token is currently active and valid.
  - `sub` string — Subject identifier — the user or client the token was issued to.
  - `client_id` string — The client ID associated with the token.
  - `exp` integer — Unix timestamp indicating when the token expires.
  - `iat` integer — Unix timestamp indicating when the token was issued.
  - `scope` string — Space-separated list of scopes granted to the token.
  - `token_type` string

---

[API](https://skmtc.net/tight/apis/tight-api.md) · [All operations](https://skmtc.net/tight/apis/tight-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/tight/tight-api/revisions/e9f0790a89af/schema)