---
title: "The Introspection OAuth 2 Endpoint."
method: POST
path: "/restv1/introspection"
tags: ["Token"]
---

# The Introspection OAuth 2 Endpoint.

`POST /restv1/introspection`

The Introspection OAuth 2 Endpoint.

## Headers

- `Authorization` string, required

## Response `200`

OK

- object — meta-information about token
  - `active` boolean, required — Boolean indicator of whether or not the presented token is currently active.
  - `scope` string[] — Provide list of scopes to which access was granted for this resource.
  - `client_id` string — Client identifier for the OAuth 2.0 client that requested this token.
  - `username` string — Human-readable identifier for the resource owner who authorized this token.
  - `token_type` string — Type of the token as defined in Section 5.1 of OAuth 2.0 [RFC6749].
  - `exp` integer — Integer timestamp, measured in the number of seconds since January 1 1970 UTC, indicating when this permission will expire.
  - `iat` integer
  - `sub` string — Subject of the token, as defined in JWT [RFC7519].
  - `aud` string — Service-specific string identifier or list of string identifiers representing the intended audience for this token, as defined in JWT [RFC7519].
  - `iss` string — String representing the issuer of this token, as defined in JWT [RFC7519].
  - `acr_values` string — Authentication Context Class Reference values.
  - `jti` string — String identifier for the token, as defined in JWT.

## Other responses

- `400` — Error codes for introspection endpoint.
- `401` — Unauthorized access request.
- `500` — Internal error occured. Please check log file for details.

## Changes

- **2026-04-08** `e60fb909da19` — 1 info
  - endpoint added
- **2022-03-25** `d6fc0677410c` — 1 breaking
  - api path removed without deprecation

[Change history](https://skmtc.dev/janssenproject/apis/janssen-authorization-server/changes/restv1/introspection/post.md)

---

[API](https://skmtc.dev/janssenproject/apis/janssen-authorization-server.md) · [All operations](https://skmtc.dev/janssenproject/apis/janssen-authorization-server/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/janssenproject/janssen-authorization-server/revisions/2a44b59497de/schema)