---
title: "Get subject by external ID"
method: GET
path: "/v1/subjects/external/{externalId}"
tags: ["Subjects"]
---

# Get subject by external ID

`GET /v1/subjects/external/{externalId}`

Looks up a subject by the external identifier in the authenticated application's namespace.

## Path parameters

- `externalId` string, required

## Response `200`

Subject returned

## Other responses

- `401` — Missing or invalid bearer token
- `404` — Subject not found

---

[API](https://skmtc.net/reflexpay/apis/idaas-identity-as-a-service-api.md) · [All operations](https://skmtc.net/reflexpay/apis/idaas-identity-as-a-service-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/reflexpay/idaas-identity-as-a-service-api/revisions/db1f954badfb/schema)