---
title: "Read the active release identity for a tenant host"
method: GET
path: "/_run402/release.json"
tags: ["Stable Hosts"]
---

# Read the active release identity for a tenant host

`GET /_run402/release.json`

## Request

- Base URL: `https://api.run402.com`
- URL: `https://api.run402.com/_run402/release.json`
- Auth: none required

Tenant-host well-known endpoint, served on project subdomains and custom domains before static resolution. Returns the active release identity with Cache-Control: no-store. Not served from api.run402.com.

## Response `200`

Active release identity for this tenant host.

- StableHostReleaseIdentity
  - `project_id` string, required: Run402 project ID. Public IDs are not UUIDs.
  - `release_id` string, required
  - `release_generation` integer, nullable, required
  - `activated_at` string, date-time, nullable, required

## Other responses

- `503`: No active release is currently materialized for this host.

---

[API](https://skmtc.dev/run402/apis/run402-api.md) · [All operations](https://skmtc.dev/run402/apis/run402-api/llms.txt) · [OpenAPI document](https://skmtc.dev/run402/apis/run402-api/revisions/893607557f50?raw)