---
title: "Issue an initial short-lived environment credential after device proof"
method: POST
path: "/api/v1/agent-environments/{environmentId}/credentials"
tags: ["Agent environments"]
---

# Issue an initial short-lived environment credential after device proof

`POST /api/v1/agent-environments/{environmentId}/credentials`

## Path parameters

- `environmentId` string, required

## Request body

- object
  - `protocolVersion` 1, required
  - `proofChallenge` string, required
  - `signature` string, required

## Response `200`

Successful response. Stable response schemas are documented in workflow guides when available.

- unknown

## Other responses

- `400` — Invalid request.
- `401` — Missing or invalid authentication.
- `500` — Unexpected server error.

## Changes

- **2026-08-27** `e9bf9a73b28a` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/layernorm/apis/overlay-web-api/changes/api/v1/agent-environments/:environmentId/credentials/post.md)

---

[API](https://skmtc.dev/layernorm/apis/overlay-web-api.md) · [All operations](https://skmtc.dev/layernorm/apis/overlay-web-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/layernorm/overlay-web-api/revisions/a64546f5bde3/schema)