---
title: "Refresh authenticated host capabilities"
method: PUT
path: "/api/v1/agent-environments/{environmentId}/capabilities"
tags: ["Agent environments"]
---

# Refresh authenticated host capabilities

`PUT /api/v1/agent-environments/{environmentId}/capabilities`

## Path parameters

- `environmentId` string, required

## Request body

- object
  - `protocolVersion` 1, required
  - `hostVersion` string, required
  - `platform` string, required
  - `adapters` object[], required
    - `id` string, required
    - `displayName` string, required
    - `protocol` 'fake' | 'acp' | 'eve' | 'native', required
    - `version` string
    - `supports` object, required
      - `prompt` boolean, required
      - `approval` boolean, required
      - `cancel` boolean, required
      - `resume` boolean, required
  - `filesystem` union, required
    - object
      - `mode` 'selected_roots', required
      - `roots` string[], required
    - object
      - `mode` 'all_user_files', required
  - `maxConcurrentRuns` integer, 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/capabilities/put.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)