---
title: "Activate Host"
method: POST
path: "/admin/hosts/{host_id}/activate"
---

# Activate Host

`POST /admin/hosts/{host_id}/activate`

## Request

- Base URL: `https://api.xhostd.com` (the document declares no server; this is the origin it was published from)
- URL: `https://api.xhostd.com/admin/hosts/{host_id}/activate`
- Auth: none declared

Release a ``commissioning`` host to ``active`` (admin).

One-shot commissioning -> active gate: called by ``add-worker.sh``'s
release step after every post-check passes (xhost-git, the
git-over-SSH hop, negative port scans), and
by the operator via ``xhostctl admin host activate`` if add-worker
died between the token exchange and its release step. No
freshness guard: add-worker step 9 has just verified the heartbeat.

- ``commissioning`` -> ``active`` (OK).
- ``pending`` -> 400: no enrollment yet; run add-worker first.
- ``active`` -> 409: loud on stale re-run rather than a silent
  success (the operator should notice the cell was already
  released).
- ``draining`` / ``quarantined`` -> 400: those are gate-release
  states owned by the reactivate route, not commissioning.

Registers the host's agent in the same transaction, because
``commissioning`` is outside the serving set the boot populator
reads. add-worker.sh normally calls this seconds after the token
exchange registered one, but a control-plane restart in between —
or an operator running `xhostctl admin host activate` later, which
this route exists for — leaves a serving host with no agent.

## Path parameters

- `host_id` string, uuid, required

## Headers

- `authorization` string, nullable

## Response `200`

Successful Response

- object

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/xhostd/apis/xhostd-public.md) · [All operations](https://skmtc.dev/xhostd/apis/xhostd-public/llms.txt) · [OpenAPI document](https://skmtc.dev/xhostd/apis/xhostd-public/revisions/bf439c4d1789?raw)