---
title: "Daemon startup handshake"
method: POST
path: "/api/daemons/{id}/startup"
tags: ["Daemons", "internal"]
---

# Daemon startup handshake

`POST /api/daemons/{id}/startup`

Internal endpoint for daemons to report their version on startup.
Updates the daemon's version and last_seen timestamp, returns server capabilities.

## Path parameters

- `id` string, uuid, required

## Request body

- DaemonStartupRequest — Sent by daemon on startup to report version
  - `daemon_version` string, required — Daemon software version (semver format)

## Response `200`

Startup acknowledged

- ApiResponseServerCapabilities
  - `data` object — Server capabilities returned on startup/registration
    - `deprecation_warnings` DeprecationWarning[] — Deprecation warnings for the daemon
      - `message` string, required — What the operator needs to do, and by when.
      - `severity` 'Info' | 'Warning' | 'Critical' | 'Unknown', required — Severity level for deprecation warnings
      - `sunset_date` string, nullable — Date after which this daemon version stops being supported.
    - `minimum_daemon_version` string, required — Minimum daemon version supported by this server
    - `server_version` string, required — Server software version
  - `error` string, nullable — Human-readable failure message. Omitted on success.
  - `meta` ApiMeta, required — API metadata included in all responses
    - `api_version` integer, required — API version (integer, increments on breaking changes)
    - `server_version` string, required — Server version (semver)
  - `success` boolean, required — `true` when the request succeeded. `false` responses carry `error` instead of `data`.

## Other responses

- `404` — Daemon not found

---

[API](https://skmtc.net/scanopy/apis/scanopy-api.md) · [All operations](https://skmtc.net/scanopy/apis/scanopy-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/scanopy/scanopy-api/versions/28e466341947/schema)