Authentication
Send an API key as a bearer token. This endpoint does not state a specific permission in the specification, so give your key the least it needs and check the response rather than assuming.
This endpoint takes no organisation id. Your key already identifies the organisation it belongs to, and the response is scoped to it.
Try it
Replace anything in angle brackets with your own values, and the key placeholder with a key from your dashboard.
curl -X POST https://api.zinndigital.com/v1/fleet/register \
-H "Authorization: Bearer zdk_live_…" \
-H "Content-Type: application/json" \
-d '{ "instance_id": <string> }'Signed in? The API console in your dashboard fills in your real organisation id and your own key, and runs the request against the live API so you can see the actual response. Open this endpoint in the API console
Details
Called once when a worker-host agent starts. **Idempotent**, and structurally incapable of creating a fleet row: the host is the credential's foreign-key target, so re-registering converges the same row, and a re-register after the host was deleted cannot resurrect it (the delete cascaded the credential away, so the request no longer authenticates). **Registration does not make the box placeable.** It writes no status, no `acceptsDeploys` and no heartbeat stamp — a box that registers and then dies is still `provisioning` with a null heartbeat, and its declared capacity still counts zero toward placeable capacity. Promotion happens on the first *heartbeat*. The request carries only what a box can honestly observe about itself. There is deliberately no capacity/region/pool/driver/`acceptsDeploys` field: those are operator facts set with `manage.py register_worker_host`, and a box that could declare `capacity=100000, pool=pbn` would pull every new PBN site onto itself.
Request body
| Name | Type | Required | What it is |
|---|---|---|---|
instance_id | string | Yes | This **process's** identity (machine/container name) — not the host's. The host's name is read off the credential and is not accepted from the caller. |
agent_version | string | No | — |
python_version | string | No | — |
platform | string | No | — |
boot_id | string | No | `/proc/sys/kernel/random/boot_id`. Distinguishes "the agent restarted" from "the box rebooted" — a crash loop from a kernel panic. |
observed_address | string | No | The address this box believes it answers on. **Advisory only**: recorded on the registration audit row so an operator can compare it with the operator-set origin address, and ne… |
Response
| Name | Type | Required | What it is |
|---|---|---|---|
worker_id | string | No | — |
hostname | string | No | — |
status | string<provisioning, active, draining, down, decommissioned> | No | — |
accepts_deploys | boolean | No | — |
region | string | No | — |
pool | string | No | — |
driver | string | No | — |
capacity | integer | No | — |
product_lines | string[] | No | — |
heartbeat_interval_seconds | integer | No | How often to heartbeat, decided engine-side. The box no longer reads its own interval from an env file, so "the host-down window is ten missed beats" stays a fact about the depl… |
Errors this endpoint can return
401 · 422 · 429