---
title: "Reserve GPU units on a node for a set of orgs (platform admin)"
method: POST
path: "/v1/nodes/{nodeId}/reservations"
tags: ["Reservations"]
---

# Reserve GPU units on a node for a set of orgs (platform admin)

`POST /v1/nodes/{nodeId}/reservations`

Grants exclusive placement rights over specific GPU units for a term. Reserved units disappear from every other org's catalog and cannot be placed on by them. Overlap with an existing reservation is rejected atomically.

## Path parameters

- `nodeId` string, required

## Request body

- CreateNodeReservationRequest
  - `allowedOrgIds` string[], required — The audience. The platform ops org is added automatically so we can validate the node.
  - `contractRef` string
  - `endsAt` string — Omit for open-ended
  - `managingOrgIds` string[] — Orgs allowed to release, reclaim, and terminate spot workloads on these units on the owner's behalf. Omit unless a second org manages this capacity commercially.
  - `reason` string
  - `startsAt` string — Defaults to now
  - `unitIds` string[], required — GPU unit ids to reserve (from the node's inventory). Must be vfio-group units.

## Response `200`

Created

- NodeReservation — Exclusive placement rights for a set of orgs over specific GPU units of one node, for a term. Scoped to units, not GPU counts, because units are the indivisible allocation primitive.
  - `allowedOrgIds` string[], required — The audience: orgs that may place workloads on the reserved units.
  - `contractRef` string
  - `createdAt` string
  - `endsAt` string — Absent = open-ended until cancelled
  - `id` string, required
  - `managingOrgIds` string[] — Orgs that may release these units to the market, reclaim them, and terminate the spot workloads on them, on the node owner's behalf. Being in the audience does not confer this.
  - `nodeId` string, required
  - `reason` string
  - `releasedUnitIds` string[] — The subset of reservedUnitIds currently on the spot market (double sell). Still this reservation's capacity, sellable to anyone at tier=spot only, and reclaimable at any time.
  - `reservedUnitIds` string[], required
  - `skipped` string[] — Reclaim only: VM ids left running because they are not spot.
  - `startsAt` string, required
  - `status` 'pending' | 'active' | 'expired' | 'cancelled' | 'needs-review', required — needs-review means the node's GPU topology changed under the reservation: it grants nothing (and withholds its units from everyone) until an operator re-affirms it.
  - `terminated` string[] — Reclaim only: spot VM ids terminated to free the reclaimed units.
  - `topologyGen` integer — Node topology generation this reservation was written against
  - `updatedAt` string
  - `wouldSkip` string[] — Reclaim dry run only: VM ids that would be left running.
  - `wouldTerminate` string[] — Reclaim dry run only: the spot VM ids this call would terminate.

## Other responses

- `400` — The request is invalid
- `401` — Missing or invalid API key
- `403` — API key lacks the required scope
- `404` — Resource not found
- `409` — The request conflicts with existing state

---

[API](https://skmtc.net/openrelay/apis/openrelay-api.md) · [All operations](https://skmtc.net/openrelay/apis/openrelay-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/openrelay/openrelay-api/revisions/138b4ef69d2f/schema)