---
title: "Apply space runtime changes"
method: POST
path: "/v1/spaces/{spaceId}/apply"
tags: ["Spaces"]
---

# Apply space runtime changes

`POST /v1/spaces/{spaceId}/apply`

## Request

- Base URL: `https://api.spacefast.com`
- URL: `https://api.spacefast.com/v1/spaces/{spaceId}/apply`
- Auth: one of:
  - HTTP bearer
  - HTTP bearer

Applies the space's desired runtime changes to the live runtime. Applies inline where it can and answers with the resulting apply state; when work remains, `operation` is the handle to poll at `GET /v1/operations/{operationId}`.

## Path parameters

- `spaceId` string, required

## Response `200`

Response for status 200

- object
  - `$schema` string, uri: Canonical JSON Schema URL for this response body. The server also sends it in the `Link: rel="describedby"` response header.
  - `data` object, required
    - `status` 'live' | 'pending' | 'applying' | 'failed', required: `live` when the runtime matches the desired state, `pending` when a change is waiting to be applied, `applying` while an apply is running, `failed` when the last apply failed.
    - `desiredRevision` string, nullable, required: Version the space wants to serve; null when nothing is pending.
    - `appliedRevision` string, nullable, required: Version the runtime is serving now.
    - `lastError` string, nullable, required: Why the last apply failed; null unless `status` is `failed`.
    - `canApplyNow` boolean, required: Whether an apply would do something right now, for gating an Apply control.
  - `operation` object, nullable, required: Background operation handle when asynchronous work remains after this mutation; null when it completed synchronously.
    - `id` string, required
    - `kind` string, required
    - `status` 'queued' | 'running' | 'succeeded' | 'failed' | 'canceled', required
    - `resources` object[], required
      - `type` string, required
      - `id` string, required
    - `progress` object
      - `total` integer, required
      - `completed` integer, required
      - `failed` integer, required
    - `diagnostics` object[]
      - `code` string, required: Stable snake_case diagnostic code naming the public contract that produced it.
      - `severity` 'info' | 'warning' | 'error', required: How actionable the diagnostic is.
      - `message` string, required: Human-readable explanation with enough detail to act on.
      - `path` string, nullable: Artifact path the diagnostic points at, for example "_headers:12", when one exists.
      - `provider` 'infra' | 'dns' | 'registrar' | 'runtime', nullable: Upstream system the diagnostic originated from, when not Spacefast itself.
      - `details` object, nullable: Machine-readable context for the diagnostic code.
      - `fix` string, nullable: Concrete, agent-actionable remediation hint, when one can be derived.
      - `retryable` boolean, nullable: Whether retrying the same operation can resolve this diagnostic without the caller changing anything.
    - `createdAt` string, date-time, required
    - `finishedAt` string, date-time

## Other responses

- `default`: Problem details (RFC 9457). Any 4xx/5xx response is one `application/problem+json` document.

---

[API](https://skmtc.dev/spacefast/apis/spacefast-api.md) · [All operations](https://skmtc.dev/spacefast/apis/spacefast-api/llms.txt) · [OpenAPI document](https://skmtc.dev/spacefast/apis/spacefast-api/revisions/bd165bc7c983?raw)