> ## Documentation Index > Fetch the complete documentation index at: https://docs.agentmark.co/llms.txt > Use this file to discover all available pages before exploring further. # Roll back an environment > Rolls this environment back to a prior pinned version (FR-018..FR-023). `target_version` must name a successful forward-promote deployment row on this env — rollback re-runs the deployment at that row's `commit_sha`. Rollback is a promote at an older commit: it writes a fresh env-keyed snapshot, commits the env pointer, and dispatches the build. Returns 202 with the created `deployment` row; poll `GET /v1/deployments/{deployment_id}` to watch the build complete. Feature-gated: while the `enable_env_rollback` flag is OFF for the caller's tenant this route responds `404` as if it did not exist. ## OpenAPI ````yaml /openapi.yaml post /v1/environments/{id}/rollback openapi: 3.0.3 info: contact: email: hello@agentmark.co url: https://docs.agentmark.co description: >- The AgentMark Gateway API lets you ingest traces, create scores, and retrieve prompt templates programmatically. Most developers should use the [AgentMark SDK](/introduction/overview) for integration. The REST API is for cases where you need direct HTTP access or are building a custom integration. Versioning: every endpoint is prefixed with `/v1/`. Breaking changes ship under a new version prefix (`/v2/`, etc.) with a 90-day-minimum deprecation window — see [API versioning & stability](/api-reference/versioning) for the full policy on what constitutes a breaking vs. additive change. title: AgentMark Gateway API version: '1.0' servers: - description: Production (AgentMark Cloud) url: https://api.agentmark.co - description: Local dev server (`npx @agentmark-ai/cli dev`) url: http://localhost:9418 security: - AppId: [] BearerAuth: [] tags: - description: Ingest, query, and export OpenTelemetry trace data. name: Traces - description: >- Coding-agent session ingest (outerlayer sync) and content-addressed session images. name: Agents - description: Query individual spans across traces. name: Spans - description: Create, retrieve, list, and delete score records for spans and traces. name: Scoring - description: Structured-filter search across observability resources. name: Search - description: Retrieve the effective synced project configuration. name: Config - description: List and retrieve datasets. name: Datasets - description: Query server feature availability. name: Capabilities - description: Per-model LLM pricing data. Public, unauthenticated. name: Pricing - description: >- Create, list, and revoke tenant API keys. Plaintext returned exactly once at creation. name: API Keys - description: >- List and retrieve score configuration definitions from the synced project config. name: Score Configs - description: >- Trigger and inspect managed deployments. POST returns 202; deployments run asynchronously and progress is observed via GET. name: Deployments - description: >- Per-app named environments (e.g. `dev`, `prod`). CRUD for env lifecycle; promote/rollback routes land alongside in this group as feature 054 lands the saga. name: Environments - description: >- App CRUD — the top-level tenant entity every other resource hangs off. Lets a headless agent provision an app without the dashboard. name: Apps - description: Service health checks. name: Health paths: /v1/environments/{id}/rollback: post: tags: - Environments summary: Roll back an environment description: >- Rolls this environment back to a prior pinned version (FR-018..FR-023). `target_version` must name a successful forward-promote deployment row on this env — rollback re-runs the deployment at that row's `commit_sha`. Rollback is a promote at an older commit: it writes a fresh env-keyed snapshot, commits the env pointer, and dispatches the build. Returns 202 with the created `deployment` row; poll `GET /v1/deployments/{deployment_id}` to watch the build complete. Feature-gated: while the `enable_env_rollback` flag is OFF for the caller's tenant this route responds `404` as if it did not exist. operationId: rollback-environment parameters: - in: path name: id required: true schema: format: uuid type: string requestBody: content: application/json: schema: properties: note: maxLength: 2000 type: string target_version: exclusiveMinimum: true minimum: 0 type: integer required: - target_version type: object responses: '202': content: application/json: schema: properties: data: properties: commit_sha: type: string deployment_id: format: uuid type: string deployment_status: enum: - pending - snapshotting - deploying - success - failed type: string env_version: exclusiveMinimum: true minimum: 0 type: integer required: - deployment_id - deployment_status - env_version - commit_sha type: object required: - data type: object description: >- Rollback ran — the snapshot was written, the env pointer was committed, and the build was dispatched. '400': content: application/json: schema: properties: error: properties: code: type: string message: type: string required: - code - message type: object required: - error type: object description: >- Target version is not a valid prior forward-promote success, app has no git connection, or invalid request body. '401': content: application/json: schema: properties: error: properties: code: type: string message: type: string required: - code - message type: object required: - error type: object description: Missing or invalid API key. '403': content: application/json: schema: properties: error: properties: code: type: string message: type: string required: - code - message type: object required: - error type: object description: Caller lacks 'environment.promote' permission. '404': content: application/json: schema: properties: error: properties: code: type: string message: type: string required: - code - message type: object required: - error type: object description: Environment or target version not found. '500': content: application/json: schema: properties: error: properties: code: type: string message: type: string required: - code - message type: object required: - error type: object description: Unexpected failure running the rollback. components: securitySchemes: AppId: description: >- Application ID for tenant scoping. X-Outerlayer-App-Id is accepted as an equivalent header. in: header name: X-Agentmark-App-Id type: apiKey BearerAuth: description: API key (sk_agentmark_*) scheme: bearer type: http ````