> ## Documentation Index > Fetch the complete documentation index at: https://docs.superlog.sh/llms.txt > Use this file to discover all available pages before exploring further. # Get a synthetic check > Returns a synthetic check. Secret header values are not returned. ## OpenAPI ````yaml /api-reference/openapi.json get /synthetic-checks/{checkId} openapi: 3.1.0 info: description: >- Manage a Superlog workspace's automations, runs, tag mode, model access, and secrets, read its telemetry, build dashboards and alerts over it, run synthetic checks, and export them to Terraform. Every request acts as the member who created the API key. title: Superlog management API version: 1.0.0 servers: - url: https://superlog.sh/api/v1 security: - bearerAuth: [] tags: - description: Connected integrations and the IDs automations and tag mode use. name: Integrations - description: The workspace and its members. name: Workspace - description: Keys that authenticate the management API and MCP server. name: API keys - description: Create and change automations. name: Automations - description: Start, follow, and cancel automation runs. name: Runs - description: What Superlog can use and change when someone mentions it in Slack. name: Tag mode - description: Model API keys, subscriptions, and available models. name: Models - description: Credentials agents can use without seeing them. name: Secrets - description: Read the workspace's logs, traces, and metrics. name: Telemetry - description: >- Exceptions in the workspace's telemetry, grouped into issues by fingerprint. name: Errors - description: Create and change dashboards over the workspace's telemetry. name: Dashboards - description: Threshold alerts on the workspace's telemetry that post to Slack. name: Alerts - description: HTTP checks that request a URL on a schedule and post failures to Slack. name: Synthetics - description: Configuration for the superloglabs/superlog Terraform provider. name: Terraform paths: /synthetic-checks/{checkId}: get: tags: - Synthetics summary: Get a synthetic check description: Returns a synthetic check. Secret header values are not returned. operationId: get_synthetic_check parameters: - description: Synthetic check ID. in: path name: checkId required: true schema: type: string format: uuid description: Synthetic check ID. responses: '200': content: application/json: schema: type: object properties: check: type: object properties: assertions: type: array items: type: object properties: key: type: string kind: type: string enum: - status_code - response_time - header - body - json_path - certificate_expiry op: type: string enum: - eq - neq - lt - gt - contains - not_contains - exists - not_exists severity: type: string enum: - critical - degraded value: type: string required: - kind - op - severity - value additionalProperties: false body: anyOf: - type: string - type: 'null' createdAt: type: string enabled: type: boolean failuresToAlert: type: integer followRedirects: type: boolean headers: type: array items: type: object properties: name: type: string secret: type: boolean value: type: string required: - name - secret - value additionalProperties: false description: A secret header's value is always empty. id: type: string format: uuid description: Synthetic check ID. intervalSeconds: type: integer lastRunAt: anyOf: - type: string - type: 'null' lastStatus: anyOf: - type: string enum: - passed - degraded - failed - type: 'null' method: type: string enum: - GET - HEAD - POST - PUT - PATCH - DELETE - OPTIONS name: type: string retries: type: integer slack: anyOf: - type: object properties: channelId: type: string integrationAccountId: type: string required: - channelId - integrationAccountId additionalProperties: false - type: 'null' statusSince: anyOf: - type: string - type: 'null' description: When the check reached its last status. timeoutMs: type: integer updatedAt: type: string url: type: string webUrl: type: string format: uri description: The check in Superlog. required: - assertions - body - createdAt - enabled - failuresToAlert - followRedirects - headers - id - intervalSeconds - lastRunAt - lastStatus - method - name - retries - slack - statusSince - timeoutMs - updatedAt - url - webUrl additionalProperties: false required: - check additionalProperties: false description: OK '400': content: application/json: schema: $ref: '#/components/schemas/Error' description: The request is invalid. `issues` lists each invalid field. '401': content: application/json: schema: $ref: '#/components/schemas/Error' description: The API key is missing, revoked, or its creator left the workspace. '404': content: application/json: schema: $ref: '#/components/schemas/Error' description: >- The resource does not exist in this workspace, or the feature it belongs to is not enabled. security: - bearerAuth: [] components: schemas: Error: type: object properties: code: description: A stable machine-readable error code, when there is one. type: string error: type: string description: What went wrong. issues: description: Validation problems, one per invalid field. type: array items: type: object properties: message: type: string path: type: array items: anyOf: - type: string - type: number required: - message - path additionalProperties: false required: - error additionalProperties: false securitySchemes: bearerAuth: description: A workspace API key, created in Superlog under Settings → API keys. scheme: bearer type: http ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.