> ## Documentation Index > Fetch the complete documentation index at: https://docs.parallel.ai/llms.txt > Use this file to discover all available pages before exploring further. # Trigger Monitor Run > Trigger an immediate monitor run. Enqueues a one-off execution of the monitor outside its normal schedule. The monitor's regular schedule is not affected. An event is only emitted if the execution detects a material change. Cancelled monitors cannot be triggered. ## OpenAPI ````yaml /public-openapi.json post /v1/monitors/{monitor_id}/trigger openapi: 3.1.0 info: title: Parallel API description: Parallel API contact: name: Parallel Support url: https://parallel.ai email: support@parallel.ai version: 0.1.2 servers: - url: https://api.parallel.ai description: Parallel API security: - ApiKeyAuth: [] tags: - name: Search description: >- Search returns ranked URLs with extended excerpts suitable for LLM consumption. Inputs are a natural-language objective and optional keyword queries. Source policies allow including or excluding specific domains and have configurable output sizes. The returned extended snippets contain dense, relevant information from relevant pages. - Result: ranked list with URL, title, and long text excerpts - name: Extract description: >- Extract returns excerpts or full content from one or more URLs. Inputs are a list of URLs and an optional search objective and keyword queries. The returned excerpts or full content is formatted as markdown and suitable for LLM consumption. - Result: excerpts or full content from the URL formatted as markdown - name: Tasks description: >- The Task API executes web research and extraction tasks. Clients submit a natural-language objective with an optional input schema; the service plans retrieval, fetches relevant URLs, and returns outputs that conform to a provided or inferred JSON schema. Supports deep research style queries and can return rich structured JSON outputs. Processors trade-off between cost, latency, and quality. Each processor supports calibrated confidences. - Output metadata: citations, excerpts, reasoning, and confidence per field Task Groups enable batch execution of many independent Task runs with group-level monitoring and failure handling. - Submit hundreds or thousands of Tasks as a single group - Observe group progress and receive results as they complete - Real-time updates via Server-Sent Events (SSE) - Add tasks to an existing group while it is running - Group-level retry and error aggregation - name: FindAll description: >- The FindAll API discovers and evaluates entities that match complex criteria from natural language objectives. Submit a high-level goal and the service automatically generates structured match conditions, discovers relevant candidates, and evaluates each against the criteria. Returns comprehensive results with detailed reasoning, citations, and confidence scores for each match decision. Streaming events and webhooks are supported. - name: Monitor description: >- The Monitor API watches the web for material changes on a fixed frequency. Each monitor runs once on creation and then on its configured schedule, emitting events when meaningful changes are detected. - `event_stream` monitors track a search query and emit an event for each new material change. - `snapshot` monitors track a specific task run's output and emit an event when the output changes. Results can be polled via the events endpoint or delivered via webhooks. - name: Chat API (Beta) description: >- The Chat API provides a programmatic chat-style text generation interface. It accepts a sequence of messages and returns model responses. Intended for assistant-like interactions and evaluation. Streaming responses are supported. paths: /v1/monitors/{monitor_id}/trigger: post: tags: - Monitor summary: Trigger Monitor Run description: |- Trigger an immediate monitor run. Enqueues a one-off execution of the monitor outside its normal schedule. The monitor's regular schedule is not affected. An event is only emitted if the execution detects a material change. Cancelled monitors cannot be triggered. operationId: trigger_monitor_run_v1_monitors__monitor_id__trigger_post parameters: - name: monitor_id in: path required: true schema: type: string title: Monitor Id responses: '204': description: Monitor run enqueued. '401': description: 'Unauthorized: invalid or missing credentials' content: application/json: example: type: error error: ref_id: fcb2b4f3-c75e-4186-87bc-caa1a8381331 message: 'Unauthorized: invalid or missing credentials' schema: $ref: '#/components/schemas/ErrorResponse' '404': description: Monitor not found content: application/json: example: type: error error: ref_id: fcb2b4f3-c75e-4186-87bc-caa1a8381331 message: Monitor not found schema: $ref: '#/components/schemas/ErrorResponse' '422': description: 'Unprocessable content: request validation error' content: application/json: example: type: error error: ref_id: fcb2b4f3-c75e-4186-87bc-caa1a8381331 message: 'Unprocessable content: request validation error' schema: $ref: '#/components/schemas/ErrorResponse' x-code-samples: - lang: Python source: |- from parallel import Parallel client = Parallel() client.monitor.trigger("monitor_id") - lang: TypeScript source: |- import Parallel from "parallel-web"; const client = new Parallel(); await client.monitor.trigger('monitor_id'); components: schemas: ErrorResponse: properties: type: type: string const: error title: Type description: Always 'error'. error: $ref: '#/components/schemas/Error' description: Error. type: object required: - type - error title: ErrorResponse description: Response object used for non-200 status codes. Error: properties: ref_id: type: string title: Reference ID description: Reference ID for the error. message: type: string title: Message description: Human-readable message. detail: anyOf: - additionalProperties: true type: object - type: 'null' title: Detail description: Optional detail supporting the error. type: object required: - ref_id - message title: Error description: An error message. securitySchemes: ApiKeyAuth: type: apiKey in: header name: x-api-key ````