> ## Documentation Index > Fetch the complete documentation index at: https://docs.trysignalbase.com/llms.txt > Use this file to discover all available pages before exploring further. # Add Targets > Add up to 500 targets to a monitor in one request. Each entry may be a company domain or website URL (acme.com, https://www.acme.com/about), a LinkedIn company URL (linkedin.com/company/acme), or a LinkedIn member profile URL (linkedin.com/in/jane-doe — monitors the company that person currently works at). Inputs are normalized (scheme, www., path, and case are stripped) and de-duplicated. The call is idempotent: targets already in the monitor are counted in skipped_existing, not added twice. Entries that are none of the three kinds are returned in invalid and do not fail the request; the request fails with 400 only when no entry is valid, or when it would exceed the team's 1,000-target limit (nothing is added in that case). Targets matched to a known company are resolved immediately; the rest are pending and researched automatically. Free (0 credits). ## OpenAPI ````yaml POST /monitors/{id}/targets openapi: 3.1.0 info: title: Monitoring API description: >- Manage account monitoring over REST. A monitor is a named group of watch targets (company domains, LinkedIn company pages, or LinkedIn member profiles) with its own signal-type selection and an optional webhook endpoint. Create monitors, add and remove targets, change what a monitor listens for, pause it, and delete it. The dashboard Monitoring page calls the same code path, so monitors created in either place are fully manageable from the other. license: name: MIT version: 2.0.0 servers: - url: https://www.trysignalbase.com/api/v2 security: - bearerAuth: [] paths: /monitors/{id}/targets: post: summary: Add Targets description: >- Add up to 500 targets to a monitor in one request. Each entry may be a company domain or website URL (acme.com, https://www.acme.com/about), a LinkedIn company URL (linkedin.com/company/acme), or a LinkedIn member profile URL (linkedin.com/in/jane-doe — monitors the company that person currently works at). Inputs are normalized (scheme, www., path, and case are stripped) and de-duplicated. The call is idempotent: targets already in the monitor are counted in skipped_existing, not added twice. Entries that are none of the three kinds are returned in invalid and do not fail the request; the request fails with 400 only when no entry is valid, or when it would exceed the team's 1,000-target limit (nothing is added in that case). Targets matched to a known company are resolved immediately; the rest are pending and researched automatically. Free (0 credits). operationId: addMonitorTargets parameters: - $ref: '#/components/parameters/MonitorId' requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/TargetsAddRequest' example: targets: - acme.com - https://www.linkedin.com/company/initech/ - https://www.linkedin.com/in/jane-doe/ - not a domain responses: '200': description: Targets processed. added holds only the newly created targets. content: application/json: schema: $ref: '#/components/schemas/TargetsAddResponse' example: success: true data: added: - id: 9530caa4-70c9-49a0-ae3a-dc7f3fe497c3 monitor_id: 29681a72-ed3d-41a8-b119-2c2942b34996 type: domain value: acme.com status: resolved company: id: 0b9f6f0e-2f0c-4a53-9a44-6d2b8a1c7e11 name: Acme slug: acme domain: acme.com industry: Software country: US resolved_at: '2026-09-20T13:10:41.506Z' last_signal_type: funding_round last_signal_at: '2026-09-18T13:08:25.412Z' created_at: '2026-09-20T13:10:41.507Z' - id: f63a838c-4927-43c9-ba73-65fa46edd5c1 monitor_id: 29681a72-ed3d-41a8-b119-2c2942b34996 type: linkedin_company value: linkedin.com/company/initech status: pending company: null resolved_at: null last_signal_type: null last_signal_at: null created_at: '2026-09-20T13:10:41.507Z' - id: 0279e977-424d-410a-b249-59c74038c187 monitor_id: 29681a72-ed3d-41a8-b119-2c2942b34996 type: linkedin_profile value: linkedin.com/in/jane-doe status: pending company: null resolved_at: null last_signal_type: null last_signal_at: null created_at: '2026-09-20T13:10:41.507Z' skipped_existing: 0 invalid: - not a domain pending: - linkedin.com/company/initech - linkedin.com/in/jane-doe resolved_companies: 1 meta: endpoint: monitors.targets.add creditsUsed: 0 '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/Unauthorized' '403': $ref: '#/components/responses/SubscriptionExpired' '404': $ref: '#/components/responses/MonitorNotFound' '429': $ref: '#/components/responses/RateLimited' '500': $ref: '#/components/responses/InternalError' components: parameters: MonitorId: name: id in: path required: true description: The monitor ID. schema: type: string schemas: TargetsAddRequest: type: object required: - targets properties: targets: type: array minItems: 1 maxItems: 500 items: type: string minLength: 1 maxLength: 500 description: >- Company domains or website URLs, LinkedIn company URLs, and/or LinkedIn member profile URLs. Each entry ≤ 500 characters. TargetsAddResponse: type: object required: - success - data - meta properties: success: type: boolean const: true data: type: object required: - added - skipped_existing - invalid - pending - resolved_companies properties: added: type: array items: $ref: '#/components/schemas/Target' description: Targets created by this request. skipped_existing: type: integer minimum: 0 description: Valid entries that were already in the monitor. invalid: type: array items: type: string description: >- Entries (as sent) that are not a domain, LinkedIn company URL, or LinkedIn profile URL. pending: type: array items: type: string description: >- Normalized values of the added targets that are not matched to a company yet. resolved_companies: type: integer minimum: 0 description: Distinct resolved companies in the monitor after this request. meta: $ref: '#/components/schemas/ResponseMeta' Target: type: object required: - id - monitor_id - type - value - status - company - resolved_at - last_signal_type - last_signal_at - created_at properties: id: type: string description: Unique target ID (UUID). monitor_id: type: string type: $ref: '#/components/schemas/TargetType' value: type: string description: >- The normalized identifier: a bare domain (acme.com), linkedin.com/company/, or linkedin.com/in/. status: $ref: '#/components/schemas/TargetStatus' company: oneOf: - $ref: '#/components/schemas/TargetCompany' - type: 'null' description: Matched company; null while pending. resolved_at: type: - string - 'null' format: date-time description: When the target was matched to its company; null while pending. last_signal_type: type: - string - 'null' description: >- Type of the company's most recent signal (any type, not only the monitor's signal_types), or null. last_signal_at: type: - string - 'null' format: date-time description: When that signal occurred, or null. created_at: type: string format: date-time ResponseMeta: type: object required: - endpoint - creditsUsed properties: endpoint: type: string description: Endpoint identifier (e.g. monitors.create). creditsUsed: type: integer minimum: 0 description: >- API credits consumed by this request. Always 0 for the Monitoring API. ErrorResponse: type: object required: - success - error - code properties: success: type: boolean const: false error: type: string description: Human-readable error message. code: type: string enum: - bad_request - invalid_api_key - subscription_expired - not_found - rate_limited - internal_server_error - internal_error retryAfter: type: integer description: >- Seconds until a retry is recommended. Present on rate-limit (429) responses. TargetType: type: string enum: - domain - linkedin_company - linkedin_profile description: How the target was identified when it was added. TargetStatus: type: string enum: - resolved - pending description: >- resolved = matched to a company in the Signalbase database; its signals are delivered. pending = not matched yet; it is researched automatically and re-checked nightly, and delivers nothing until it resolves. TargetCompany: type: object required: - id - name - slug - domain - industry - country description: The company a resolved target was matched to. properties: id: type: string description: Signalbase company ID. name: type: - string - 'null' slug: type: - string - 'null' domain: type: - string - 'null' industry: type: - string - 'null' country: type: - string - 'null' description: Headquarters country code. responses: BadRequest: description: >- Invalid JSON or field values, an unknown signal type, a non-public webhook URL, no valid target in the request, or a team limit was reached (20 monitors, 1,000 targets). content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: success: false error: >- signal_types must be a non-empty array of: funding_round, acquisition, job_change, hiring code: bad_request Unauthorized: description: Missing or invalid API key. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: success: false error: Invalid API key. No key found. code: invalid_api_key SubscriptionExpired: description: The API key belongs to a team without an active subscription. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: success: false error: >- Subscription expired. Please upgrade your subscription: https://www.trysignalbase.com/#pricing code: subscription_expired MonitorNotFound: description: No monitor with that ID exists for the authenticated team. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: success: false error: Monitor not found code: not_found RateLimited: description: >- Rate limit exceeded for this team and endpoint. The response also sets Retry-After, X-RateLimit-Limit, X-RateLimit-Remaining, and X-RateLimit-Reset headers. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: success: false error: Too many requests. Please upgrade your plan or slow down. code: rate_limited retryAfter: 60 InternalError: description: Unexpected server error. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: success: false error: An unknown error occurred code: internal_error securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: API key description: >- Signalbase API key. Include as a Bearer token in the Authorization header. ````