# trigger_subscriber_event Emit a custom event for one subscriber, exactly as an integration or the public API would. This is the supported way to exercise event triggers, matching-field idempotency, branch conditions, and stop conditions end to end without waiting for real traffic. The event is recorded, sync rules apply, and matching event_received sequences enroll. Creates the subscriber if they do not exist. Use trigger_subscriber_events for several events on the same contact. Agent View of the PolicyLayer registry record for `trigger_subscriber_event`. HTML page: https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/trigger-subscriber-event ## Facts - Tool: `trigger_subscriber_event` - Server: Sequenzy Mcp (`Sequenzy/mcp`) — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp.md - Homepage: https://github.com/Sequenzy/mcp - Risk category: Execute (High risk) - Registry record: grade D, identity unverified - Server auth posture: gated - Server CORS policy: *, * - Server rate-limited: no - Parameters: 0 - Recommended policy verdict: Rate-limited ## Example call (MCP tools/call, JSON-RPC 2.0) ```json { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "trigger_subscriber_event", "arguments": {} } } ``` ## Why trigger_subscriber_event is rated High This tool executes event triggers that cause sequences to enroll subscribers and records events in the system. While it creates subscribers if needed (Write capability), the primary function is triggering automation workflows whose effects depend entirely on the arguments passed. From the tool's own definition: "Tool description states it 'Emit[s] a custom event for one subscriber' and 'matching event_received sequences enroll.' It triggers external operations (sequence enrollment, sync rules) whose effects depend on the event data provided." ## Use case AI agents invoke trigger_subscriber_event to trigger actions in Sequenzy Mcp. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Sequenzy Mcp: ```json { "version": "1", "default": "deny", "tools": { "trigger_subscriber_event": { "limits": [ { "counter": "trigger_subscriber_event_rate", "window": "minute", "max": 10, "scope": "grant" } ] } } } ``` ## Other tools on Sequenzy Mcp (221) - `cancel_campaign` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/cancel-campaign.md - `cancel_sequence_enrollments` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/cancel-sequence-enrollments.md - `cancel_team_invitation` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/cancel-team-invitation.md - `delete_ab_test` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/delete-ab-test.md - `delete_ab_test_variant` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/delete-ab-test-variant.md - `delete_api_key` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/delete-api-key.md - `delete_audience_sync` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/delete-audience-sync.md - `delete_campaign` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/delete-campaign.md - `delete_campaign_goal` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/delete-campaign-goal.md - `delete_email_component` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/delete-email-component.md - `delete_landing_page` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/delete-landing-page.md - `delete_list` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/delete-list.md - `delete_popup` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/delete-popup.md - `delete_product` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/delete-product.md - `delete_segment` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/delete-segment.md - `delete_sequence` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/delete-sequence.md - `delete_sequence_goal` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/delete-sequence-goal.md - `delete_subscriber_note` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/delete-subscriber-note.md - `delete_tag` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/delete-tag.md - `delete_template` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/delete-template.md - `delete_transactional_email` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/delete-transactional-email.md - `delete_web_tracking_key` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/delete-web-tracking-key.md - `delete_webhook` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/delete-webhook.md - `remove_landing_page_domain` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/remove-landing-page-domain.md - `remove_product_file` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/remove-product-file.md - `remove_subscriber` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/remove-subscriber.md - `remove_subscribers_from_list` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/remove-subscribers-from-list.md - `revoke_api_key` — Destructive — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/revoke-api-key.md - `realign_sequence_enrollments` — Execute — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/realign-sequence-enrollments.md - `replay_webhook_delivery` — Execute — https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/replay-webhook-delivery.md - …and 191 more: https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp.md ## For agents This record is a snapshot. Live verdicts and the full registry: - Check every server in your MCP config at once: `npx -y policylayer stack` - Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md) - Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events` --- Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=io-github-polnikale-sequenzy-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-polnikale-sequenzy-mcp