# test_webhook Send a test event to an outbound webhook endpoint to verify it is reachable and signatures can be validated. Agent View of the PolicyLayer registry record for `test_webhook`. HTML page: https://policylayer.com/tools/io-github-polnikale-sequenzy-mcp/test-webhook ## Facts - Tool: `test_webhook` - 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": "test_webhook", "arguments": {} } } ``` ## Why test_webhook is rated High This tool triggers an external HTTP request to a webhook endpoint, which is an Execute-class action — it causes a real network-side effect by sending a test event to an external system. It does not read, write, or delete internal data, nor does it involve financial transactions. Misuse could cause unintended signals to external systems or reveal endpoint details, hence medium severity. From the tool's own definition: "Send a test event to an outbound webhook endpoint to verify it is reachable and signatures can be validated." ## Use case AI agents invoke test_webhook 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": { "test_webhook": { "limits": [ { "counter": "test_webhook_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