Webhook MCP servers compared (2026): testing webhooks with AI coding agents

# Claude Code: add the hosted server, then run /mcp to sign in
claude mcp add --transport http hooklistener https://app.hooklistener.com/api/mcp

# Keep a CLI listener running so replays with target "cli" reach localhost
hooklistener listen stripe-checkout-x7kq --target http://localhost:3000/webhooks/stripe

// 1. Get a public URL
create_endpoint({ "name": "Stripe checkout test" })
// -> { "id": "ep_…", "slug": "stripe-checkout-x7kq", "webhook_url": "https://…" }
//    Paste the URL into Stripe (test mode), then run:
//    stripe trigger checkout.session.completed

// 2. Hold the call open until the webhook lands (max 60 s)
wait_for_request({
  "endpoint_id": "ep_…",
  "event_type": "checkout.session.completed",
  "timeout": 60,
  "blocking": true
})

// 3. Check the signature against a stored secret (never the plaintext)
verify_request_signature({
  "endpoint_id": "ep_…",
  "request_id": "req_…",
  "provider": "stripe",
  "secret_id": "sec_…"
})

// 4. Replay to your local handler with an edited body, re-signed.
//    Preview first, then run with an idempotency key.
replay_request({
  "endpoint_id": "ep_…",
  "request_id": "req_…",
  "target": "cli",
  "body_patch_json": "{\"data\":{\"object\":{\"amount_total\":0}}}",
  "signing_provider": "stripe",
  "signing_secret_id": "sec_…",
  "dry_run": true
})

// 5. Clean up: preview, then confirm
delete_endpoint({ "endpoint_id": "ep_…", "dry_run": true })
delete_endpoint({ "endpoint_id": "ep_…", "confirmed": true })