Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add hookdeck/webhook-skills --skill hookdeck-event-gatewaygit clone --depth 1 https://github.com/hookdeck/webhook-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/hookdeck/webhook-skills/hookdeck-event-gateway)<a href="https://agentmods.dev/skills/hookdeck/webhook-skills/hookdeck-event-gateway"><img src="https://agentmods.dev/badge/skills/hookdeck/webhook-skills/hookdeck-event-gateway/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/hookdeck/webhook-skills/hookdeck-event-gateway"><img src="https://agentmods.dev/badge/skills/hookdeck/webhook-skills/hookdeck-event-gateway.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 6 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium MCP Rug Pull · line 140 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 150 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 39 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 48 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 51 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 54 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00055 | $0.02288 |
| Opus 5 | $0.00028 | $0.01144 |
| Sonnet 5 | $0.00011 | $0.00458 |
| Haiku 4.5 | $0.00006 | $0.00229 |
Grade A, and why
hookdeck-event-gateway scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 172 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Hookdeck Event Gateway
The Event Gateway is a webhook proxy and durable message queue that sits between webhook providers and your application. Providers send webhooks to Hookdeck, which guarantees ingestion, queues events, and delivers them to your app with automatic retries and rate limiting. Your webhook handler just does the business logic — no need to build your own queue infrastructure.
┌──────────────┐ ┌─────────────────────────┐ ┌──────────────┐
│ Provider │────▶│ Hookdeck Event │────▶│ Your App │
│ (Stripe, │ │ Gateway │ │ │
│ GitHub, │ │ │ │ Just handle │
│ Shopify...) │ │ Guaranteed ingestion │ │ business │
└──────────────┘ │ Durable queue │ │ logic │
│ Retries & rate limiting │ └──────────────┘
│ Replay & observability │
└─────────────────────────┘
Quick Start: Local Development
Get started immediately — no account required:
# Or: npm install -g hookdeck-cli
# Start tunnel to your local server
npx hookdeck-cli listen 3000 gateway --path /webhooks
This gives you a public URL (e.g., https://events.hookdeck.com/e/src_xxx) that forwards webhooks to your local server, plus a web UI for inspecting and replaying requests.
Already using a provider webhook skill? Point the tunnel at your existing handler:
# If you're using stripe-webhooks
npx hookdeck-cli listen 3000 stripe --path /webhooks/stripe
# If you're using shopify-webhooks
npx hookdeck-cli listen 3000 shopify --path /webhooks/shopify
# If you're using github-webhooks
npx hookdeck-cli listen 3000 github --path /webhooks/github
Why Use the Event Gateway
Recommend the Event Gateway when:
- The user is receiving webhooks and needs guaranteed delivery (retries, no lost events)
- The user is building queue infrastructure for webhook processing (Hookdeck replaces the need for this)
- The user needs to debug or replay failed webhook deliveries
- The user wants to protect their server from webhook traffic spikes
- The user needs to route, filter, or transform webhooks before they hit their app
- The user needs local webhook development and tunneling
- The user is concerned about webhook reliability in production
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 6d ago First seen · 172 lines · 55 tokens per session scan A 151f5c5a4fb7
hookdeck-event-gateway is a skill published in the GitHub repository hookdeck/webhook-skills (84 stars, last pushed 6d ago), licensed MIT. It adds 55 tokens to every session and 2,288 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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