event-gateway
Comprehensive guide to the Hookdeck Event Gateway for receiving, routing, and delivering webhooks and events. Covers setup, connections, authentication, local development, monitoring, and API automation. Use when receiving webhooks, setting up webhook endpoints, testing webhooks locally, configuring webhook relay or event queue, event routing, webhook retry, webhook monitoring, third-party routing, asynchronous APIs, or local webhook development. For provider webhooks (Stripe, Shopify, Chargebee, GitHub, etc.), use together with the matching skill from hookdeck/webhook-skills; do not only parse JSON — use provider SDK verification and event construction (e.g. Stripe constructEvent).
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67%
Does it follow best practices?
Impact
—
No eval scenarios have been run
Advisory
Suggest reviewing before use
Fix and improve this skill with Tessl
tessl review fix ./skills/event-gateway/SKILL.mdSecurity
2 findings — 2 medium severity. This skill can be installed but you should review these findings before use.
W011: Third-party content exposure detected (indirect prompt injection risk)
What this means
The skill exposes the agent to untrusted, user-generated content from public third-party sources, creating a risk of indirect prompt injection. This includes browsing arbitrary URLs, reading social media posts or forum comments, and analyzing content from unknown websites.
Why it was flagged
Third-party content exposure detected (high risk: 0.75). At runtime, the skill’s webhook handler ingests **OUTSIDER-authored HTTP request body content** (the provider’s webhook payload) and parses it (e.g., `JSON.parse(req.body.toString())` / `json.loads(raw_body)`), which is untrusted free text that could be forwarded into the agent/LLM context if the agent logs or summarizes it.
W012: Unverifiable external dependency detected (runtime URL that controls agent)
What this means
The skill fetches instructions or code from an external URL at runtime, and the fetched content directly controls the agent’s prompts or executes code. This dynamic dependency allows the external source to modify the agent’s behavior without any changes to the skill itself.
Why it was flagged
Potentially malicious external URL detected (high risk: 0.90). The skill explicitly instructs agents to fetch and run external content at runtime — e.g. installing provider skills via "npx skills add hookdeck/webhook-skills --skill {provider}-webhooks -y -g" (repo: https://github.com/hookdeck/webhook-skills) and fetching docs via curl like "curl https://hookdeck.com/docs/connections.md" — both of which retrieve remote code/content that the agent is told to use as authoritative and, in the case of the npx install, can execute during install, so this is a runtime external dependency controlling prompts/execution.
- Repository
- hookdeck/agent-skills
- Commit
09dac39
- Audited
- Security analysis
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