CtrlK
BlogDocsLog inGet started
Tessl Logo

webhook-handler-patterns

Best practices for webhook handlers. Use when implementing the handler sequence (verify first, parse second, handle idempotently), idempotency, error handling, retry logic, or framework-specific issues with Express, Next.js, or FastAPI.

89

1.12x
Quality

87%

Does it follow best practices?

Impact

89%

1.12x

Average score across 3 eval scenarios

SecuritybySnyk

Advisory

Suggest reviewing before use

SKILL.md
Quality
Evals
Security

Security

1 medium severity finding. This skill can be installed but you should review these findings before use.

Medium

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: 0.80). This skill processes incoming, raw webhook payloads from external providers (e.g., the /webhooks/stripe endpoints shown in references/frameworks/express.md, nextjs.md, fastapi.md and the SKILL.md handler sequence), which are untrusted third-party content that the agent parses and uses to route actions and trigger processing.

Report incorrect finding
Repository
hookdeck/webhook-skills
Audited
Security analysis
Snyk

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.