A comprehensive framework for implementing secure, idempotent, and highly reliable webhook receivers and senders for AI-driven workflows.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install cc3po-webhook
2. Manual Installation
Copy the skill folder to one of these locations
~/.openclaw/skills/ <project>/skills/ Priority: Workspace > Local > Bundled
3. Prompt Installation
Copy this prompt to OpenClaw to install it automatically.
Help me install cc3po-webhook using Clawhub. If Clawhub is not installed, install it first (npm i -g clawhub).
Prefer to download?
Get the raw skill files in a ZIP archive.
What is Webhook Reliability & Security?
The Webhook skill provides a robust blueprint for managing asynchronous communication within the Openclaw Skills ecosystem. It addresses the critical challenges of distributed systems, such as network instability, payload tampering, and duplicate event delivery. By emphasizing security through HMAC-SHA256 signature verification and architectural efficiency through immediate response patterns, this skill ensures that your AI coding agents can interact safely with external services.
Built for developers who require production-grade reliability, it covers both the ingress (receiving) and egress (sending) of data. It ensures that every event is accounted for, verified, and processed exactly once, preventing common pitfalls like double-processing or timing attacks that often plague naive webhook implementations.
Webhook Reliability & Security Use Cases
- Securing AI agent endpoints against unauthorized or forged data payloads.
- Implementing reliable event-driven triggers for CI/CD pipelines and automated deployments.
- Managing high-volume notification systems with built-in idempotency to prevent duplicate actions.
- Synchronizing data between Openclaw Skills and external SaaS platforms like GitHub, Stripe, or Slack.
How Webhook Reliability & Security Works
- The skill initiates a handshake using HMAC-SHA256 signature verification to ensure payload integrity.
- Inbound requests are validated against a timestamp to prevent replay attacks before any processing occurs.
- The system returns an immediate 202 Accepted response to the sender to prevent timeouts, offloading the actual task to an asynchronous queue.
- Idempotency logic checks the event ID against a cache (Redis or Database) to ensure the logic is only executed once.
- For outbound webhooks, an exponential backoff strategy is employed to handle temporary downstream failures automatically.
Webhook Reliability & Security Setup
To integrate this logic into your environment, ensure your receiver endpoint is configured for raw body parsing to avoid breaking signature checks.
# Example: Setting up a secure environment variable for webhook secrets
export WEBHOOK_SECRET="your_high_entropy_secret_here"
# Openclaw Skills often require specific protocol headers
# Ensure your server allows: X-Openclaw-Signature, X-Openclaw-Timestamp
Webhook Reliability & Security Data Schema & Taxonomy
The skill organizes webhook data using a versioned schema to ensure backward compatibility and clear traceability.
| Field | Type | Description |
|---|---|---|
type |
String | The event identifier (e.g., order.created) |
id |
UUID | Unique event ID for idempotency tracking |
timestamp |
ISO 8601 | The exact time the event was generated |
api_version |
String | Versioning for the payload structure |
data |
Object | The primary resource payload or reference ID |
Webhook Reliability & Security Advanced Features
- Multi-version signature support to enable seamless secret rotation without downtime.
- Advanced exponential backoff intervals (1min to 8h) for resilient outbound delivery.
- Timing-safe comparison utilities to mitigate side-channel attacks during verification.
- Detailed delivery tracking logs with manual retry capabilities for failed hooks.
SKILL.md
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