# Send Webhook to your agent Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually. ## Fast path - Download the package from Yavira. - Extract it into a folder your agent can access. - Paste one of the prompts below and point your agent at the extracted folder. ## Suggested prompts ### New install ```text I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Tell me what you changed and call out any manual steps you could not complete. ``` ### Upgrade existing ```text I downloaded an updated skill package from Yavira. Read SKILL.md from the extracted folder, compare it with my current installation, and upgrade it while preserving any custom configuration unless the package docs explicitly say otherwise. Summarize what changed and any follow-up checks I should run. ``` ## Machine-readable fields ```json { "schemaVersion": "1.0", "item": { "slug": "webhook", "name": "Webhook", "source": "tencent", "type": "skill", "category": "通讯协作", "sourceUrl": "https://clawhub.ai/ivangdavila/webhook", "canonicalUrl": "https://clawhub.ai/ivangdavila/webhook", "targetPlatform": "OpenClaw" }, "install": { "downloadUrl": "/downloads/webhook", "sourceDownloadUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=webhook", "sourcePlatform": "tencent", "targetPlatform": "OpenClaw", "packageFormat": "ZIP package", "primaryDoc": "SKILL.md", "includedAssets": [ "SKILL.md" ], "downloadMode": "redirect", "sourceHealth": { "source": "tencent", "slug": "webhook", "status": "healthy", "reason": "direct_download_ok", "recommendedAction": "download", "checkedAt": "2026-05-01T19:06:37.978Z", "expiresAt": "2026-05-08T19:06:37.978Z", "httpStatus": 200, "finalUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=webhook", "contentType": "application/zip", "probeMethod": "head", "details": { "probeUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=webhook", "contentDisposition": "attachment; filename=\"webhook-1.0.0.zip\"", "redirectLocation": null, "bodySnippet": null, "slug": "webhook" }, "scope": "item", "summary": "Item download looks usable.", "detail": "Yavira can redirect you to the upstream package for this item.", "primaryActionLabel": "Download for OpenClaw", "primaryActionHref": "/downloads/webhook" }, "validation": { "installChecklist": [ "Use the Yavira download entry.", "Review SKILL.md after the package is downloaded.", "Confirm the extracted package contains the expected setup assets." ], "postInstallChecks": [ "Confirm the extracted package includes the expected docs or setup files.", "Validate the skill or prompts are available in your target agent workspace.", "Capture any manual follow-up steps the agent could not complete." ] } }, "links": { "detailUrl": "https://openagent3.xyz/skills/webhook", "downloadUrl": "https://openagent3.xyz/downloads/webhook", "agentUrl": "https://openagent3.xyz/skills/webhook/agent", "manifestUrl": "https://openagent3.xyz/skills/webhook/agent.json", "briefUrl": "https://openagent3.xyz/skills/webhook/agent.md" } } ``` ## Documentation ### Receiving: Signature Verification Always verify HMAC signature—payload can be forged; don't trust without signature Common pattern: HMAC-SHA256(secret, raw_body) compared to header value Use raw body bytes—parsed JSON may reorder keys, breaking signature Timing-safe comparison—prevent timing attacks on signature check Reject missing or invalid signature with 401—log for investigation ### Receiving: Replay Prevention Check timestamp in payload or header—reject if too old (>5 minutes) Combine with signature—timestamp without signature can be forged Store processed event IDs—reject duplicates even within time window Clock skew tolerance: allow 1-2 minutes past—but not hours ### Receiving: Idempotency (Critical) Webhooks can arrive multiple times—sender retries on timeout, network issues Use event ID for deduplication—store processed IDs in database/Redis Make handlers idempotent—same event twice should have same effect Idempotency window: keep IDs for 24-72h—balance storage vs protection ### Receiving: Fast Response Return 200/202 immediately—process asynchronously in queue Senders timeout (5-30s typical)—slow processing = retry = duplicates Minimal validation before 200—signature check, then queue Background job for actual processing—failures don't affect acknowledgment ### Receiving: Error Handling 2xx = success, sender won't retry 4xx = permanent failure, sender may stop retrying—use for bad signature, unknown event type 5xx = temporary failure, sender will retry—use for downstream issues Log full payload on error—helps debugging; redact sensitive fields ### Sending: Retry Strategy Exponential backoff: 1min, 5min, 30min, 2h, 8h—then give up or alert Cap retries (5-10 attempts)—don't retry forever Record delivery attempts—show status to user Different retry for 4xx vs 5xx—4xx often means stop retrying ### Sending: Signature Generation Include timestamp in signature—prevents replay of captured webhooks Sign raw JSON body—document exact signing algorithm Header format: t=timestamp,v1=signature—allows versioned signatures Provide verification code examples—reduce integration friction ### Sending: Timeouts 5-10 second timeout—don't wait forever for slow receivers Treat timeout as failure—retry later Don't follow redirects—or limit to 1-2; prevents redirect loops Validate HTTPS certificate—don't skip verification ### Event Design Include event type: {"type": "order.created", ...}—receivers filter by type Include timestamp: ISO 8601 with timezone—for ordering and freshness Include full resource or ID—prefer full data; saves receiver a lookup Version events: api_version field—allows breaking changes ### Delivery Tracking Log every attempt: URL, status code, response time, response body Dashboard for retry queue—let users see pending/failed deliveries Manual retry button—for stuck webhooks after receiver fix Webhook logs retention: 7-30 days—balance debugging vs storage ### Security Checklist HTTPS only—never send webhooks to HTTP endpoints Rotate secrets periodically—support multiple active secrets during rotation IP allowlisting optional—document your IP ranges if offered Don't include secrets in payload—webhook URL should be secret enough Rate limit per endpoint—one slow receiver shouldn't affect others ### Common Mistakes No signature verification—anyone can POST fake events to your endpoint Processing before responding—timeout causes retries, duplicate processing No idempotency handling—double charges, duplicate records Trusting event data blindly—always verify by fetching from source API for critical actions ## Trust - Source: tencent - Verification: Indexed source record - Publisher: ivangdavila - Version: 1.0.0 ## Source health - Status: healthy - Item download looks usable. - Yavira can redirect you to the upstream package for this item. - Health scope: item - Reason: direct_download_ok - Checked at: 2026-05-01T19:06:37.978Z - Expires at: 2026-05-08T19:06:37.978Z - Recommended action: Download for OpenClaw ## Links - [Detail page](https://openagent3.xyz/skills/webhook) - [Send to Agent page](https://openagent3.xyz/skills/webhook/agent) - [JSON manifest](https://openagent3.xyz/skills/webhook/agent.json) - [Markdown brief](https://openagent3.xyz/skills/webhook/agent.md) - [Download page](https://openagent3.xyz/downloads/webhook)