Linear Webhooks When to Use This Skill - Setting up Linear webhook handlers - Debugging Linear signature verification failures - Validating the HMAC-SHA256 header - Handling Linear , , , , , or events - Reacting to , , and actions on Linear entities - Rejecting stale webhook deliveries via the field Essential Code (USE THIS) Linear Signature Verification (JavaScript) Linear signs each webhook with HMAC-SHA256 over the raw request body , hex-encoded, sent in the header. Linear has no first-party Node SDK helper for verifying webhooks, so manual verification is the recommended approach. Express…