Trigger agents from Slack, Linear, and GitHub webhooks

Agents can now react to what happens in the tools your team already lives in. A shared webhook-trigger foundation lets Slack, Linear, and GitHub events drive your agents, with signature verification, delivery de-duplication, and event filtering handled for you — so wiring up a new source is a matter of pointing it at Gram.

Features

• Linear webhook triggers #2729  - Drive agents from Linear events with verified HMAC-SHA256 signatures and Linear-Delivery de-duplication. Comments fold onto their parent issue’s conversation, so an agent sees the full context of an issue rather than scattered events. (Author: @danielkov )
• GitHub webhook triggers #2729  - Drive agents from GitHub events with verified sha256= signatures and X-GitHub-Delivery de-duplication. Pull request, review, and comment activity correlates onto the PR, and pushes onto their repo and branch, so related events arrive as one coherent conversation. (Author: @danielkov )
• A shared foundation for webhook sources #2729  - A common webhook-trigger abstraction centralizes signature verification, replay protection, and a default-deny event-type allowlist with CEL filters, so every source — including the existing Slack trigger, now rebuilt on it — behaves consistently and new sources land quickly. (Author: @danielkov )