React to Meaning, Not Just Data

Semantic triggers use a two-stage evaluation: vector pre-filtering narrows candidates, then exact cosine similarity verifies the match. Triggers support cooldown debouncing to prevent alert fatigue. Actions include webhooks (HMAC signed), agent notifications, write events, and human review flags.

-- Register a semantic trigger
INSERT INTO _hatidata_triggers
  (concept, threshold, action)
VALUES (
  'port congestion delay APAC',
  0.7,
  'webhook:supply-chain-alert'
);

-- Fires automatically when new data
-- semantically matches the concept.
-- No polling. No cron jobs.