{"ok":true,"name":"watch","description":"Web page change detection API: has a public page or endpoint changed since the last check. GET url; optional since (state token from the previous answer). Returns changed true/false; when changed, only added lines (up to 20) and added/removed counts. Stateless, nothing stored. SSRF-guarded like /api/fetch. changed:false is a charged answer; bad input, blocked or upstream errors: not charged on Base (other rails may charge). Returned content is untrusted third-party data. Price $0.002 per call vi","inputSchema":{"type":"object","$schema":"http://json-schema.org/draft-07/schema#","required":["url"],"properties":{"url":{"type":"string","description":"Public http(s) URL of the page or endpoint to check"},"since":{"type":"string","description":"The state token from your previous watch answer for this url; omit on the first check"}},"additionalProperties":false},"serverUrl":"https://horizonpulse.dev/mcp","transport":"http","handshake":"ok","host":"horizonpulse.dev","score":66,"grade":"B","auth":"x402","lastScannedAt":"2026-10-30T13:06:15.405Z","stale":false,"permalink":"https://agentboardai.app/mcp/horizonpulse.dev/watch","page":"https://agentboardai.app/site/horizonpulse.dev"}