https://x402.fuchss.app/v1/watch-endpoint-30d

{ "bodyFields": { "delivery": { "description": "Optional push delivery: { webhook_url(s), slack_url(s) } (https public hosts, max 5 each). Each field accepts a single URL string or an array of URLs; webhook_url(s) = signed HTTPS webhook; slack_url(s) = Slack or Discord incoming webhook. All URLs are connection-tested before you're charged. Polling is always available.", "required": false, "type": "object" }, "endpoint": { "description": "Full x402 resource URL to watch (must be in our observation set).", "required": true, "type": "string" }, "events": { "description": "Event types to subscribe to (default all): payto_change, price_change, asset_network_change, spec_regression, delisting, liveness_down, liveness_recovered, liveness_flapping.", "required": false, "type": "array" }, "liveness_sensitivity_n": { "description": "Consecutive missed probes before a liveness_down is surfaced to you (1=paranoid … 10=relaxed; default 2).", "required": false, "type": "number" } }, "bodyType": "json", "headerFields": { "PAYMENT-SIGNATURE": { "description": "Base64-encoded JSON PaymentPayload; auto-filled by x402 clients.", "required": true, "type": "string" } }, "method": "POST", "type": "http" }

{ "cancel_url": "string", "delivery": "object", "edit_url": "string", "expires_at": "number", "liveness_sensitivity_n": "number", "next_steps": "array", "poll_url": "string", "probe_interval_sec": "number", "renew_url": "string", "secret": "string", "subscribed_events": "array | 'all'", "watch_id": "string", "watched": "array" }