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SYNTHORA x402 Registry Watch
x402
SYNTHORA x402 Registry Watch is a paid API for AI agents from regwatch.hergertsynthora.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).
Streams signed Ed25519 delta events from the live x402/M2M endpoint registry, including endpoint changes, payTo address updates, listings, and price changes, with verifiable provenance receipts per response.
Price / call$0.05
Success—
StatusUnknown
How this service works
Real-time x402 endpoint discovery and M2M market-data feed: x402 endpoint delta feed, payTo address changes, x402 service listings live, x402 registry diff and x402 index deltas. Pay-per-event feed for router-agent price feed consumers; every response is Ed25519-signed with per-row and whole-response provenance receipt.
Output
Returns an object with 'ok' boolean, a 'result' containing delta events (endpoint additions, removals, payTo address changes, price updates) since the specified cursor or timestamp, and a 'receipt' object with Ed25519 signatures for per-row and whole-response provenance verification.
Example use cases
Example prompt
“Give me the latest x402 registry changes since cursor del_abc123, filtered to the 'defi-data' market slug, up to 50 events — and include the Ed25519 receipt so I can verify the provenance.”
Technical details
Endpoint
POSThttps://regwatch.hergertsynthora.com/serviceWhen to prefer
Choose this endpoint when you need cryptographically verifiable, signed delta feeds of the x402/M2M endpoint registry — especially for router agents or discovery services that require tamper-evident provenance receipts and need to efficiently poll only changes since a known cursor rather than fetching the full registry. Ideal when building automated x402 routing or arbitrage agents that need to react to price or listing changes in real time.
Side effects
- Invalid or expired 'since' cursor returns an error or empty result set
- Unknown market slug returns empty results or 400 error
- Payment not received (x402 protocol) causes 402 response blocking access
- Malformed timestamp in 'since' field causes parsing error
- Rate limiting or overload may return 5xx response
- Ed25519 signature verification failure on client side if receipt is tampered
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| slug | string | |
| limit | integer | |
| since | string |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"niche": "registry_watch",
"result": {
"feed": [],
"as_of": "2026-08-05T16:48:43Z",
"count": 0,
"cursor": null,
"source": "registry-watch"
}
}
}Tags
x402
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