Continuous smart-contract monitoring and change detectionGET /service · x402 API by contractwatch
Continuous smart-contract monitoring and change detection. Instead of re-buying the same one-off verdict every day, this watch returns the CURRENT security verdict PLUS exactly what changed since the last time this contract was checked: owner changed or ownership taken back, proxy implementation/beacon upgraded (logic swap), proxy-admin changed, verification (Sourcify) gained or lost, honeypot or buy/sell tax flip, new dangerous functions (mintable, pausable, blacklist, selfdestruct, hidden owner), trust-list on/off, and verdict escalation. Use it for continuous contract monitoring, upgrade/rug watch, security drift detection and change alerts. Built on the same on-chain engine (web3 proxy/owner reads + Sourcify + GoPlus token & address security). Ed25519-signed. 0.02 USDC on Base.
What does this x402 API do?
Continuous smart-contract monitoring and change detection. This is an x402-gated GET API resource from contractwatch. TOLL·402 confirmed a protocol-valid HTTP 402 quote on 2026-07-21. The listing records $0.02 USD-denominated per request on Base. No settled paid call has been verified.
- Published price
- $0.02 USD-denominated per request
- Networks
- Base
- Latest evidence
- TOLL·402 confirmed a protocol-valid HTTP 402 quote on 2026-07-21
- Resource ID
- d5460ae9fc43e28aa597b313
Start with a quote-only recipe. Payment signing stays in your project.
const response = await fetch("https://contractwatch.hergertsynthora.com/service", {
method: "GET",
});
console.log(response.status);
console.log(Object.fromEntries(response.headers));
console.log((await response.text()).slice(0, 1000));
// A valid 402 is a quote, not a completed paid call.This sends no payment. Inspect the 402 response before adding a wallet-enabled client.
- Live 402 quote confirmed
GET returned a protocol-valid 402 quote (402). No payment was made.
- Origin reachable
HEAD https://contractwatch.hergertsynthora.com/ returned 404.
- Observed in 402-index
Discovered through bazaar.
What evidence supports this listing?
Each record has an exact-route quote outcome. Unresolved templates and potentially mutating methods are labeled instead of being invoked without provider-specific test input. A quote is still separate from a settled paid call. Read the discovery and verification methodology →
Which networks and payment options does it accept?
The normalized listing price is $0.02 USD-denominated per request. Raw protocol requirements remain visible below for implementation and audit use.