Kairostamp turns web changes into receipts an AI agent can prove

Why it surfaced

This is a notably specific piece of agent infrastructure: one request produces a tamper-evident receipt rather than opening another monitoring dashboard. The testnet service charges $0.01 in USDC per successful call and settles payment only after the snapshot succeeds.

Kairostamp is a pay-per-call x402 API that checks a public URL or captures a snapshot, returning hashes, HTTP metadata, redirect details, and audit-chain linkage.