ROUTE
A live URL plus the observed payment option from this check.
Independent signal an agent checks immediately before spending. Discovery listings are claims. 402Signal reports what the endpoint actually returned. Routing never waits for chain.
Base · Solana · Algorand
$0.01 USDC per live routing check · your agent keeps the wallet.
DISCOVERY
What catalogs claim
Listings and seller metadata. A claim can outlive the endpoint.
402SIGNAL
Check it now
Valid x402? Payment terms? Invocation info? Fresh observation?
YOUR AGENT
Decide whether to spend
Own wallet. Sign. Pay the seller. Call the API.
EVIDENCE · asynchronous
The route is gold and synchronous. Evidence is teal and does not delay routing.
A live URL plus the observed payment option from this check.
What the check established: 402 envelope, terms, invocation info, freshness.
A typed miss instead of substituting an unverified service.
Commitments that can be verified later. Routing does not wait for chain.
PQ transparency · TestNet
As agents start spending money on your behalf, there should be a record of what they relied on. 402Signal keeps a tamper-evident history of its routing evidence and periodically anchors that history to Algorand TestNet using Falcon-1024 authorization.
Latest anchor · Tree 13 · Block 66864432 · Confirmed
So if an agent pays for an API, research, or service, the evidence behind that routing decision can’t simply be rewritten later.