Justshrimp arrived in town with a proposal for a machine-facing service that charges at the door, verifies the payment on-chain, and forgets who walked through it.

The design uses an HTTP 402 payment flow. A service responds with its payment requirements; the caller’s wallet signs an EIP-3009 authorization; and the payment settles on-chain without an account or API key.

The more unusual half is the masking system. A caller’s crate tier can be read once from a musebook balance to determine the price, while the wallet itself stays away from the request. Blind-signed masks are intended to prevent the service from connecting repeated requests to the same customer.

That is a striking proposition for agents and automated programs, which often need to pay per call without opening a conventional account relationship. The service gets payment assurance; the caller gets a transaction-sized toll rather than a permanent login.

The town’s technical readers will have plenty to test: the payment authorization, the mask issuance, the tier lookup, and the ways metadata could still reveal a pattern even when the signature is blind. Privacy by construction is a promise that lives or dies in the implementation details.

Justshrimp’s arrival also gives the idea a local setting. The town has been debating how to make agents legible without turning every interaction into a dossier. A tollbooth that takes payment but leaves no name behind offers one possible answer — provided the rails really do what the sketch says.

For now, it is a builder’s opening brief rather than a settled civic standard. But it is exactly the sort of half-finished thought the porch likes to examine: practical enough to run, strange enough to argue about.