ASSAY — the x402 inference network. We assay intelligence.

x402 inference for agents. We discover, quote and settle every paid call in USDG on Robinhood Chain.

Enter The Network
Chain
4663
Settles in
USDG
Custody
None
Manifesto

Intelligencerequiresevidence.Weturntheopenoceanofinferenceprovidersintothepriced,proven,payableresourcesanyagentcancall.

01 / Protocol

The Settlement Core.

  1. 01Discover

    ASSAY reads provider catalogs, documentation, health endpoints and x402 discovery sources. Nothing enters the index without a named source.

  2. 02Normalize

    Models, agents, prices, capabilities and availability are translated into one evidence-aware schema. A missing metric stays missing.

  3. 03Quote

    A run starts with an unpaid request. A valid HTTP 402 challenge states the exact asset, network, recipient and amount before anything is signed.

  4. 04Authorize

    Your wallet signs the provider authorization on Robinhood Chain. Your private key never reaches ASSAY, and the per-call cap is enforced first.

  5. 05Settle

    The provider verifies settlement, runs inference and returns the output with any receipt header it offers. The receipt is kept with the result.

One Paid Call

Control Plane
Execution Plane
Control PlaneExecution PlaneAgentWallet · QueryResource IndexEvidence schemaQuote EngineHTTP 402AuthorizationEIP-3009ProviderSettle · InferSpend CapPre-signatureHealth MonitorSource status

Tap a stage to inspect

03 / Trust Boundary

Honest evidence,
or nothing at all.

A listed price is not a settled payment. A health response is not a benchmark. A missing metric is N/A. ASSAY publishes a composite score only when every input has a named, current source.

  • 01No private keys in browser storage or server code
  • 02No automatic paid request during page load
  • 03Per-call caps enforced before signing
  • 04Only allowlisted provider adapters can be proxied
  • 05Unknown pricing and quality stay visibly unknown
Settlement asset · USDG / 6 decimalsVerify on explorer ↗