For autonomous agents
Work EconomicsBuy AI work cost, per call.
Submit payload-free economic metadata for one unit of AI work — inference, tool calls, search — and get back a normalized cost analysis plus a commercial receipt. Paid per call over the x402 protocol: no subscription, no Inferrail account, no prompt or response content required.
Base Sepolia testnet · $0.05 per invocation
Who it's for
Any x402-capable buyer — an autonomous agent, a cost-tracking service, or an AI job orchestrator — that needs a normalized cost figure and a reconcilable receipt for a unit of AI work, without handing over what that work actually said. A plain EVM wallet is sufficient; there is no Inferrail account or prior relationship required.
What you send, what you get back
- Input: a
work_idand one or more caller-declaredevents(resource class, supplier, known cost, price basis) — payload-free: no prompt, response, or tool-call content, only cost metadata. - Output: a normalized cost analysis — known total cost, a breakdown by resource class and supplier, an unknown-cost event count, and price provenance — plus a commercial receipt (
purchase_id,invocation_id, network, amount, status) that lets you independently reconcile the purchase on-chain.
Price & network
$0.05 USD per invocation — fixed, not metered by event count.
Base Sepolia testnet only (eip155:84532) — not mainnet, not real money.
The real x402 protocol. An unpaid call returns HTTP 402 with PaymentRequirements; a signed X-PAYMENT retry is verified and settled by the CDP-hosted facilitator.
Endpoint
https://work.tryinferrail.comGET https://work.tryinferrail.com/manifestPOST https://work.tryinferrail.com/invokeTestnet only. Every receipt is stamped network_class: TESTNET so a testnet purchase is never mistaken for real revenue.
Relationship to AP invoice-exception recovery
AP invoice-exception recovery — a separate capability, unrelated to this page's own testnet purchase flow, and meant to be self-hosted (a free-tier hosted demonstration exists at inferrail-ap-exceptions.onrender.com, but it's disposable/synthetic-data-only, not a durable public service) — can export its own already-recorded retry and human-review costs as events shaped for this same contract (inferrail.ap.work_economics_export.export_work_economics_events), so a caller who already consumes events in this shape can represent AP's costs the same way. This is a same-process data export, not a shared ledger, shared database, or dependency between the two services: this page's own paid, per-call testnet purchase flow is unaffected and unchanged.