AssayThe spending brain
for research agents.
Assay gives an AI agent a budget and a conscience. It scores every paid source for value-of-information, buys only what moves the answer forward — and shows you exactly why it refused the rest.
Four steps between a question and a receipt.
Discover
The agent reads free abstracts from creator sources — never the paywalled content.
Score
Each source gets a value-of-information score: relevance × novelty × expected gain vs price.
Buy or refuse
Worth it? A ~$0.003 USDC payment settles over x402 on Arc. Not worth it? Logged with a rationale.
Prove
Answers cite only paid sources. Every payment has an on-chain proof; every refusal an explanation.
Any agent can spend money.
Trust comes from restraint.
The Wall of No
Most demos brag about what an agent buys. Assay showcases what it refuses — every declined source, with the metrics and reasoning that killed it. That's the audit trail your budget deserves.
Creators get paid per use
Publish a source behind an x402 endpoint, set a price, connect a wallet. When an agent decides your content is worth it, USDC lands directly — no subscriptions, no middlemen, no invoices.
The ledger doesn't lie
Every payment carries a settlement proof on Arc testnet. Totals, per-creator payouts, buy/skip ratios — all live, all verifiable, all one click away in the console.
Real rails, not mocks.
Watch an agent spend a nickel
like it's a million dollars.
Give it a research task, a $0.05 budget, and watch every buy, skip, and cache-hit happen live.
Launch the Console