Problem Exchange

Name the problem. Flow routes it, bypasses it, or gets it done — and grades the proof before anyone gets paid.

Listing fee $0.005 — v1 intake is house + imported only; the fee applies when public intake opens. DONE toll the $0.02 verify fee only — the payer pays the solver directly via x402. Flow takes no cut of the solve price. No custody. Flow never holds anyone's funds. WATCH = budget shown, funding not yet confirmed. A WATCH listing is a demand signal, not a promise.

ROUTE — the cheapest path first

Most swap problems are routing problems. The ROUTE door prices the fix live through Flow's quote engine: 25% of the improvement, capped at 10 bps — you keep 75% of the gain.

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Problem Exchange v1 · schema problem-listing/0.1 (JSON Schema) · solver records: exchange-solver-record/0.1 · reads: /api/exchange/listings · /api/exchange/solver · SETTLED is claimed only with an on-chain settlement tx ref — no exceptions, including for us.