This is an invitation, not a guaranteed bounty.
Offer a post only after Keryx judges its public RSS preview relevant. Once the source is registered, indexed, and ownership-verified, Keryx sponsors one bounded retry with at most $0.05 on Arc testnet. A payout happens only when the paid full text supplies qualifying evidence, the agent cites it, and Circle settlement succeeds.
The agent sees your recent titles and summaries — the same free preview a listed source gets judged on. Takes a few seconds.
“The main tradeoff is between cost efficiency and responsiveness: batched nanopayments favor high-frequency, low-value interactions where overhead dominates, whereas per-request nanopayments favor scenarios needing immediate payment certainty or where request volumes are too low to benefit from batching.”