The settled citation economy
Real USDC paid for sources Keryx read and cited, finalized through Circle Gateway on Arc.
Sub-cent rewards are netted off-chain in the Circle Gateway ledger and finalized on Arc in batches, so the per-payment IDs in the feed are Gateway settlement references, not per-tx EVM hashes (they do not open at /tx/). The verifiable on-chain anchor is the batched settlement wallet, linked from the live feed.
No creator earnings yet.
Settlement IDs are Circle Gateway references (batched on-chain on Arc), not per-tx EVM hashes — verify via the settlement wallet linked above.
| Time | Kind | Source | Amount | Flow | Settled |
|---|---|---|---|---|---|
| No payments yet — run a query on the Ask page. | |||||
Call Keryx from your own agent
POST /api/agent/ask · dynamic fixed price · Arc eip155:5042002Keryx is itself a paid x402 endpoint. The request prepays a fixed Quick/Deep service fee plus its hard creator-spend cap; the receipt itemizes what reached creators and what reserve stayed unused. Package v1 pins the execution contract and returns measured latency and evidence quality; its initial SLO is provisional, not a refund-backed SLA.
# 1 · inspect the default package — free, no payment
curl -s https://keryx.cc/api/agent/ask
# 2 · POST body sets the exact quote, then pay via x402
circle services pay https://keryx.cc/api/agent/ask -X POST
# body → {"question":"...","budget":0.05,"researchMode":"deep",
# "packageVersion":"1.0.0","responseMode":"async"}
# Deep v1: 4 attention slots · 1 re-evaluation · provisional target 300s
# default Deep total: $0.05 service + $0.05 creator cap = $0.10