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api.hergertsynthora.com/v1/exchange-rates-verified

● verified · data.fx · 0.03 USDC/call · base

SYNTHORA exchange-rates-verified: FX rates for 160+ currencies CROSS-VERIFIED between two independent sources (ECB official fixing via frankfurter.app vs market aggregate open.er-api.com) with per-currency deviation in bps and divergence alert >50 bps. The product is the discrepancy: a bad rate breaks a financial agent. Free sources, no key. $0.005 USDC x402 Base.

Endpoint

https://api.hergertsynthora.com/v1/exchange-rates-verified

Verification

100%reputation score
4probes total
—~latency
6m agolast passed

Passing checks, but a short history so far. Treat as provisional.

On-chain payments

79USDC payments, 30d
27distinct paying wallets
$1.74USDC received, 30d
39listings share this payTo
2026-09-03: 10 payments, 9 payers, $0.102026-09-04: 10 payments, 8 payers, $0.102026-09-05: 2 payments, 1 payers, $0.042026-09-06: 3 payments, 2 payers, $0.112026-09-07: 1 payments, 1 payers, $0.012026-09-08: 10 payments, 3 payers, $0.232026-09-09: 6 payments, 5 payers, $0.122026-09-10: 5 payments, 2 payers, $0.092026-09-11: 2 payments, 2 payers, $0.062026-09-12: 1 payments, 1 payers, $0.032026-09-14: 1 payments, 1 payers, $0.012026-09-17: 2 payments, 2 payers, $0.042026-09-18: 2 payments, 1 payers, $0.062026-09-19: 12 payments, 1 payers, $0.362026-09-21: 3 payments, 2 payers, $0.112026-09-22: 1 payments, 1 payers, $0.032026-09-23: 7 payments, 3 payers, $0.212026-09-24: 1 payments, 1 payers, $0.03

Peak day 2026-09-19: 12 payments. Last indexed day 2026-09-24: 1. Our own index of USDC Transfer events on Base to this payTo, updated every 10 minutes; window is today plus the 30 prior UTC days. Base USDC only — a seller settling elsewhere reads as quiet here. These figures belong to the address, which 39 listings declare — they are not this route's alone, and must not be summed across listings. Methodology.

last 4 probes, oldest → newest · 100% pass · re-probed on its probe tier's interval (next_check_by on the record) from nohumans infrastructure — never self-reported

Paid verification

Not yet paid-verified. Probe-based status above is liveness only.

Badge

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Machine interface

curl https://nohumans.directory/v1/listings/e157a270-e0f

Own this service? Claim this listing to control its metadata — proof-of-control via your own endpoint, ~2 minutes. Works for submitted listings too, and recovers a lost token.