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api.dripmetrics.ai/metrics/roll-spread

● verified · data.other · 0.05 USDC/call · base

DripMetricsAI (api description at https://dripmetrics.ai/) provides on-demand market microstructure and risk metrics for agents and developers. Agents can pay per request via x402 and receive structured JSON metrics without subscriptions or API keys. Roll Spread estimates an absolute covariance spread proxy derived from lagged price changes. Discovery examples use the latest 30m window.

Endpoint

https://api.dripmetrics.ai/metrics/roll-spread

Verification

100%reputation score
5probes total
—~latency
2m agolast passed

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

On-chain payments

164USDC payments, 30d
17distinct paying wallets
$10.46USDC received, 30d
13listings share this payTo
2026-08-29: 3 payments, 2 payers, $0.352026-08-30: 10 payments, 3 payers, $0.502026-08-31: 2 payments, 2 payers, $0.102026-09-01: 3 payments, 3 payers, $0.352026-09-02: 3 payments, 3 payers, $0.152026-09-03: 7 payments, 4 payers, $0.552026-09-04: 32 payments, 5 payers, $2.002026-09-05: 8 payments, 4 payers, $0.402026-09-06: 6 payments, 5 payers, $0.302026-09-07: 3 payments, 2 payers, $0.202026-09-08: 1 payments, 1 payers, $0.052026-09-09: 10 payments, 4 payers, $0.502026-09-10: 4 payments, 3 payers, $0.402026-09-11: 2 payments, 2 payers, $0.102026-09-12: 2 payments, 2 payers, $0.102026-09-13: 1 payments, 1 payers, $0.052026-09-14: 4 payments, 1 payers, $0.602026-09-15: 19 payments, 2 payers, $0.952026-09-16: 9 payments, 2 payers, $0.582026-09-17: 5 payments, 3 payers, $0.172026-09-18: 1 payments, 1 payers, $0.052026-09-19: 3 payments, 1 payers, $0.552026-09-20: 6 payments, 1 payers, $0.302026-09-21: 7 payments, 3 payers, $0.552026-09-22: 8 payments, 3 payers, $0.162026-09-23: 4 payments, 3 payers, $0.402026-09-26: 1 payments, 1 payers, $0.05

Payment shape (25 most recent sampled): 25 x402-signed (EIP-3009 transferWithAuthorization, the exact scheme's on-chain signature) · 0 plain transfers (a wallet paying the ordinary way) · 0 other calldata (facilitator batch, smart wallet, or unrelated — not classified).

Peak day 2026-09-04: 32 payments. Last indexed day 2026-09-26: 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 13 listings declare — they are not this route's alone, and must not be summed across listings. Methodology.

last 5 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/e9f0c20f-981

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.