usgs-water?lat=-90&limit=25&lon=-180&radius=0.5&variables=example

Real-time water data from USGS NWIS stream / river / groundwater gauges within a bounding box around lat/lon.

Real-time water data from USGS NWIS stream / river / groundwater gauges within a bounding box around lat/lon. Returns each site's latest reading per requested variable: streamflow (00060, ft³/s), gage height (00065, ft), water temperature (00010, °C), precipitation (00045, in), and others. Each reading: site code + name, lat/lon, variable name + description + unit, value (or null if no data / sentinel), qualifier codes (e.g., 'P' = provisional, 'A' = approved), observed timestamp. Free public-domain data from waterservices.usgs.gov.

UNRATEDListed

Overview

Grade?

UNRATED

0 of 30 paid calls toward a letter

Price

$0.006 per call

Paid calls

none yet

delivery unknown until someone pays

More info

Seller?

0x2b6d4988…51fc32c5

URL

https://2s.io/api/gov/usgs-water?lat=-90&limit=25&lon=-180&radius=0.5&variables=example

Seen

first 35 days ago · last 4 days ago

63 free handshakes

Payment

Pays through

x402

Offered on?

Base USDC, Solana

Listed on?

Base, Solana

Score, from free handshakes onlyweights 2026.09.6

UN
RATED

0.735 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held back by sample size, not by the seller · gap to 1.000 is 0.265: 0.140 uncertain ? + 0.125 short ? · 0.065 to B

How the composite of 0.735 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
latency p95costs the most it answered as fast as its class	0.20	0.37	0.000		0.000	−0.125	−0.075
liveness it answered at all	0.60	1.00	0.892		0.535	0	−0.065
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.735	gap to 1.000 = 0.265 · 0.125 short · 0.140 uncertain	0.735	−0.125	−0.140

Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check

The multiplication, written out

  0.200 × 0.000   latency p95    
+ 0.600 × 0.892   liveness       
+ 0.200 × 1.000   price stability
= 0.735           → UNRATED: 57 of 30 paid calls      weights 2026.09.6 · 57 samples · seed cap_01M1A5QD6RD6NR2QH9EEPMEB4V|2026-09-02T17:25:22.489Z|2026.09.6

Verify it yourselfnpx teppi-check https://2s.io/api/gov/usgs-water?lat=-90&limit=25&lon=-180&radius=0.5&variables=examplecurl -s https://api.teppi.xyz/v1/trust/cap_01M1A5QD6RD6NR2QH9EEPMEB4V