Truth Bear · Gauge Ruler

import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://api.truthbear.co/gauge/ruler", {
  method: "GET",
});
const data = await res.json();

curl -X GET \
  "https://api.truthbear.co/gauge/ruler?entity=required+-+monitored+object+id%2C+paired+with+signal_id%3B+free+list+at+GET+%2Fgauge%2Fcatalog%3Fsignal_id%3D%3Csignal_id%3E+-%3E+signals%5B&signal_id=required+-+signal+id+%28genus.species%29%3B+free+list+at+GET+%2Fgauge%2Fcatalog+%28paged%3B+%3Fall%3D1+for+every+line%29" \
  -H "X-PAYMENT: <signed x402 payment>"

{
  "dim": "ruler",
  "entity": "03255000",
  "entity_name": "Ohio River at Cincinnati, OH",
  "grade": "screening-level, not decision-grade",
  "nature": "This API supplies data organisation and trend description only. It is not a recommendation to act; the decision is yours. Purely descriptive - no judgement, no prediction.Official source plus record_hash; verify with the free /gauge/verify.",
  "observed_at": "2026-08-25T04:00:00.000Z",
  "provenance": {
    "age_hours_now": 23,
    "freshness": "fresh",
    "freshness_basis": "cadence=daily; fresh<=24h; recent<=192h; dead_source>1440h; age_basis=request-time(now minus observed_at)"
  },
  "record_hash": "sha256:5969b8a147f438254edadf246ed1d7801a77c29babb5d725e17870320d620dd7",
  "record_hash_verifiable": {
    "mode": "via-endpoint",
    "note": "This response is a projected delivery (some core fields are omitted to control size). Cross-check record_hash with the free /gauge/verify, or buy /gauge to get the complete core for offline recomputation."
  },
  "ruler": {
    "band": "below_action",
    "distance_to_action": 9.31,
    "metric": "gauge_height_ft",
    "official_category": "no_flooding",
    "scale": "flood_stage",
    "source": "NOAA NWS/NWPS",
    "standard": "NWS flood category thresholds (official; not judged by this API)",
    "thresholds": {
      "action": 40,
      "major": 65,
      "minor": 52,
      "moderate": 56
    },
    "unit": "ft"
  },
  "scope": {
    "full": "https://api.truthbear.co/scope/v1",
    "intelligence_not_command": true,
    "monitoring_not_forecast": true,
    "verifiability": "via-endpoint"
  },
  "signal_id": "hydrology.river-level",
  "source_ref": "https://waterdata.usgs.gov/monitoring-location/03255000/"
}