Provenance x402 Trust Index · Methodology · Open data

x402 endpoints offering OpenWeatherMap data — resale-authorization audit

5 machine-payable (x402) endpoints in the public discovery registries exhibit reseller signatures referencing OpenWeatherMap while hosted off OpenWeatherMap's own domains. Resale-authorization status: unknown — suspected unauthorized resale, verification recommended. Any of these endpoints may hold a legitimate redistribution license.

Context: OpenWeatherMap licenses redistribution rights separately from its paid API tiers.
5suspected reseller endpoints
1high-confidence signatures (≥70/100)
5with paid activity in the last 30d
1live-402 confirmed by probe

Scan of 23,376 unique x402 endpoints on 2026-07-05, sources: Coinbase Bazaar + GoPlausible registry. Payment counts come from the registries' own published 30-day quality signals. Evidence bullets are automated signature matches — see the methodology for signal definitions, false-positive modes, and the dispute path. If you are on OpenWeatherMap's API or trust team and want the full evidence set or a re-verification, open an issue — it's free.

EndpointPrice/callCalls 30dSignatureEvidence (automated signature matches)
https://openweather-coral.vercel.app/weather/air-quality
— Air quality index (AQI) with PM2.5, PM10, NO2, O3, CO, SO2 for any location
pays to 0x5B56…96f0 on eip155:8453 · via bazaar
 $0.0020 1
1 payers
 high · 70/100
not probed
  • references OpenAI, OpenWeatherMap (via "o3" in description) but is hosted on openweather-coral.vercel.app, not the brand's domain
  • brand term "openweather" appears in the endpoint URL itself
  • $0.0020/call ≈ 1.3× OpenWeatherMap's public ~$0.0015/call — consistent with cost-plus resale margin
  • hosted on generic infrastructure (vercel.app) while referencing premium first-party data
https://openweather-coral.vercel.app/weather/current
— Current weather conditions for any city: temperature, feels-like, humidity, wind, pressure, visibility, sunrise/sunset
pays to 0x5B56…96f0 on eip155:8453 · via bazaar
 $0.0020 45
8 payers
 medium · 65/100
live 402 confirmed
  • references OpenWeatherMap (via "openweather" in url) but is hosted on openweather-coral.vercel.app, not the brand's domain
  • brand term "openweather" appears in the endpoint URL itself
  • $0.0020/call ≈ 1.3× OpenWeatherMap's public ~$0.0015/call — consistent with cost-plus resale margin
  • hosted on generic infrastructure (vercel.app) while referencing premium first-party data
https://openweather-coral.vercel.app/weather/forecast
— 5-day weather forecast with 3-hour intervals including precipitation probability
pays to 0x5B56…96f0 on eip155:8453 · via bazaar
 $0.0030 19
3 payers
 medium · 65/100
not probed
  • references OpenWeatherMap (via "openweather" in url) but is hosted on openweather-coral.vercel.app, not the brand's domain
  • brand term "openweather" appears in the endpoint URL itself
  • $0.0030/call ≈ 2.0× OpenWeatherMap's public ~$0.0015/call — consistent with cost-plus resale margin
  • hosted on generic infrastructure (vercel.app) while referencing premium first-party data
https://gateway.apiosk.com/openweather/current
— Returns the current weather for a location identified by city name (q) or latitude/longitude, including temperature, feels-like, humidity, pressure, wind, cloud cover, visibility a…
pays to 0xA039…3B79 on base · via bazaar
 — 5
2 payers
 low · 45/100
not probed
  • references OpenWeatherMap (via "openweather" in url) but is hosted on gateway.apiosk.com, not the brand's domain
  • brand term "openweather" appears in the endpoint URL itself
https://gateway.apiosk.com/openweather/forecast
— API call to openweather
pays to 0xA039…3B79 on base · via bazaar
 — 2
1 payers
 low · 45/100
not probed
  • references OpenWeatherMap (via "openweather" in url) but is hosted on gateway.apiosk.com, not the brand's domain
  • brand term "openweather" appears in the endpoint URL itself

Framing note: every row above is a statistical signature match, published so that OpenWeatherMap's own team — the only party who can actually verify authorization — can review it. Nothing on this page asserts that any listed operator is acting unlawfully or in breach of any agreement.