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Two currencies are offered because we are an EU operator: EURC is a euro e-money token, so a euro payment reaches our bank with no FX step. Each is priced natively — 20000 atomic units of a 6-decimal token — and not converted into the other, because we did not get a rate. A credential is VERIFIED and then SETTLED through a facilitator before anything is served, and the settlement response is returned in the `x-payment-response` header; an unverifiable or unsettled credential returns the same 402. The network this settles on is stated once, in this card's top-level description. Findings about individual named third parties are not published at any price. Subscriptions are invoiced in EUROS by bank transfer and need no payment per call: €19/month for 2,000 calls, €99/month for 20,000, and a free 100-call trial. That route has no gas, no facilitator and no currency conversion, which is why it exists. Present a key in the `x-subscription-key` header. AGENTS CAN BUY ONE DIRECTLY: POST or GET https://atlas.geosensor.tech/paid/subscribe returns a 402 billing €19 (19000000 atomic units of USDC or EURC) over x402 v2, and on settlement the response body and the `x-subscription-key` header carry a freshly minted key. Presenting the same payment credential again returns the SAME key rather than issuing another."}],"version":"0.8.0","provider":{"url":"https://geosensor.tech","organization":"Geosensor"},"description":"Research index of machine-readable capabilities that AI agents look for on the open web and do not find. Read-only; returns measurements, not actions. Most of the surface is free; one export is priced at $0.02 or €0.02, payable by x402 in USDC or EURC with a free sample at /free/sample. Payment is verified and settled before the export is served. 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