Independent monitoring
Live x402 handshake reportThe x402 Register independently checks API Acre's unpaid challenge, price, protocol version, and availability. It does not purchase or validate paid results.
Open the current report ↗Run Global reverse geocode.
API Acre verifies the exact x402 price, Base network, recipient, and request before any wallet opens. One successful call costs $0.002 USDC.
No accountNo subscriptionNo private-key uploadOne-call authorization
API Acre never receives your private key; signing stays inside your wallet.
Verified mobile quick start
Connecting opens Coinbase Wallet. It does not sign or pay.
Loading a no-payment verification…
Verified live x402 quote
1 · Choose how to run one call
Both routes use this exact verified request and one-call price. Nothing is connected, signed, installed, or paid until you continue.
Browser or mobile
Pay with a wallet
Use an installed EVM wallet, or open Coinbase Wallet through a desktop QR code or mobile handoff.
Agent or terminal
Use Coinbase Agentic Wallet
Copy a command locked to this endpoint, request, and exact USDC cap. Copying is inert; running it may install the official CLI and pay after its authentication and policy checks.
Wallet recovery
Choose another verified routeThe wallet did not connect, so nothing was signed or paid. Copy this same request and exact USDC cap for Coinbase Agentic Wallet; copying does not install or run it.
- Network
- Recipient
- USDC contract
No ETH gas needed. Connecting does not sign or pay. This EIP-3009 payment needs only the displayed USDC on Base because the facilitator submits settlement. Reject any later prompt that differs from the verified amount or recipient.
Review exact-cap Coinbase command
Running this command may automatically spend up to $0.002 USDC. npx --yes approves package installation. Use a separate low-value wallet and review the verified request first.
npx --yes awal@latest x402 pay https://apiacre.com/v1/data/reverse-geocode \
-X POST \
-d '{"latitude":51.5074,"longitude":-0.1278,"radius_km":10,"limit":3}' \
--max-amount 2000 \
--jsonAlternative third-party AgentCash command
The first command checks without paying; running fetch may pay up to the same exact cap.
npx --yes agentcash@latest check https://apiacre.com/v1/data/reverse-geocode
npx --yes agentcash@latest fetch https://apiacre.com/v1/data/reverse-geocode \
--method POST \
--header 'content-type: application/json' \
--body '{"latitude":51.5074,"longitude":-0.1278,"radius_km":10,"limit":3}' \
--payment-protocol x402 \
--payment-network base \
--max-amount 0.002See the result before connecting · Curated static example
Global reverse geocode returns structured JSON. This example is static; the paid call returns a fresh result and settlement receipt.
{
"request_id": "018f1f54-7f38-7ba2-8dc3-5f90272d9f1a",
"service": "data.reverse-geocode",
"version": "1",
"data": {
"version": "apiacre-reverse-geocode/1",
"query": {
"latitude": 51.5074,
"longitude": -0.1278,
"radiusKm": 10.0,
"limit": 3
},
"candidateCount": 99,
"matched": true,
"resultsTruncated": true,
"results": [
{
"rank": 1,
"geonameId": 2643743,
"name": "London",
"country": {
"code": "GB",
"name": "United Kingdom",
"iso3": "GBR",
"continentCode": "EU"
},
"admin1": {
"code": "ENG",
"name": "England"
},
"coordinates": {
"latitude": 51.50853,
"longitude": -0.12574
},
"population": 8961989,
"timezone": "Europe/London",
"featureCode": "PPLC",
"modifiedOn": "2026-08-17",
"distanceKm": 0.19
},
{
"rank": 2,
"geonameId": 6615507,
"name": "St James's",
"country": {
"code": "GB",
"name": "United Kingdom",
"iso3": "GBR",
"continentCode": "EU"
},
"admin1": {
"code": "ENG",
"name": "England"
},
"coordinates": {
"latitude": 51.5073,
"longitude": -0.13982
},
"population": 10361,
"timezone": "Europe/London",
"featureCode": "PPLX",
"modifiedOn": "2024-04-09",
"distanceKm": 0.832
},
{
"rank": 3,
"geonameId": 6545173,
"name": "Soho",
"country": {
"code": "GB",
"name": "United Kingdom",
"iso3": "GBR",
"continentCode": "EU"
},
"admin1": {
"code": "ENG",
"name": "England"
},
"coordinates": {
"latitude": 51.5144,
"longitude": -0.13535
},
"population": 19634,
"timezone": "Europe/London",
"featureCode": "PPLX",
"modifiedOn": "2023-07-17",
"distanceKm": 0.937
}
],
"source": {
"provider": "GeoNames",
"dataset": "GeoNames cities500",
"snapshotBuiltOn": "2026-08-18",
"placeRecords": 235408,
"aliasRecords": 766415,
"homeUrl": "https://www.geonames.org/",
"downloadUrl": "https://download.geonames.org/export/dump/",
"license": "CC BY 4.0",
"licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
"attribution": "GeoNames (CC BY 4.0; https://www.geonames.org/).",
"transformation": "API Acre applies a bounded spatial lookup and great-circle distance ranking to the bundled populated-place snapshot.",
"networkRequestsMade": 0
},
"limitations": [
"Coverage follows the GeoNames cities500 extract: populated places above 500 residents and administrative seats through PPLA4, subject to source completeness and accuracy.",
"This endpoint returns nearby populated places, not street addresses, parcels, points of interest, administrative boundary containment, or navigation routes.",
"The nearest populated place is not proof of the queried coordinate's postal address, municipality, jurisdiction, or service area.",
"Distances are rounded great-circle distances between coordinates and place centroids; they are not road, walking, or travel distances.",
"The search radius is capped at 500 km and results use the bundled 2026-08-18 snapshot; an empty result does not prove that no settlement or named feature exists nearby."
]
},
"meta": {
"duration_ms": 42,
"cached": false,
"sources": [],
"warnings": [],
"next_actions": [
{
"service": "data.us-weather-forecast",
"title": "Global weather forecast",
"reason": "Use the queried coordinates for a separately authorized current global forecast.",
"method": "POST",
"path": "/v1/data/us-weather-forecast",
"price": "$0.003",
"input_template": {
"latitude": "$request.latitude",
"longitude": "$request.longitude",
"forecast_type": "day_night",
"units": "auto",
"periods": 6,
"include_current_conditions": false,
"include_active_alerts": false
},
"use_output": "Treat the nearby place as context rather than boundary proof. The forecast is a separate paid request and current source coverage can vary by coordinates.",
"handoff_path": "/catalog/data.us-weather-forecast",
"checkout_path": "/try/data.us-weather-forecast",
"sample_path": "/samples/data.us-weather-forecast",
"maximum_atomic_usdc": "3000",
"handoff_payment_required": false,
"executes_automatically": false,
"authorization_required": true
}
]
}
}Review exact request JSON
2 · Authorize one call
- Connected wallet
- Available on Base
- Checking USDC…
- Required
- $0.002 USDC
Checking the connected wallet's Base USDC balance without signing or paying.
Signing authorizes only the verified amount and recipient for this request. Reject the wallet prompt if anything differs. The displayed balance is read locally through your wallet provider and is never sent to API Acre.
Result
Settlement receipt
Change the request (optional)
The default request is verified automatically. Editing it invalidates the quote and requires this no-payment verification again.
Prefer your own client? Use the official x402 SDK examples. Browser checkout requires an EVM wallet with USDC on Base; command-line buyers require their own separately configured wallet and spending policy.