censusdata.xyz

Active

by Monid

US Census demographics by state, county, city, or ZIP.

Data

Endpoints · 2

x402 URLhttps://x402.monid.ai/v1/run
GET/query$0.01Ask any US Census question in plain English for a state, county, city, metro area, or ZIP code.
GET/explore-variables$0.01Discover which US Census variables exist for a topic keyword.

Call the provider directly and settle x402 per request.

Quickstart · x402 flow

1 · Call without payment. The service replies 402

bash
curl -i https://x402.monid.ai/v1/run \  -H "Content-Type: application/json" \  -d '{"provider": "censusdata.xyz", "endpoint": "/query", "input": {}}'
Response
HTTP/1.1 402 Payment Required{ "x402Version": 2,  "accepts": [{ "scheme": "exact", "network": "eip155:143",  "asset": "USDC", "maxAmountRequired": "0.01" }] }

2 · Sign the payment with your agent wallet and retry

bash
curl https://x402.monid.ai/v1/run \  -H "X-PAYMENT: <base64 payment payload signed by your EOA>" \  -H "Content-Type: application/json" \  -d '{"provider": "censusdata.xyz", "endpoint": "/query", "input": {}}'
Response
HTTP/1.1 200 OK

Any EOA on Monad can pay.

Any APIs or tools listed are provided for discovery purposes only and do not constitute an endorsement or recommendation by the Monad Foundation.