# Services from api.certaindata.ai on Zero

> api.certaindata.ai serves 7 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/api.certaindata.ai
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/api.certaindata.ai/health.json

## Services

- [CertainData Country Lookup by ISO-2 Code](https://www.zero.xyz/c/certaindata-country-lookup-by-iso-2-code-bb90dda3/llms.txt): $0.007/call via x402. Returns structured country metadata (ISO codes, official name, capital, region, subregion, calling codes) for a given ISO 3166-1 alpha-2 country code.
- [CertainData IP Geolocation](https://www.zero.xyz/c/certaindata-ip-geolocation-2cdd5027/llms.txt): $0.007/call via x402. Returns country, city, subdivisions, network (ASN), and approximate geographic coordinates for a given IPv4 or IPv6 address.
- [CertainData BIN Lookup](https://www.zero.xyz/c/certaindata-bin-lookup-5f2e6f10/llms.txt): $0.015/call via x402. Returns card scheme, type, brand, issuer bank, country, and payout settings for a given card BIN (first 6-8 digits).
- [CertainData Country Lookup](https://www.zero.xyz/c/certaindata-country-lookup-b8c0e073/llms.txt): $0.007/call via x402. Look up a country by name, ISO code, or calling code and return standardized metadata including ISO codes, capital, region, subregion, and calling codes.
- [CertainData FX Rates – All Currencies for Base](https://www.zero.xyz/c/certaindata-fx-rates-all-currencies-for-base-711e9073/llms.txt): $0.007/call via x402. Returns mid-market ECB reference exchange rates for one base currency against all published currencies, with optional historical date lookup.
- [CertainData FX Rate (ECB Mid-Market)](https://www.zero.xyz/c/certaindata-fx-rate-ecb-mid-market-eebfef17/llms.txt): $0.007/call via x402. Returns the European Central Bank mid-market reference rate for a given base/quote currency pair, either the latest or a historical date.
- [CertainData Public Holidays API](https://www.zero.xyz/c/certaindata-public-holidays-api-addaa788/llms.txt): $0.007/call via x402. Returns a dated list of public holidays for a given country (ISO-2 code) and year, optionally filtered by holiday type.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)