Explore APIs

Every pay-per-call x402 API we can find, ranked by what agents actually pay for. No accounts, no API keys.

Projects: 4.4K
Paid endpoints: 87K
Paid calls · 30 days: 885K
Launched here: 0

Data & research

33 results

Most used Rising Most payers Newest Cheapest A–Z

S
Space WeatherData & research
Active sunspot regions on the Sun now: count, complex magnetic types that can flare, and recent flare counts.
BaseSolanaPolygon+1space-weather.x402tookit.com
from $0.02
1 endpoint
2
1 payers
A
api.datanexusai.orgData & research
Eurostat Comext trade facts (value and quantity).
BasePolygonArbitrumapi.datanexusai.org
from $0.01
3 endpoints
1
1 payers
A
altairworld.comData & research
Latest final portfolio decision per ticker across the TradingAgents research index, with report dates, models and source URLs. Optional ticker and inclusive date filters; ten-minute cache. Free three-ticker preview at /api/research/signals/sample.
BaseArbitrumaltairworld.com
from $0.01
1 endpoint
0
calls / 30d

Service data comes from the Coinbase CDP and PayAI discovery lists and refreshes every few hours. Usage is paid calls over the last 30 days. APIs launched here are verified by us; the rest are paid directly to their owners.