21 world data tools: airports, units, markets, security, travel meds, pet entry. x402 per call.
Free
One server, in research. 21 world data tools: airports, units, markets, security, travel meds, pet entry. x402 per call.
Research
21 world data tools: airports, units, markets, security, travel meds, pet entry. x402 per call.
The rest either hold an API key issued by the publisher or ask for nothing.
Listed without a verification tick. Read the listing before installing.