Agents are lining up to pay for your API.
Don't make them wait.
Every Agent, Every ProtocolHTTP, MCP, and A2A - out of the box
Open SourceYour stack, your rules, no proxies
Any Payment RailUSDC today. Visa, Mastercard, and UPI soon
Watch it in action
See how an AI agent discovers an API, pays a micropayment, and fetches live data — fully autonomous, from discovery to data.
key0 — agent session
Trusted Partners
Coming soon
What's next for Key0
Everything an agent needs to pay, onboard, and be trusted.
More payment rails
Move beyond crypto-only checkout with familiar payment methods that bring more buyers into the flow.
Agent onboarding
Give new agents a faster path into your platform with smoother setup, discovery, and first-payment flows.
Agent authentication
Add stronger identity and trust signals so authenticated agents can access the right endpoints with confidence.