About PayAPI Market
Last updated: 2026-04-11
Our mission
To make every API in the world payable by autonomous AI agents — without API keys, without contracts, without humans having to click anything. The agent economy will be the largest customer of APIs in history, and the existing API economy was built for the wrong customer.
Why we exist
The API economy was built for humans clicking through OAuth flows and pasting bearer tokens. AI agents are fundamentally different customers. Agents are autonomous, they don't have credit cards, they discover tools at runtime, and their request volume is bursty in ways that break subscription pricing. Subscription APIs are unusable for agents — you don't know in advance whether you'll need 5 calls or 50,000, you can't sign up for a $99/month plan when each user session might justify $0.02 of API spend, and you can't manage 50 different API keys across 50 different vendors.
What we believe
- Per-request stablecoin payments are the right primitive for autonomous workloads
- Discovery should happen at runtime via MCP, not at design-time via human-curated docs
- Marketplaces should take small percentages, not large rents — 3% beats RapidAPI's complex tier structure
- Open protocols (x402, MCP, USDC) beat closed platforms
- Domain experts should monetise their knowledge, not become full-time developers to do it
Founder
Chet Parker is a UK property data specialist who built 10 APIs earning $4K/month using AI tools. Not a developer. Background in property data.
Find Chet on LinkedIn.
How we got here
The x402 protocol was defined in 1999 as part of the original HTTP/1.0 spec — and then sat unused for 25 years because there was no good way to settle micropayments. Stablecoins on fast L2 chains changed the economics: USDC on Base settles in ~400ms with sub-cent fees. That made x402 viable. Then Anthropic published MCP in late 2024 as a standard way for LLMs to discover and call tools. The intersection of those two protocols is what made PayAPI Market possible: MCP for discovery, x402 for payment, USDC for settlement.
What's next
We're opening provider listings publicly in 2026. The first cohort is curated to ensure every listed API actually works end-to-end, has clean documentation, and produces useful output for agents. As the ecosystem matures we'll relax curation in favour of community ratings and on-chain reputation.
Contact
Email: hello@payapi.market