Payments for agents for AI agents
4 APIs compared on price, free tier, MCP support and real usage. Prices from the vendors' pricing pages, checked Oct 9, 2026.
Free to start
1 of 4
Coinbase x402 (CDP Facilitator)
Official MCP server
4 of 4
plug straight into Claude Code, Cursor and others
| API | Free | Price | SDK downloads / wk | GitHub stars | MCP |
|---|---|---|---|---|---|
| Coinbase x402 (CDP Facilitator) HTTP 402 payment protocol letting agents pay per request in stablecoins; Coinbase verifies and settles. |
First 1,000 onchain facilitator transactions/month | $1 / 1k requests · free tier | 411K | 6,692 | MCP |
| Stripe (Agent Toolkit and MCP) Lets agents create payment links, invoices and customers, and charge for AI usage via Stripe. |
— | 2.9% + 30c per successful domestic card transaction (US standard) | 21.3K | 1,866 | MCP |
| PayPal Agent Toolkit Toolkit and MCP server that let agents create orders, invoices and subscriptions through PayPal APIs. |
— | PayPal Checkout 3.49% + fixed fee; standard card payments 2.99% +... | 1,193 | 196 | MCP |
| Skyfire Identity (Know Your Agent) and payment tokens so agents can pay sellers and be verified. |
— | not published | — | — | MCP |
Other categories
Web search APIs Scraping and crawling Browser automation (cloud) Code sandboxes Memory for agents Vector databases LLM gateways and routers Email sending Voice (speech-to-text Blockchain RPC and node providers DEX swap and liquidity APIs Crypto market and on-chain data 3D model generation Image generation APIs Sound effects and music generation Video generation APIs