Aifinpay
@AiFinPay
Stripe for AI agents. Pay any HTTP API in stablecoins or native tokens on Polygon and Solana mainnet with one MCP call. Non-custodial, on-chain settlement, atomic 99/1 partner split. Five tools: payable_fetch, agent_address, agent_quote, pay_with_split, quote_split.
Overview
What is Aifinpay?
Aifinpay is a payment rail for autonomous AI agents that enables one-line payment to any x402-protected URL on Polygon or Solana mainnet. It is designed for developers building agentic systems who need non-custodial, on-chain settlement.
How to use Aifinpay?
Install the Python or Node SDK via pip install aifinpay-agent --pre or npm install @aifinpay/agent@alpha. For Claude Desktop or Cursor, configure the MCP server with npx @aifinpay/mcp and optionally set AIFINPAY_AGENT_SECRET and AIFINPAY_MAX_USD environment variables.
Key features of Aifinpay
- One-line
agent.pay()for x402‑gated APIs. - Non‑custodial on‑chain settlement on Polygon and Solana.
- Fee‑on‑top atomic split via AiFinPaySplitter contract.
- MCP server with five payment tools for LLMs.
- Framework integrations for OpenAI, LangChain, CrewAI, etc.
- Live since 2026 with verified mainnet payments.
Use cases of Aifinpay
- Autonomous agents paying for AI inference APIs (e.g., Llama‑3.3‑70B on io.net).
- Agents purchasing search results from Exa without human intervention.
- Self‑funding agent loops that run unattended on AutoGPT.
- Multi‑agent CrewAI crews buying tools and data as they work.
- Any AI agent monetizing or gating its own API via x402.
FAQ from Aifinpay
What is the x402 protocol?
x402 is a standard for HTTP 402 Payment Required responses; Aifinpay agents automatically sign and pay these.
Is it non‑custodial?
Yes, agents hold their own private keys and sign payments directly.
Which blockchains are supported?
Polygon (mainnet) with a deployed contract suite, and Solana (
