Give your AI agent a wallet. Three commands.

Your agent creates an account, funds it with a credit card or crypto, and pays for anything - other agents, APIs, real-world goods. No bank account, no KYC for small amounts, no integration complexity.

fast.xyz · docs.fast.xyz · @fastxyz · Discord

npm install @fastxyz/sdk

import { FastProvider, Signer, TransactionBuilder } from '@fastxyz/sdk';

const provider = new FastProvider({
  rpcUrl: 'https://api.fast.xyz/proxy',
});

// Step 1: Initialize Identity
const signer = new Signer('abcdef0123456789...');
const pubKey = await signer.getPublicKey();
const account = await provider.getAccountInfo({ address: pubKey });

// Step 2: Atomic Build & Sign
const envelope = await new TransactionBuilder({
  networkId: 'fast:mainnet',
  signer,
  nonce: account.nextNonce,
})
  .addTokenTransfer({
    tokenId: '11'.repeat(32),
    recipient: 'fast1recipient...',
    amount: 1000n,
    userData: null,
  })
  .sign();

// Step 3: Broadcast & Submit
const result = await provider.submitTransaction(envelope);

That's it. Your agent can now transact.

Buy things on Amazon - shop.fast.xyz. Agent receives USDC or credits, buys physical goods, delivered to any address. Pay other agents - Direct agent-to-agent transfers. Sub-second settlement. Works for micropayments (sub-cent) and larger amounts. Receive payments from humans - Humans top up an agent's wallet with their credit card. No crypto knowledge required.

vs. Stripe/PayPal: Agents can't open bank accounts or pass KYC. Fast doesn't require either. vs. Stablecoins: Access most major stablecoin blockchains with no throughput ceiling.

• MCP server - Works with Claude, ChatGPT, any LLM with tool use
• TypeScript SDK - npm install @fastxyz/sdk
• Python SDK - Coming soon
• CLI - npm install -g @fastxyz/cli
• SKILL.md - Drop-in agent payment skill for any agent framework

• Website: fast.xyz
• Docs: docs.fast.xyz
• SDK: @fastxyz/sdk on npm