Crypto Agent Payments

Crypto Wallets & Payments for AI Agents

Create wallets, transfer tokens, and enable payments between agents. Perfect for bug bounty programs, rewards systems, and agent-to-agent transactions.

What This Enables

• Create wallets - Generate ERC20-compatible wallets with secure key storage
• Transfer tokens - Send ETH, USDC, or any ERC20 token to any address
• Swap tokens - Exchange tokens across 13 chains with best rates
• Earn referrer fees - Get 80% of extra swap fees by referring users
• Agent payments - Bug bounties, rewards programs, automated payouts

MCP Server Setup

For Moltbot/OpenClaw, configure via mcporter:

mcporter config add onlyswaps --command "npx -y @onlyswaps/mcp-server@latest stdio" --transport stdio

For Claude Desktop, add to MCP config:

{
  "mcpServers": {
    "onlyswaps": {
      "command": "npx",
      "args": ["-y", "@onlyswaps/mcp-server@latest", "stdio"]
    }
  }
}

Available Tools

Read-Only (no wallet needed)

Wallet Required (need PRIVATE_KEY)

Earn Fees as a Referrer

AI agents can earn fees by setting referrerAddress and extraFeeBps on swaps:

Example: With extraFeeBps: 10, on a $1000 swap:

• Referrer earns: $0.80 (8 bps)
• User pays: $3 total (0.30%)

Note: Referrer fees only work for ERC20 swaps. Native token swaps (ETH, BNB) don't support referrer fees.

IMPORTANT: Private Key Handling

For wallet operations, you MUST have PRIVATE_KEY set.

If the user wants to create a wallet, transfer, or swap:

1. First ask: "Do you have an existing wallet private key, or should I create a new one?"
2. If new: Use setup_wallet to generate one
3. If existing: Ask user to provide PRIVATE_KEY and set it in environment

To call tools with PRIVATE_KEY:

PRIVATE_KEY=0x... mcporter call onlyswaps.check_setup chainId=8453

Amount Format

Different tools use different formats:

Wei conversion:

• 1 ETH = 1000000000000000000 (18 zeros)
• 0.001 ETH = 1000000000000000 (15 zeros)
• 1 USDC = 1000000 (6 decimals)

Quick Examples

IMPORTANT: Use function call syntax with quoted strings!

Get a swap quote (no wallet needed)

mcporter call 'onlyswaps.get_quote(fromToken: "0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE", toToken: "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913", amount: "1000000000000000", chainId: 8453)'

Check any address portfolio (no wallet needed)

mcporter call 'onlyswaps.get_portfolio(userAddress: "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045")'

Create a new wallet

mcporter call onlyswaps.setup_wallet
# Returns: address and private key - SAVE THE PRIVATE KEY!

Check wallet setup (requires PRIVATE_KEY)

PRIVATE_KEY=0x... mcporter call 'onlyswaps.check_setup(chainId: 8453)'

Transfer tokens (requires PRIVATE_KEY + funded wallet)

PRIVATE_KEY=0x... mcporter call 'onlyswaps.transfer(tokenAddress: "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913", toAddress: "0xRecipientAddress", amount: "1000000", chainId: 8453)'

Swap with referrer fee (earn fees as an agent)

PRIVATE_KEY=0x... mcporter call 'onlyswaps.swap(fromToken: "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913", toToken: "ETH", amount: "100000000", chainId: 8453, referrerAddress: "0xYourAgentWallet", extraFeeBps: 10)'

Supported Chains

Common Token Addresses

Security Notes

• Private keys are stored locally, never transmitted
• Always verify addresses before sending
• Start with small test amounts

Links

• npm: @onlyswaps/mcp-server
• Docs: onlyswaps.fyi

Built by OnlySwaps 🦞