Liquid Agent: Money Tools for AI Agents

x402 money tools for AI agents: a one-signature USDC bridge from Base to 16 chains, the live Polymarket price to beat (BTC, ETH, SOL, XRP on 5m and 15m), a tokenized US stock basket from $1, and gas paid in USDC, plus free USDC and x402 debugging tools and a remote MCP server (28 tools). No account, no API key. The stock index: agent-native tokenized-stock index on Base. Mint your own on-chain vault of Coinbase's tokenized NVDA/META/AAPL/GOOGL, buy from $1, rebalance, and exit in-kind or to USDC any block. No oracle, no token, fully self-custodial. Reads free; transactions return unsigned calldata the agent signs.

Skills

• Discover the stock index
  Read the 4 tokenized-stock constituents with live prices, fees, and the flow.
  stocksindexpricesinvest
• Create your own vault
  Mint your own isolated ERC-4626 vault; you become the sole strategist.
  vaultcreateself-custody
• Buy the tokenized-stock basket
  Invest USDC from $1 into your vault; returns approve + deposit calldata to sign.
  buyinveststocksdeposit
• Rebalance to target weights
  Move your vault back toward its target allocation.
  rebalanceportfolio
• Exit any block
  Cash out to USDC, or take the raw pro-rata stock tokens in-kind (un-trappable).
  redeemexitwithdraw
• Get basket rebalancing signals (paid)
  PAID $0.007 USDC via x402: the whole basket's rebalancing signal in one call — per-stock returns, volatility, RSI, trend, relative strength, correlation, and an inverse-vol suggested weightsBps. Optional ?vault= adds your current-vs-suggested drift.
  signalsanalyticsrebalancestocksx402paid
• Gift and collectible search in a partner shop (paid)
  PAID, $0.001 per search over x402: GET /v1/shop/mintandmarquee/search?q=<what>&max=<usd> searches Mint & Marquee (custom 3D printed figurines, statues, keychains, bag tags; soccer, anime, crypto collections) and returns products with price, photo, a short description and a link to buy. Free shop info at GET /v1/shop/mintandmarquee.
  shoppinggiftscollectibles3d-printingmerchx402paid
• Polymarket crypto Up/Down: official price to beat, live (paid)
  PAID, $0.004 per call over x402: GET /v1/polymarket/<asset>-<5m|15m> for btc, eth, sol, xrp returns the OFFICIAL price to beat for the live window (the 60 s Chainlink TWAP before it starts, matched to every decimal against Polymarket's published values), the live Chainlink price and distance, seconds left, token ids and market prices. Polymarket's public API only shows the price to beat after the window closes. ?start=<unix> returns a past window's official outcome.
  polymarketprediction-marketsprice-to-beatchainlinkbitcoinethereumsolanaxrptradingx402paid
• Bridge USDC from Base to 16 chains, or Arc to Base, with one x402 signature (paid)
  PAID, one x402 payment: the one-signature USDC bridge for x402 agents. GET /v1/bridge?from=base&to=arc&amount=1 (pay on Base) or ?from=arc&to=base (pay on Arc); the 402 is the exact price (about 1.035 USDC to receive 1 on Arc); sign one EIP-3009 payment and repeat the call; exactly the requested amount arrives at your own address in about 20 s via Circle CCTP. Add ref=<your address> to earn 20% of the fee on-chain. Free quote: /v1/bridge/quote.
  bridgeusdccctpcross-chainarcbasex402paidreferral
• Sponsor gas for a smart-wallet transaction (paid, x402)
  PAID from $0.03 USDC via x402: an ERC-4337 paymaster for EntryPoint v0.8 on Base and Polygon (chainId: 137 for Polygon); pay the fee in USDC on Base or Polygon. On Solana, POST /v1/gas/solana {transaction} with our sponsor as fee payer and pay from $0.03 in Solana USDC. Standard ERC-7677 (pm_getPaymasterStubData / pm_getPaymasterData) at POST /v1/gas; plain EOAs POST {sender, calls} to the same /v1/gas (402 = quote, pay, sign, POST back the signed operation; EIP-7702; already delegated elsewhere: add redelegate:true, reversible). Any EntryPoint v0.8 smart account can bring its own operation: POST {userOperation} unsigned -> 402 -> pay -> sign -> POST back; we dry-run and submit it, no bundler. Price = max($0.03, 1.3× the op's gas cap), cap locked by signature.
  gaspaymastererc-4337erc-7677eip-7702x402paidbase

How to call

https://api.liquidagent.ai/

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