Base DeFi (base_mcp_*)

The Base rail gives your AI a real wallet on Base mainnet (chainId 8453) — balances, transfers, swaps, and yield data. 11 tools, prefix base_mcp_*.

Your MCP wallet is generated locally on first use and stored in ~/.noelclaw — the same address is used on Base and Robinhood Chain.

Tools

Tool	What it does
base_mcp_status	Wallet address, chain info, live ETH price, gas. Start any Base session here.
base_mcp_network	Real-time network stats: ETH/USD, gas in gwei, latest block. No wallet needed.
base_mcp_balance	Every ERC-20 you hold, enumerated from the Base Blockscout indexer — not a fixed allowlist. Flags impostor tokens (symbol matches a known asset but the contract address doesn't).
base_mcp_send	Send ETH or any ERC-20 to an address or basename (jesse.base.eth). Irreversible; requires confirm: true.
base_mcp_estimate	Preview a swap's output and price impact. Always call before swapping.
base_mcp_swap	Swap via 0x Protocol Permit2 (signature-based, no separate approval tx). Supported: ETH, USDC, USDT, DAI, WETH. Refuses when price impact exceeds maxPriceImpactPct (default 3%).
base_mcp_resolve	Basename ↔ address resolution via Coinbase's resolver, both directions.
base_mcp_yield_vaults	Morpho vaults on Base ranked by APY.
base_mcp_lending_rates	Moonwell markets: supply APY, borrow APY, liquidity, utilization per asset.
base_mcp_lend	Best lending venues for a token (Morpho + Moonwell), ranked by APY × TVL safety. Returns instructions only — never broadcasts a deposit.
base_mcp_deposit_guide	Step-by-step manual deposit instructions for a specific Morpho vault.

Related tools outside the prefix: get_base_token_data (token market data on Base), score_token / check_token / compare_tokens (scanner), get_wallet_address, get_wallet_balance, wallet_sign_message.

Safety model

• Estimate → confirm → execute. base_mcp_swap and base_mcp_send require confirm: true. A bare estimate never moves funds.
• Price-impact guard. Swaps refuse when impact exceeds the cap (default 3%) unless you explicitly raise it.
• Impostor detection. Because balances are enumerated from the indexer, base_mcp_balance sees scam airdrops and symbol-spoofed tokens — and flags any "USDC"-style token whose contract is not the canonical one (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913).
• Lending is read-only. Yield tools return data and instructions; deposits are always done by you in the protocol's own UI.

Example session

you:  what's my balance on base?
ai:   → base_mcp_balance
      0.0042 ETH · 12.50 USDC (canonical) · ⚠ 1 flagged token (fake "USDC" at 0x3462…)

you:  swap 5 usdc to eth
ai:   → base_mcp_estimate   (shows rate + price impact)
      → asks you to confirm
      → base_mcp_swap { confirm: true }
      ✓ tx hash + Basescan link