app.vercel.baselens-api/baselens

up checked 2026-11-11T00:38:01.538Z

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Publisher-provided title

BaseLens

Publisher-provided description

Base on-chain data for agents: balances, prices, transfers, Basenames, contracts. x402 pay-per-call.

Summary by lookupd

Query Base chain data for agents: balances, token prices, transfers, gas, Basenames, and contract checks via pay-per-call.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http baselens https://baselens-api.vercel.app/mcp

Codex, remote (streamable-http)

codex mcp add baselens --url https://baselens-api.vercel.app/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "baselens": {
      "url": "https://baselens-api.vercel.app/mcp"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (11 tools)

Publisher-provided text

• base_address Base (chain 8453) address snapshot: EOA vs contract vs EIP-7702, ETH balance, nonce, code size and native USDC balance, at the latest block. Costs $0.002 USDC o
• base_erc20_balance ERC-20 balance of any address for any token on Base, with symbol and decimals already applied (raw and human-readable). Costs $0.002 USDC on Base via x402.
• base_token Token facts on Base: name, symbol, decimals, total supply, contract code size, owner() and EIP-1967 proxy implementation, plus plain-language notes (upgradeable
• base_tx Human-readable summary of a Base transaction: status, block time, from/to, value, total fee (incl. L1 fee), and decoded ERC-20 Transfer events with token symbol
• base_gas Current Base gas: base fee, gas price, suggested EIP-1559 max fee and priority fee (gwei), block fullness, and cost of a plain ETH transfer. Costs $0.001 USDC o
• base_name Resolve a Basename (name.base.eth) or ENS name to its Base/Ethereum address, or reverse-resolve an address to its primary ENS/Basename. Includes avatar record.
• base_price On-chain USDC price of any Base ERC-20: executable Uniswap v3 quote for 1 whole token (direct USDC pool or via WETH, best fee tier). No third-party price API. C
• base_transfers Recent ERC-20 transfers in and out of an address on Base for up to 5 tokens (default USDC), newest first, over the last ~10k blocks (max 30k). Check incoming pa
• base_contract Contract check on Base: is it a contract, code size, owner(), proxy implementation, and whether the source (and implementation) is verified on Sourcify, plus pl
• base_free_gas_sample Free sample: latest Base block number and base fee (gwei). Use it to test the connection.
• base_catalog Lists every BaseLens tool with price, inputs and the equivalent x402 HTTP URL.

Details

• Version: 1.1.0
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 328 ms
• First indexed: 2026-11-01T08:51:55.108Z
• Last seen in registry: 2026-11-01T08:51:55.108Z
• Website: https://baselens-api.vercel.app

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• Last crawl: 2026-11-11T15:38:39.561Z
• API base: https://api.lookupd.com
• MCP URL: https://api.lookupd.com/mcp