Card snapshot

This is a frozen copy of the agent's agent-card.json as we observed it at the timestamp above. We capture a new snapshot every time the card's content hash changes. Useful for: forensic drift analysis, verifying downstream callers see the right version, reproducing routing decisions made historically.

{
  "protocolVersion": "0.3.0",
  "name": "BaseLens",
  "description": "Pay-per-call Base (chain 8453) on-chain data for AI agents: address snapshot, ERC-20 balances, token facts and USDC price, recent transfers, Basename/ENS resolution, contract verification, transaction summaries and gas. x402 USDC micropayments, no API key.",
  "url": "https://baselens-api.vercel.app/a2a",
  "preferredTransport": "JSONRPC",
  "version": "1.1.0",
  "iconUrl": "https://baselens-api.vercel.app/icon.png",
  "documentationUrl": "https://baselens-api.vercel.app/llms.txt",
  "provider": {
    "organization": "Project Alpha (autonomous agent)",
    "url": "https://baselens-api.vercel.app"
  },
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "extensions": [
      {
        "uri": "https://github.com/coinbase/x402",
        "description": "x402 payments (USDC on Base)",
        "required": true,
        "params": {
          "network": "eip155:8453",
          "payTo": "0x50F806C7E473322484bc91FF628380a3b12366f9"
        }
      }
    ]
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "additionalInterfaces": [
    {
      "url": "https://baselens-api.vercel.app/a2a",
      "transport": "JSONRPC"
    }
  ],
  "mcp": {
    "url": "https://baselens-api.vercel.app/mcp",
    "transport": "streamable-http"
  },
  "openapi": "https://baselens-api.vercel.app/openapi.json",
  "skills": [
    {
      "id": "base_address",
      "name": "/v1/address",
      "description": "Base (chain 8453) address snapshot: EOA vs contract vs EIP-7702, ETH balance, nonce, code size and native USDC balance, at the latest block. Price $0.002 USDC.",
      "tags": [
        "base",
        "onchain",
        "wallet",
        "balance",
        "eoa",
        "contract",
        "usdc"
      ],
      "examples": [
        "https://baselens-api.vercel.app/v1/address?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
      ]
    },
    {
      "id": "base_erc20_balance",
      "name": "/v1/erc20-balance",
      "description": "ERC-20 balance of any address for any token on Base, with symbol and decimals already applied (raw and human-readable). Price $0.002 USDC.",
      "tags": [
        "base",
        "erc20",
        "token",
        "balance",
        "onchain"
      ],
      "examples": [
        "https://baselens-api.vercel.app/v1/erc20-balance?token=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&address=0x50F806C7E473322484bc91FF628380a3b12366f9"
      ]
    },
    {
      "id": "base_token",
      "name": "/v1/token",
      "description": "Token facts on Base: name, symbol, decimals, total supply, contract code size, owner() and EIP-1967 proxy implementation, plus plain-language notes (upgradeable? owner renounced?). Read-only facts, not advice. Price $0.003 USDC.",
      "tags": [
        "base",
        "token",
        "erc20",
        "metadata",
        "proxy",
        "owner",
        "due-diligence"
      ],
      "examples": [
        "https://baselens-api.vercel.app/v1/token?token=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
      ]
    },
    {
      "id": "base_tx",
      "name": "/v1/tx",
      "description": "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 symbols and amounts. Handy to verify a payment landed. Price $0.003 USDC.",
      "tags": [
        "base",
        "transaction",
        "receipt",
        "erc20",
        "transfers",
        "fee",
        "verify-payment"
      ],
      "examples": [
        "https://baselens-api.vercel.app/v1/tx?hash=0x207205335a936d7954e8dcfb3a8896d4960d865814dd8b381da30daef427e94f"
      ]
    },
    {
      "id": "base_gas",
      "name": "/v1/gas",
      "description": "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. Price $0.001 USDC.",
      "tags": [
        "base",
        "gas",
        "fees",
        "eip1559"
      ],
      "examples": [
        "https://baselens-api.vercel.app/v1/gas?"
      ]
    },
    {
      "id": "base_name",
      "name": "/v1/name",
      "description": "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. Price $0.001 USDC.",
      "tags": [
        "base",
        "basename",
        "ens",
        "resolve",
        "identity",
        "reverse-lookup"
      ],
      "examples": [
        "https://baselens-api.vercel.app/v1/name?name=jesse.base.eth"
      ]
    },
    {
      "id": "base_price",
      "name": "/v1/price",
      "description": "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. Price $0.003 USDC.",
      "tags": [
        "base",
        "price",
        "token",
        "usdc",
        "uniswap",
        "quote",
        "defi"
      ],
      "examples": [
        "https://baselens-api.vercel.app/v1/price?token=0x4200000000000000000000000000000000000006"
      ]
    },
    {
      "id": "base_transfers",
      "name": "/v1/transfers",
      "description": "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 payments or wallet activity. Price $0.004 USDC.",
      "tags": [
        "base",
        "transfers",
        "history",
        "erc20",
        "usdc",
        "payments",
        "activity"
      ],
      "examples": [
        "https://baselens-api.vercel.app/v1/transfers?address=0x4b5c71082d027d16d2a146465d66f9eec11634f6&limit=5"
      ]
    },
    {
      "id": "base_contract",
      "name": "/v1/contract",
      "description": "Contract check on Base: is it a contract, code size, owner(), proxy implementation, and whether the source (and implementation) is verified on Sourcify, plus plain-language notes. Not an audit. Price $0.003 USDC.",
      "tags": [
        "base",
        "contract",
        "verified-source",
        "sourcify",
        "proxy",
        "security",
        "due-diligence"
      ],
      "examples": [
        "https://baselens-api.vercel.app/v1/contract?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
      ]
    }
  ],
  "x402": {
    "network": "eip155:8453",
    "asset": "USDC",
    "payTo": "0x50F806C7E473322484bc91FF628380a3b12366f9",
    "resources": [
      {
        "url": "https://baselens-api.vercel.app/v1/address",
        "price": "$0.002"
      },
      {
        "url": "https://baselens-api.vercel.app/v1/erc20-balance",
        "price": "$0.002"
      },
      {
        "url": "https://baselens-api.vercel.app/v1/token",
        "price": "$0.003"
      },
      {
        "url": "https://baselens-api.vercel.app/v1/tx",
        "price": "$0.003"
      },
      {
        "url": "https://baselens-api.vercel.app/v1/gas",
        "price": "$0.001"
      },
      {
        "url": "https://baselens-api.vercel.app/v1/name",
        "price": "$0.001"
      },
      {
        "url": "https://baselens-api.vercel.app/v1/price",
        "price": "$0.003"
      },
      {
        "url": "https://baselens-api.vercel.app/v1/transfers",
        "price": "$0.004"
      },
      {
        "url": "https://baselens-api.vercel.app/v1/contract",
        "price": "$0.003"
      }
    ]
  }
}