# lookupAddress

A read tool on the MCP Ethers Wallet MCP server.

Agent View of the PolicyLayer registry record for `lookupAddress`. HTML page: https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/lookupaddress

## Facts

- Tool: `lookupAddress`
- Server: MCP Ethers Wallet (`crazyrabbitltc/mcp-ethers-server`) — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server.md
- Homepage: https://github.com/crazyrabbitLTC/mcp-ethers-server
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "lookupAddress",
    "arguments": {}
  }
}
```

## Why lookupAddress is rated Low

This tool performs a data retrieval operation ('lookup') with no indication of state modification, execution, deletion, or financial transaction. It queries blockchain or wallet data and returns results without side effects. Despite the empty description, the name and context strongly indicate a Read-category tool.

From the tool's own definition: "Tool name 'lookupAddress' indicates a lookup/query operation. Context shows this server includes blockchain interaction tools; address lookup typically resolves blockchain addresses to metadata or associated data."

## Use case

AI agents call lookupAddress to retrieve information from MCP Ethers Wallet without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches MCP Ethers Wallet:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "lookupAddress": {}
  }
}
```

## Other tools on MCP Ethers Wallet (68)

- `contractCall` — Execute — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/contractcall.md
- `prepareContractTransaction` — Execute — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/preparecontracttransaction.md
- `prepareERC1155SetApprovalForAll` — Execute — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/prepareerc1155setapprovalforall.md
- `prepareERC721SetApprovalForAll` — Execute — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/prepareerc721setapprovalforall.md
- `signMessage` — Execute — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/signmessage.md
- `approveERC20` — Financial — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/approveerc20.md
- `approveNFT` — Financial — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/approvenft.md
- `ethSign` — Financial — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/ethsign.md
- `prepareERC1155BatchTransfer` — Financial — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/prepareerc1155batchtransfer.md
- `prepareERC20Approval` — Financial — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/prepareerc20approval.md
- `prepareTransaction` — Financial — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/preparetransaction.md
- `safeBatchTransferERC1155` — Financial — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/safebatchtransfererc1155.md
- `safeTransferERC1155` — Financial — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/safetransfererc1155.md
- `safeTransferERC721` — Financial — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/safetransfererc721.md
- `sendSignedTransaction` — Financial — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/sendsignedtransaction.md
- `sendTransaction` — Financial — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/sendtransaction.md
- `sendTransactionWithOptions` — Financial — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/sendtransactionwithoptions.md
- `transferERC20` — Financial — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/transfererc20.md
- `transferERC721` — Financial — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/transfererc721.md
- `transferFromERC20` — Financial — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/transferfromerc20.md
- `transferNFT` — Financial — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/transfernft.md
- `loadWallet` — Other — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/loadwallet.md
- `checkWalletExists` — Read — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/checkwalletexists.md
- `erc1155_balanceOf` — Read — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/erc1155-balanceof.md
- `erc1155_balanceOfBatch` — Read — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/erc1155-balanceofbatch.md
- `erc1155_uri` — Read — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/erc1155-uri.md
- `erc20_balanceOf` — Read — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/erc20-balanceof.md
- `erc20_getTokenInfo` — Read — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/erc20-gettokeninfo.md
- `erc721_balanceOf` — Read — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/erc721-balanceof.md
- `erc721_tokenURI` — Read — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/erc721-tokenuri.md
- …and 38 more: https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=crazyrabbitltc-mcp-ethers-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/crazyrabbitltc-mcp-ethers-server