# contractCall

A execute tool on the MCP Ethers Wallet MCP server.

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

## Facts

- Tool: `contractCall`
- 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: Execute (High risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

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

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

## Why contractCall is rated High

The name 'contractCall' strongly implies executing a smart contract function call on the Ethereum network. Smart contract calls can have arbitrary side effects including transferring funds, modifying state, or triggering other contracts. The server description explicitly mentions 'execute smart contract operations'.

From the tool's own definition: "Tool name 'contractCall' on a server described as able to 'execute smart contract operations'"

## Use case

AI agents invoke contractCall to trigger actions in MCP Ethers Wallet. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

## Recommended policy (PolicyLayer)

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

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "contractCall": {
      "limits": [
        {
          "counter": "contractcall_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on MCP Ethers Wallet (68)

- `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
- `formatEther` — Read — https://policylayer.com/tools/crazyrabbitltc-mcp-ethers-server/formatether.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