# eth_getCode

Retrieves the code at a given Ethereum address

Agent View of the PolicyLayer registry record for `eth_getCode`. HTML page: https://policylayer.com/tools/0xkoda-eth-mcp/eth-getcode

## Facts

- Tool: `eth_getCode`
- Server: Ethereum RPC MCP Server (`0xkoda/eth-mcp`) — https://policylayer.com/tools/0xkoda-eth-mcp.md
- Homepage: https://github.com/0xKoda/eth-mcp
- Risk category: Read (Low risk)
- Registry record: grade A, 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": "eth_getCode",
    "arguments": {}
  }
}
```

## Why eth_getCode is rated Low

This tool only retrieves/queries smart contract bytecode from the Ethereum blockchain. It performs no modifications, deletions, or financial transactions. It is a passive information retrieval operation, fitting the Read category. Severity is low because retrieving publicly available blockchain data poses minimal risk even if misused by an AI agent.

From the tool's own definition: "Tool name 'eth_getCode' and description 'Retrieves the code at a given Ethereum address' indicate a query-only operation with no side effects. This is a standard JSON-RPC read method."

## Use case

AI agents call eth_getCode to retrieve information from Ethereum RPC MCP Server 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 Ethereum RPC MCP Server:

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

## Other tools on Ethereum RPC MCP Server (2)

- `eth_gasPrice` — Read — https://policylayer.com/tools/0xkoda-eth-mcp/eth-gasprice.md
- `eth_getBalance` — Read — https://policylayer.com/tools/0xkoda-eth-mcp/eth-getbalance.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=0xkoda-eth-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/0xkoda-eth-mcp