getAllNetworks

Get information about all available blockchain networks. Use this to identify network names, chain IDs, and RPC URLs that can be used with other Ethereum tools. When using other tools with a

ServerMCP Ethers Wallet
CategoryRead

How to control getAllNetworks ↓

WHAT IT DOES

What getAllNetworks does on MCP Ethers Wallet

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

THE RISK

Low Risk

Why getAllNetworks needs a policy

This tool retrieves and queries network configuration data without creating, modifying, deleting, or executing any operations. It is informational only and produces no side effects on blockchain state or wallet assets. The low severity reflects minimal risk even if an AI agent calls it unexpectedly—it simply returns public network information.

From the tool's definition Tool name 'getAllNetworks' and description 'Get information about all available blockchain networks' indicate retrieval of network metadata (names, chain IDs, RPC URLs) with no side effects.

Documented attack patterns abuse exactly the kind of access getAllNetworks gives an agent:

POLICY

How to control getAllNetworks

PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Ethers Wallet, and nothing reaches the server without passing your rules. This is the rule we recommend for getAllNetworks:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "getAllNetworks": {}
  }
}

getAllNetworks is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register MCP Ethers Wallet — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

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EXPLORE

Related tools and policies

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Go deeper

Roll out MCP under one policy → Per-person scoped tokens, one central policy, and full audit across every server your team connects.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →
PolicyLayer vs alternatives → How deterministic, per-call MCP policy compares with gateways, identity layers, and authorisation platforms.

FAQ

Questions about getAllNetworks

What does the getAllNetworks tool do? +

Get information about all available blockchain networks. Use this to identify network names, chain IDs, and RPC URLs that can be used with other Ethereum tools. When using other tools with a. It is categorised as a Read tool in the MCP Ethers Wallet MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on getAllNetworks? +

Register the MCP Ethers Wallet MCP server in PolicyLayer and add a rule for getAllNetworks: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches MCP Ethers Wallet. Nothing to install.

What risk level is getAllNetworks? +

getAllNetworks is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit getAllNetworks? +

Yes. Add a rate_limit block to the getAllNetworks rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block getAllNetworks completely? +

Set action: deny in the PolicyLayer policy for getAllNetworks. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides getAllNetworks? +

getAllNetworks is provided by the MCP Ethers Wallet MCP server (crazyrabbitltc/mcp-ethers-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every MCP Ethers Wallet tool call.

Start from MCP Ethers Wallet, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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