wallet_isAuthenticated

THE RISK

Low Risk

Why wallet_isAuthenticated needs a policy

This tool performs a read-only check of authentication status with no side effects, data modification, code execution, or financial operations. The low severity reflects minimal blast radius—an AI agent cannot misuse this to compromise funds or cause harm beyond potentially learning authentication state.

From the tool's definition Tool name 'wallet_isAuthenticated' and description 'Checks if the wallet user is authenticated' indicate a query operation that retrieves authentication status without modifying state or executing transactions.

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

POLICY

How to control wallet_isAuthenticated

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

policy.json

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

wallet_isAuthenticated 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 Bitcoin SV MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

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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 wallet_isAuthenticated

What does the wallet_isAuthenticated tool do? +

Checks if the wallet user is authenticated. It is categorised as a Read tool in the Bitcoin SV MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on wallet_isAuthenticated? +

Register the Bitcoin SV MCP Server MCP server in PolicyLayer and add a rule for wallet_isAuthenticated: 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 Bitcoin SV MCP Server. Nothing to install.

What risk level is wallet_isAuthenticated? +

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

Can I rate-limit wallet_isAuthenticated? +

Yes. Add a rate_limit block to the wallet_isAuthenticated 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 wallet_isAuthenticated completely? +

Set action: deny in the PolicyLayer policy for wallet_isAuthenticated. 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 wallet_isAuthenticated? +

wallet_isAuthenticated is provided by the Bitcoin SV MCP Server MCP server (b-open-io/bsv-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Bitcoin SV MCP Server tool call.

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

CHECK YOUR STACK →