bns_lookup

Look up a BNS name to resolve its Stacks address.

SERVERBitcoin wallet MCP server SOURCEmarkmhendrickson/mcp-server-bitcoin

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/markmhendrickson-mcp-server-bitcoin/bns-lookup.md

WHAT IT DOES

What bns_lookup does on Bitcoin wallet MCP server

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

RISK

Why bns_lookup is rated Low

This is a straightforward lookup/resolution function that queries the Bitcoin Naming Service to retrieve address information. It has no side effects, does not move funds, does not execute arbitrary code, and does not modify or delete data. It is purely informational.

From the tool's definition Tool name 'bns_lookup' and description 'Look up a BNS name to resolve its Stacks address' indicates a query operation that retrieves/resolves data without modifying state or executing code.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs bns_lookup safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Bitcoin wallet MCP server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For bns_lookup, this is the rule to start with:

bns_lookup Allowed

bns_lookup is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

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

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Bitcoin wallet MCP server, apply this rule, and every bns_lookup call is checked against it from then on.

FAQ

Questions about bns_lookup

What does the bns_lookup tool do? +

Look up a BNS name to resolve its Stacks address. It is categorised as a Read tool in the Bitcoin wallet MCP server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on bns_lookup? +

Register the Bitcoin wallet MCP server MCP server in PolicyLayer and add a rule for bns_lookup: 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 wallet MCP server. Nothing to install.

What risk level is bns_lookup? +

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

Can I rate-limit bns_lookup? +

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

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

bns_lookup is provided by the Bitcoin wallet MCP server MCP server (markmhendrickson/mcp-server-bitcoin). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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