btc_list_utxos

List UTXOs across all wallet address types.

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/btc-list-utxos.md

WHAT IT DOES

What btc_list_utxos does on Bitcoin wallet MCP server

AI agents call btc_list_utxos 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 btc_list_utxos is rated Low

This tool performs a read-only query of wallet state (listing UTXOs). It retrieves data about available funds but does not move money, execute transactions, modify data, or delete anything. While it provides information useful for conducting financial operations, the tool itself is purely informational with no side effects.

From the tool's definition Tool name 'btc_list_utxos' with description 'List UTXOs across all wallet address types' indicates retrieval/query of unspent transaction outputs without modification or execution of transfers.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs btc_list_utxos 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 btc_list_utxos, this is the rule to start with:

btc_list_utxos Allowed

btc_list_utxos 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": {
    "btc_list_utxos": {}
  }
}

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 btc_list_utxos call is checked against it from then on.

FAQ

Questions about btc_list_utxos

What does the btc_list_utxos tool do? +

List UTXOs across all wallet address types. 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 btc_list_utxos? +

Register the Bitcoin wallet MCP server MCP server in PolicyLayer and add a rule for btc_list_utxos: 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 btc_list_utxos? +

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

Can I rate-limit btc_list_utxos? +

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

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

btc_list_utxos 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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