btc_get_fees

Get recommended fee rates from mempool.space for all tiers:

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-get-fees.md

WHAT IT DOES

What btc_get_fees does on Bitcoin wallet MCP server

AI agents call btc_get_fees 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_get_fees is rated Low

This tool retrieves fee rate data from an external service (mempool.space) without side effects. It does not send funds, modify wallet state, or execute transactions. It is a pure read operation that provides informational data to support transaction planning. Severity is low because misuse cannot cause financial loss or data damage on its own.

From the tool's definition Tool name 'btc_get_fees' and description 'Get recommended fee rates from mempool.space for all tiers' indicate data retrieval only. No modification, deletion, or financial transaction occurs—only querying public fee rate information.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

btc_get_fees Allowed

btc_get_fees 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_get_fees": {}
  }
}

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_get_fees call is checked against it from then on.

FAQ

Questions about btc_get_fees

What does the btc_get_fees tool do? +

Get recommended fee rates from mempool.space for all tiers:. 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_get_fees? +

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

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

Can I rate-limit btc_get_fees? +

Yes. Add a rate_limit block to the btc_get_fees 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_get_fees completely? +

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

btc_get_fees 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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