btc_estimate_fee

Estimate transaction fee for given parameters.

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-estimate-fee.md

WHAT IT DOES

What btc_estimate_fee does on Bitcoin wallet MCP server

AI agents call btc_estimate_fee 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_estimate_fee is rated Low

The tool performs a read-only operation—estimating fees based on parameters—with no side effects. It does not move funds (Financial), execute code (Execute), delete data (Destructive), or create/modify persistent state (Write). Fee estimation is informational and reversible by nature.

From the tool's definition Tool name and description: 'Estimate transaction fee for given parameters.' This is a query/calculation operation that returns fee estimates without creating, modifying, deleting, or executing transactions.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

btc_estimate_fee Allowed

btc_estimate_fee 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_estimate_fee": {}
  }
}

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_estimate_fee call is checked against it from then on.

FAQ

Questions about btc_estimate_fee

What does the btc_estimate_fee tool do? +

Estimate transaction fee for given parameters. 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_estimate_fee? +

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

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

Can I rate-limit btc_estimate_fee? +

Yes. Add a rate_limit block to the btc_estimate_fee 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_estimate_fee completely? +

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

btc_estimate_fee 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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