btc_sign_message

Sign a plain text message using Bitcoin message signing.

SERVERAibtc SOURCEaibtcdev/aibtc-mcp-server

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity verified Pull the record →

This record as markdown: /tools/io-github-aibtcdev-mcp-server/btc-sign-message.md

WHAT IT DOES

What btc_sign_message does on Aibtc

AI agents invoke btc_sign_message to trigger actions in Aibtc. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why btc_sign_message is rated High

Signing a message with a Bitcoin private key is a cryptographic operation that uses sensitive key material. It executes a signing operation that could be used to authorize actions or prove identity on the Bitcoin network. While it doesn't directly move funds, misuse could facilitate fraudulent authorization or identity impersonation.

From the tool's definition Sign a plain text message using Bitcoin message signing

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs btc_sign_message safely

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

btc_sign_message Rate-limited

btc_sign_message stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "btc_sign_message": {
      "limits": [
        {
          "counter": "btc_sign_message_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Aibtc, apply this rule, and every btc_sign_message call is checked against it from then on.

FAQ

Questions about btc_sign_message

What does the btc_sign_message tool do? +

Sign a plain text message using Bitcoin message signing. It is categorised as a Execute tool in the Aibtc MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on btc_sign_message? +

Register the Aibtc MCP server in PolicyLayer and add a rule for btc_sign_message: 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 Aibtc. Nothing to install.

What risk level is btc_sign_message? +

btc_sign_message is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit btc_sign_message? +

Yes. Add a rate_limit block to the btc_sign_message 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_sign_message completely? +

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

btc_sign_message is provided by the Aibtc MCP server (aibtcdev/aibtc-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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