historical_satoshi_balance_by_address

THE RISK

Low Risk

Why historical_satoshi_balance_by_address needs a policy

This tool only queries and retrieves historical blockchain data about satoshi balances and USD pricing. It has no side effects—it does not create, modify, delete, or execute any operations. The action is purely informational Read category. Severity is low because exposure of historical balance information does not create immediate risk of financial loss or system compromise, though it could inform address monitoring.

From the tool's definition Tool name 'historical_satoshi_balance_by_address' and description 'Returns the historical satoshi balances, itemized by block and including USD price' indicate pure data retrieval with no modification, creation, deletion, or execution capabilities.

Documented attack patterns abuse exactly the kind of access historical_satoshi_balance_by_address gives an agent:

POLICY

How to control historical_satoshi_balance_by_address

PolicyLayer is an MCP gateway — it sits between your AI agents and Maestro MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for historical_satoshi_balance_by_address:

policy.json

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

historical_satoshi_balance_by_address is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Maestro MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

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EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
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FAQ

Questions about historical_satoshi_balance_by_address

What does the historical_satoshi_balance_by_address tool do? +

Returns the historical satoshi balances, itemized by block and including USD price. It is categorised as a Read tool in the Maestro MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on historical_satoshi_balance_by_address? +

Register the Maestro MCP Server MCP server in PolicyLayer and add a rule for historical_satoshi_balance_by_address: 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 Maestro MCP Server. Nothing to install.

What risk level is historical_satoshi_balance_by_address? +

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

Can I rate-limit historical_satoshi_balance_by_address? +

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

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

historical_satoshi_balance_by_address is provided by the Maestro MCP Server MCP server (maestro-org/maestro-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Maestro MCP Server tool call.

Start from Maestro MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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