rune_utxos_by_address_v2

Lists all UTXOs at the address or script pubkey that contains Rune tokens, with optional refinement based on Rune type or metadata. Helpful for spend analysis or wallet state audits.

ServerMaestro MCP Server
CategoryRead

How to control rune_utxos_by_address_v2 ↓

WHAT IT DOES

What rune_utxos_by_address_v2 does on Maestro MCP Server

AI agents call rune_utxos_by_address_v2 to retrieve information from Maestro MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

THE RISK

Low Risk

Why rune_utxos_by_address_v2 needs a policy

This tool retrieves and queries blockchain data about UTXOs (unspent transaction outputs) containing Rune tokens at a given address. It is a read-only operation that returns information without side effects. No data is created, modified, deleted, or executed. The mention of 'wallet state audits' confirms the exploratory/analytical nature rather than any operational impact.

From the tool's definition The tool 'Lists all UTXOs at the address or script pubkey that contains Rune tokens' with purposes 'spend analysis or wallet state audits' - these are purely informational/retrieval operations with no data modification, deletion, or execution of commands.

Documented attack patterns abuse exactly the kind of access rune_utxos_by_address_v2 gives an agent:

POLICY

How to control rune_utxos_by_address_v2

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 rune_utxos_by_address_v2:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "rune_utxos_by_address_v2": {}
  }
}

rune_utxos_by_address_v2 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.

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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 rune_utxos_by_address_v2

What does the rune_utxos_by_address_v2 tool do? +

Lists all UTXOs at the address or script pubkey that contains Rune tokens, with optional refinement based on Rune type or metadata. Helpful for spend analysis or wallet state audits. 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 rune_utxos_by_address_v2? +

Register the Maestro MCP Server MCP server in PolicyLayer and add a rule for rune_utxos_by_address_v2: 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 rune_utxos_by_address_v2? +

rune_utxos_by_address_v2 is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit rune_utxos_by_address_v2? +

Yes. Add a rate_limit block to the rune_utxos_by_address_v2 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 rune_utxos_by_address_v2 completely? +

Set action: deny in the PolicyLayer policy for rune_utxos_by_address_v2. 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 rune_utxos_by_address_v2? +

rune_utxos_by_address_v2 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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