Low Risk

brc20_transfer_inscriptions_by_address

Returns all unspent BRC20 transfer inscriptions residing at the address. This endpoint is critical for applications facilitating token transfers, as it identifies transfer-eligible inscriptions.

How to control brc20_transfer_inscriptions_by_address ↓

What brc20_transfer_inscriptions_by_address does on Maestro MCP Server

AI agents call brc20_transfer_inscriptions_by_address 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.

Low Risk

Why brc20_transfer_inscriptions_by_address needs a policy

This tool only retrieves/queries data about BRC20 transfer inscriptions at a given address. It identifies transfer-eligible inscriptions but does not initiate any transfer or modify any state. Pure read operation with low blast radius.

From the tool's definition Returns all unspent BRC20 transfer inscriptions residing at the address

Documented attack patterns abuse exactly the kind of access brc20_transfer_inscriptions_by_address gives an agent:

How to control brc20_transfer_inscriptions_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 brc20_transfer_inscriptions_by_address:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "brc20_transfer_inscriptions_by_address": {}
  }
}

brc20_transfer_inscriptions_by_address is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

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

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Questions about brc20_transfer_inscriptions_by_address

What does the brc20_transfer_inscriptions_by_address tool do? +

Returns all unspent BRC20 transfer inscriptions residing at the address. This endpoint is critical for applications facilitating token transfers, as it identifies transfer-eligible inscriptions. 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 brc20_transfer_inscriptions_by_address? +

Register the Maestro MCP Server MCP server in PolicyLayer and add a rule for brc20_transfer_inscriptions_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 brc20_transfer_inscriptions_by_address? +

brc20_transfer_inscriptions_by_address is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit brc20_transfer_inscriptions_by_address? +

Yes. Add a rate_limit block to the brc20_transfer_inscriptions_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 brc20_transfer_inscriptions_by_address completely? +

Set action: deny in the PolicyLayer policy for brc20_transfer_inscriptions_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 brc20_transfer_inscriptions_by_address? +

brc20_transfer_inscriptions_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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117 Maestro MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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