rpc_psbt_decode

Takes a signed PSBT hex and returns the internal structure. Covers UTXO metadata, BIP32 deriv paths, inputs/outputs, etc. Useful for hardware wallet or multisig integrations.

ServerMaestro MCP Server
CategoryRead

How to control rpc_psbt_decode ↓

WHAT IT DOES

What rpc_psbt_decode does on Maestro MCP Server

AI agents call rpc_psbt_decode 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 rpc_psbt_decode needs a policy

This is purely a parsing/inspection function that extracts and displays information from a cryptographic data structure. It has no side effects on the blockchain or local state. The tool neither executes transactions, modifies data, nor triggers external operations. PSBT decoding is a prerequisite step in transaction construction workflows but the tool itself only reads and returns structured information.

From the tool's definition Tool 'rpc_psbt_decode' takes a signed PSBT hex and 'returns the internal structure' — it reads and decodes data without modifying or executing transactions.

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

POLICY

How to control rpc_psbt_decode

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 rpc_psbt_decode:

policy.json

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

rpc_psbt_decode 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

Related tools and policies

More Maestro MCP Server tools

Destructive EventManagerService_DeleteTrigger Remove a trigger Deletes a specific trigger identified by its unique \ Execute esplora_broadcast_transaction Broadcast a raw transaction to the network. The transaction should be provided as hex in t Execute rpc_submit_transaction Pushes a signed raw transaction to the network. Write EventManagerService_CreateTrigger Create a new trigger Adds a trigger to a manager to listen for specific blockchain activ Write EventManagerService_UpdateTrigger Update a trigger Allows modification of a trigger Read rpc_block_range_info Fetches basic info for a contiguous block range (start and end height). Read brc20_transfer_inscriptions_by_address Returns all unspent BRC20 transfer inscriptions residing at the address. This endpoint is Read activity_by_inscription Lists all transactions that have involved the given inscription, starting from its origin

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

Questions about rpc_psbt_decode

What does the rpc_psbt_decode tool do? +

Takes a signed PSBT hex and returns the internal structure. Covers UTXO metadata, BIP32 deriv paths, inputs/outputs, etc. Useful for hardware wallet or multisig integrations. 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 rpc_psbt_decode? +

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

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

Can I rate-limit rpc_psbt_decode? +

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

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

rpc_psbt_decode 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.