list_backends_tool

List available IBM Quantum backends.

SERVERQiskit IBM Transpiler MCP Server SOURCEqiskit-ibm-transpiler-mcp-server

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity verified Pull the record →

This record as markdown: /tools/qiskit-ibm-transpiler-mcp-server/list-backends-tool.md

WHAT IT DOES

What list_backends_tool does on Qiskit IBM Transpiler MCP Server

AI agents call list_backends_tool to retrieve information from Qiskit IBM Transpiler MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why list_backends_tool is rated Low

This tool queries and returns information about available quantum computing backends without modifying, executing on, or deleting any data. It is a simple informational lookup that an AI agent could safely call without risk of unintended consequences.

From the tool's definition Tool name contains 'list' and description states it 'List[s] available IBM Quantum backends' — a retrieval operation with no side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_backends_tool safely

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

list_backends_tool Allowed

list_backends_tool is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

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

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Qiskit IBM Transpiler MCP Server, apply this rule, and every list_backends_tool call is checked against it from then on.

FAQ

Questions about list_backends_tool

What does the list_backends_tool tool do? +

List available IBM Quantum backends. It is categorised as a Read tool in the Qiskit IBM Transpiler MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_backends_tool? +

Register the Qiskit IBM Transpiler MCP Server MCP server in PolicyLayer and add a rule for list_backends_tool: 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 Qiskit IBM Transpiler MCP Server. Nothing to install.

What risk level is list_backends_tool? +

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

Can I rate-limit list_backends_tool? +

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

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

list_backends_tool is provided by the Qiskit IBM Transpiler MCP Server MCP server (qiskit-ibm-transpiler-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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