# available_instances_tool A read tool on the Qiskit IBM Transpiler MCP Server MCP server. Agent View of the PolicyLayer registry record for `available_instances_tool`. HTML page: https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/available-instances-tool ## Facts - Tool: `available_instances_tool` - Server: Qiskit IBM Transpiler MCP Server (`qiskit-ibm-transpiler-mcp-server`) — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server.md - Install: `npx -y qiskit-ibm-transpiler-mcp-server` - Homepage: https://github.com/Qiskit/mcp-servers - Risk category: Read (Low risk) - Registry record: grade F, identity verified - Server rate-limited: no - Parameters: 0 - Recommended policy verdict: Allowed ## Example call (MCP tools/call, JSON-RPC 2.0) ```json { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "available_instances_tool", "arguments": {} } } ``` ## Why available_instances_tool is rated Low This tool retrieves information about available Qiskit instances without modifying any state. It is a standard inventory/discovery query operation with no side effects or capability to alter data, execute operations, or commit resources. Low severity due to minimal blast radius if misused by an AI agent. From the tool's own definition: "Tool name 'available_instances_tool' strongly suggests listing or retrieving available instances. Sibling tools like 'active_instance_info_tool' and 'active_account_info_tool' further indicate this is a read-only querying tool." ## Use case AI agents call available_instances_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. ## Recommended policy (PolicyLayer) Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Qiskit IBM Transpiler MCP Server: ```json { "version": "1", "default": "deny", "tools": { "available_instances_tool": {} } } ``` ## Other tools on Qiskit IBM Transpiler MCP Server (70) - `cancel_job_tool` — Destructive — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/cancel-job-tool.md - `delete_environment_tool` — Destructive — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/delete-environment-tool.md - `delete_model_tool` — Destructive — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/delete-model-tool.md - `delete_saved_account_tool` — Destructive — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/delete-saved-account-tool.md - `ai_clifford_synthesis_tool` — Execute — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/ai-clifford-synthesis-tool.md - `ai_linear_function_synthesis_tool` — Execute — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/ai-linear-function-synthesis-tool.md - `ai_pauli_network_synthesis_tool` — Execute — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/ai-pauli-network-synthesis-tool.md - `ai_permutation_synthesis_tool` — Execute — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/ai-permutation-synthesis-tool.md - `ai_routing_tool` — Execute — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/ai-routing-tool.md - `convert_qpy_to_qasm3_tool` — Execute — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/convert-qpy-to-qasm3-tool.md - `generate_random_clifford_tool` — Execute — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/generate-random-clifford-tool.md - `generate_random_linear_function_tool` — Execute — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/generate-random-linear-function-tool.md - `hybrid_ai_transpile_tool` — Execute — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/hybrid-ai-transpile-tool.md - `run_estimator_tool` — Execute — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/run-estimator-tool.md - `run_sampler_tool` — Execute — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/run-sampler-tool.md - `start_tensorboard_tool` — Execute — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/start-tensorboard-tool.md - `start_training_tool` — Execute — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/start-training-tool.md - `stop_tensorboard_tool` — Execute — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/stop-tensorboard-tool.md - `stop_training_tool` — Execute — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/stop-training-tool.md - `synthesize_clifford_tool` — Execute — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/synthesize-clifford-tool.md - `synthesize_linear_function_tool` — Execute — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/synthesize-linear-function-tool.md - `synthesize_permutation_tool` — Execute — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/synthesize-permutation-tool.md - `transpile_circuit_tool` — Execute — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/transpile-circuit-tool.md - `wait_for_training_tool` — Execute — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/wait-for-training-tool.md - `analyze_circuit_tool` — Other — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/analyze-circuit-tool.md - `batch_train_environments_tool` — Other — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/batch-train-environments-tool.md - `compare_optimization_levels_tool` — Other — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/compare-optimization-levels-tool.md - `create_clifford_env_tool` — Other — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/create-clifford-env-tool.md - `create_linear_function_env_tool` — Other — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/create-linear-function-env-tool.md - `create_permutation_env_tool` — Other — https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server/create-permutation-env-tool.md - …and 40 more: https://policylayer.com/tools/qiskit-ibm-transpiler-mcp-server.md ## For agents This record is a snapshot. Live verdicts and the full registry: - Check every server in your MCP config at once: `npx -y policylayer stack` - Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md) - Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events` --- Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=qiskit-ibm-transpiler-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/qiskit-ibm-transpiler-mcp-server