# preprocess_c_source A execute tool on the Allcanuse MCP server. Agent View of the PolicyLayer registry record for `preprocess_c_source`. HTML page: https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/preprocess-c-source ## Facts - Tool: `preprocess_c_source` - Server: Allcanuse (`ra1nyxin/allcanuse-mcp`) — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp.md - Homepage: https://github.com/ra1nyxin/allcanuse-mcp - Risk category: Execute (High risk) - Registry record: grade F, identity unverified - Server rate-limited: no - Parameters: 0 - Recommended policy verdict: Rate-limited ## Example call (MCP tools/call, JSON-RPC 2.0) ```json { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "preprocess_c_source", "arguments": {} } } ``` ## Why preprocess_c_source is rated High Based on the tool name, this likely runs the C preprocessor (e.g., gcc -E) on source code, which is an execution operation. The server context confirms it includes code compilation and execution capabilities. Empty description lowers confidence, but sibling tools like 'compile_c_program' and 'check_c_syntax' suggest this fits an Execute pattern. From the tool's own definition: "Tool name 'preprocess_c_source' on a server that includes tools like 'compile_c_program', 'execute_script', and 'command execution'. The description is empty and uninformative." ## Use case AI agents invoke preprocess_c_source to trigger actions in Allcanuse. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Allcanuse: ```json { "version": "1", "default": "deny", "tools": { "preprocess_c_source": { "limits": [ { "counter": "preprocess_c_source_rate", "window": "minute", "max": 10, "scope": "grant" } ] } } } ``` ## Other tools on Allcanuse (129) - `cancel_background_task` — Destructive — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/cancel-background-task.md - `delete_path` — Destructive — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/delete-path.md - `kill_process` — Destructive — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/kill-process.md - `capture_camera_photo` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/capture-camera-photo.md - `capture_screenshot` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/capture-screenshot.md - `check_c_syntax` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/check-c-syntax.md - `compile_c_program` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/compile-c-program.md - `create_background_task` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/create-background-task.md - `deploy_and_update_service` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/deploy-and-update-service.md - `evaluate_c_math_expression` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/evaluate-c-math-expression.md - `extract_archive` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/extract-archive.md - `format_c_code` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/format-c-code.md - `generate_c_build_files` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/generate-c-build-files.md - `generate_c_numeric_test_harness` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/generate-c-numeric-test-harness.md - `http_request` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/http-request.md - `optimize_images_for_memory` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/optimize-images-for-memory.md - `pause_background_task` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/pause-background-task.md - `ping_host` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/ping-host.md - `raw_tcp_exchange` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/raw-tcp-exchange.md - `resume_background_task` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/resume-background-task.md - `run_cmd` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/run-cmd.md - `run_powershell` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/run-powershell.md - `run_shell` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/run-shell.md - `scan_ports` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/scan-ports.md - `start_managed_process` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/start-managed-process.md - `start_process` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/start-process.md - `stop_managed_process` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/stop-managed-process.md - `tcp_connect` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/tcp-connect.md - `trace_route` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/trace-route.md - `udp_send_receive` — Execute — https://policylayer.com/tools/ra1nyxin-allcanuse-mcp/udp-send-receive.md - …and 99 more: https://policylayer.com/tools/ra1nyxin-allcanuse-mcp.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=ra1nyxin-allcanuse-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/ra1nyxin-allcanuse-mcp