obd2-mcp
MCP server: let AI assistants read your car via ELM327 - DTCs, live data, freeze frame, VIN. Mock vehicle included, no hardware needed.
Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
How we verified
Verified is a snapshot. Live keeps it current, and builds your track record.
⚡ Connect GitHub → continuous verification on every pushwhy connect →Who stands behind it
shoka-jp
Source: github_topic
Claim it to get a verified publisher badge, a free copy of our full audit findings, and direct contact for any high-priority issues we find. Or connect your repo for our deepest verification, Live Monitored: read-only, revoke anytime. What we access →
Install from
The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.
These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.
connection_statusReport the OBD-II adapter connection: transport, adapter identity, and battery voltage at the port.
read_dtcsRead diagnostic trouble codes: stored (confirmed) DTCs, pending DTCs, MIL (check-engine light) state, and DTC count. Use first when a warning light is on.
read_live_dataread_freeze_frameRead the freeze frame (frame 0): the DTC that froze it plus engine conditions captured at the moment the fault set. Read this BEFORE clearing codes — clearing erases it.
read_readinessRead readiness monitors (emissions self-tests): which monitors this vehicle supports and whether each has completed. Needed to know if the vehicle would pass an emissions inspection after codes were cleared.
read_vinRead the Vehicle Identification Number (VIN) from the ECU (mode 09 PID 02).
clear_dtcsClear stored DTCs and turn off the MIL (mode 04). DESTRUCTIVE: also erases freeze frame data and resets readiness monitors, which can make the vehicle fail an emissions inspection until drive cycles complete. Read read_dtcs and read_freeze_frame first, and only call this with confirm=true after the …
Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse
Anthropic's MCP TypeScript SDK has a ReDoS vulnerability
Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default
OBD2MCP_BAUDSerial baud rate defaults to 38400; override with =115200 if your adapter needs it. Bluetooth adapters must first be paired at the OS level so they expose a serial port.OBD2MCP_CONNECTIONUSB / Bluetooth (serial port) =serial:COM3 (Windows) / serial:/dev/ttyUSB0 (Linux) / serial:/dev/tty.usbserial-XXXX (macOS)Tool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
7/7 tools missing one or more hints — connection_status (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); read_dtcs (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); read_live_data (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +4 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
Tool inputs are validated
Only 2/7 tool handlers declare input schemas (29%)
Declare an inputSchema with zod/joi/yup on every tool definition.
Tests exist
No test files found
Add tests that exercise each declared tool.
Shell command execution
1 child_process call — runs shell commands
Prefer library functions over shell-outs. If you must shell out, ensure all inputs are properly escaped.
Production dependencies are patched
0 critical, 3 high severity in production deps — @modelcontextprotocol/sdk@1.12.0 (high), @modelcontextprotocol/sdk@1.12.0 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.
[](https://m8ven.ai/mcp/shoka-jp/obd2-mcp)?variant=verified from the URL.Vetting this one by hand? Tool Check is an MCP that scores other MCPs. Add it once and ask Claude, ChatGPT, or any MCP client to grade a server, surface CVEs, check the publisher, and suggest safer alternatives — before you install.
https://m8ven.ai/api/mcp/tool-check