MCPFax Vehicle Diagnostics MCP server

• dtc_lookupFree

  Look up what a vehicle fault code (OBD-II diagnostic trouble code) means. Returns a reworded definition compiled from open/public sources (with the source and licence per row) plus which makes define the code specifically. Pass 'make' for the make-specific meaning instead of the generic SAE one — the same code can mean different things on different brands. Use this when a scan tool reported a code like P0301, B1318 or U0100; we never guess a meaning (unknown codes return not_found). Descriptions are compilations, not manufacturer verbatim strings, and severity is not guaranteed. Costs $0.006 USDC per call via x402 on Base.

• vehicle_recallsFree

  Official NHTSA safety recalls for a vehicle. Returns campaign id, affected component, the safety consequence, and the free remedy, newest first (max 50). Query by make (optionally model and year) or by a known campaign id. Use this before buying a used vehicle or when a customer asks whether their car has open recalls. A zero count means nothing matched the ingested NHTSA subset — it does not prove the vehicle is recall-free. Costs $0.005 USDC per call via x402 on Base.

• vehicle_tsbsFree

  NHTSA Technical Service Bulletins (manufacturer repair guidance for known defects that are not safety recalls). Returns bulletin id, summary, and the fault codes each bulletin names (max 50). Query by make/model/year, or by fault code to find bulletins that address that specific code. Use this after dtc_lookup when you want the manufacturer's documented fix. A zero count means nothing matched the ingested subset. Costs $0.005 USDC per call via x402 on Base.

• vin_decodeFree

  Decode a Vehicle Identification Number into make, model, model year, body class, engine and plant country using NHTSA's public vPIC database. Use this when you have a VIN and need the exact vehicle before looking up recalls or bulletins. Costs $0.005 USDC per call via x402 on Base.

• –Code scanremote-only server, no package to scann/a
• Live reliabilityremote reachable in 255ms20/20
• Tool poisoning4 tool descriptions checked15/15
• Auth qualityopen endpoint, read-only tools10/15
• Maintenanceno repository listed3/15
• Maintainer identityverified namespace with website, no repo4/10

MCPFax Vehicle Diagnostics: common questions

Is MCPFax Vehicle Diagnostics MCP server safe?

With care: it is graded C, so read the findings first (69/100). Read the MCPFax Vehicle Diagnostics safety report

How do I install MCPFax Vehicle Diagnostics?

It runs remotely at mcpfax-diag.bowling-anthony.workers.dev. Add it to Claude Code, Claude Desktop or Cursor with the snippets above, or call it through the mcp.market gateway without installing anything.

Does MCPFax Vehicle Diagnostics need an API key?

Not as far as the registry entry and our scan can tell: no credentials are declared or required.

Is MCPFax Vehicle Diagnostics maintained?

The latest release is v1.1.2.

Is MCPFax Vehicle Diagnostics up?

100% of our last 6 checks got an answer. We check remote servers about four times a day.