INDIVIDUAL MCP TOOL

lookup_trouble_code

What a diagnostic trouble code (P0420, U0100, …) means where the OBD-II standard defines it, and — the part no other source publishes — which vehicles' federal record actually names it: how many manufacturer service bulletins and owner complaints mention it, and on which model years.

whichtrim.comnone authenticationAvailability not checked

LIVE ENDPOINT

https://whichtrim.com/portal/mcp

No auth detected

Connect to this endpoint to inspect the live schema for lookup_trouble_code and invoke it with your own arguments.

Indexed input schema

{}

Risk classification

Inferred read-only · medium confidence · heuristic, not a guarantee.

No write-capable action terms were found; this is not proof that invocation has no side effects.

Parent server

whichtrim.com

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.whichtrim]
url = "https://whichtrim.com/portal/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "whichtrim": {
      "type": "http",
      "url": "https://whichtrim.com/portal/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: whichtrim
Remote MCP URL: https://whichtrim.com/portal/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "whichtrim": {
      "url": "https://whichtrim.com/portal/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "whichtrim": {
      "type": "http",
      "url": "https://whichtrim.com/portal/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "whichtrim",
  "transport": "streamable-http",
  "url": "https://whichtrim.com/portal/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

Related tools

search_vehicles — Find model years in the WhichTrim catalogue by make, model and/or year.
get_vehicle — The full published record for one model year: EPA fuel economy, NHTSA recalls, owner-complaint counts and the mileage at which owners reported problems, crash ratings, open investigations, service bulletins and the diagnostic trouble codes its record names.
check_recalls — Every NHTSA recall campaign on file for one model year, with severity, park-outside and do-not-drive advisories and the reported completion rate.
decode_vin — Decode a 17-character VIN against NHTSA's vPIC database and join it to the WhichTrim record for that model year: year, make, model, engine, plant, plus the grade and recall campaigns on file.
compare_vehicles — Two model years side by side on the figures that decide most purchases: fuel economy or EV range, Safety Signal grade, recalls, complaints, crash rating and starting price where a press kit is on file.