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DERATE — truck fault codes

Heavy-duty truck SPN/FMI and OBD fault codes: meaning, safe-to-drive verdict, parts and recalls.

Connector by derate.appOfficial · Domain verified by the MCP Registry

IndexedLicense unknownRemote (HTTP)
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Install

Works with Claude Code, VS Code, Cursor, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install connector/derate-app-derate

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

Remote endpoint

  • https://derate.app/mcp Remote (HTTP)

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About

Heavy-duty truck SPN/FMI and OBD fault codes: meaning, safe-to-drive verdict, parts and recalls.

Reviews

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Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools
15 read · 0 write · 0 deleteRead-only
Secrets
None asked for
Install scripts
Nothing to install (hosted)
Runs as
Hosted (remote endpoint)

Tools by what they do 15

From the running server's own tool list (tools/list) on Oct 25, 2026.

Read 15 · Look things up without changing anything.

  • buscar_codigo
  • es_seguro_manejar
  • explain_fault_code
  • get_data_notes
  • get_diagnosis
  • get_download_links
  • get_guide
  • get_pricing
  • get_truck_fault_code
  • interpret_derate
  • list_fault_codes
  • list_supported_engine_families
Show 3 more tools
  • retiros_de_camion
  • search_fault_code_library
  • search_guides

Network hosts it talks to 1

  • derate.app · found in remote endpoint, install command

Tools (15)

As the server listed them on Oct 25, 2026. Descriptions are the server’s own words; hidden characters are shown as [U+…].

  • buscar_codigoSearch truck fault code / Buscar códigoread-only

    Search DERATE's 56-code heavy-truck library by SPN/FMI, P-code or free text. Returns severity, derates yes/no, meaning, part and estimated part-price range, and the page URL. / Busca en la biblioteca de códigos de DERATE.

  • es_seguro_manejarIs it safe to drive? / ¿Es seguro manejar?read-only

    Safe-to-drive verdict (stop / service_soon / info) for a truck fault code, from DERATE's library only. Unknown codes return 'unknown'. / Veredicto de si es seguro seguir manejando.

  • explain_fault_codeExplain fault coderead-only

    Explain a truck fault code or symptom in DERATE terms: plain-language meaning, severity, probable causes, recommended tests with expected values, repair steps and cost estimate.

  • get_data_notesData quality notes / Notas de calidad de datosread-only

    DERATE dataset notes: code count, sources, known gaps, license (CC BY 4.0), how to cite and download URLs. / Notas de calidad, licencia y cómo citar.

  • get_diagnosisGet diagnosisread-only

    Return the full DERATE demo diagnosis for a truck: verdict (STOP/CAUTION/CLEAR), derate countdown, every fault code and the work order summary.

  • get_download_linksGet DERATE download linksread-only

    Return the official App Store and Google Play links for the DERATE native app (iOS and Android). DERATE runs only as a mobile app.

  • get_guideGet a guide or news article / Ver guía o noticiaread-only

    Full text (markdown) of one DERATE guide or news article by slug, with sources and the derate.app URL to cite. / Texto completo de una guía o noticia.

  • get_pricingGet DERATE pricingread-only

    List DERATE's plans and prices in USD. The app is a free download; plans are purchased inside the iOS/Android app (App Store / Google Play). Monthly Driver and Shop plans include a 7-day free trial for new subscribers.

  • get_truck_fault_codeGet truck fault coderead-only

    Look up a diesel truck fault code (J1939 SPN/FMI such as 'SPN 3251 FMI 0', or an OBD-II code such as 'P2002') in DERATE's public fault-code library. Returns what the code means, its severity, whether it is safe to keep driving, probable causes, the recommended tests, and the canonical URL of the public page for that code. Works without any account.

  • interpret_derateInterpret an engine derateread-only

    Explain a diesel truck engine derate or power-loss symptom described in plain language (for example 'DEF light on and truck limited to 55 mph'). Returns the most likely cause, how urgent it is, the immediate action to take, and matching public fault-code pages. This is the free public interpretation; the full guided diagnosis with tests and a work order runs in the DERATE app.

  • list_fault_codesList fault codesread-only

    List the fault codes (SPN/FMI) in the current DERATE diagnosis with severity, system, fault type and whether they are a root cause.

  • list_supported_engine_familiesList supported engine familiesread-only

    List the diesel truck engine families and code protocols DERATE interprets (J1939 SPN/FMI and OBD-II), so an agent knows whether a given truck is covered before looking up a code.

  • retiros_de_camionTruck recalls / Retiros de camiónread-only

    How to check heavy-truck safety recalls (NHTSA-based), with per-make source links for Freightliner, Volvo, Kenworth, Peterbilt, International, Mack and Western Star. / Cómo revisar retiros de seguridad.

  • search_fault_code_librarySearch the fault code libraryread-only

    Full-text search over DERATE's public diesel truck fault-code library by code, system, dashboard light or symptom words. Returns a list of matching entries with code, title, severity, system and the canonical public URL.

  • search_guidesSearch guides and news / Buscar guías y noticiasread-only

    Search DERATE's truck-driver guides and trucking news (derate, DEF, emissions, recalls, enforcement, market). Returns title, quick answer and derate.app URL. / Busca en las guías y noticias de DERATE.

Signals

Last release
Oct 10, 2026 (18 days ago)

Details

Registry name
app.derate/derate
Version
2.0.0
Auth
Auth not stated
License
License unknown
Website
derate.app
First seen
Oct 24, 2026
Last checked
Oct 25, 2026
Source
Official MCP Registry
Cite this page

DERATE — truck fault codes MCP server. Agent Mart. https://agentmart.dev/connectors/derate-app-derate (last updated 2026-10-25)