DERATE — truck fault codes

Name: DERATE — truck fault codes
Author: app.derate

MCP serverMCP

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

by app.deratehomepage ↗v2.1.0

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30-day availability69/69 checks ok

when	check	result	http	latency	detail
2 h ago	mcp initialize	ok	200	635 ms	server derate 2.1.0 · protocol 2025-06-18 · 15 tools
9 h ago	mcp initialize	ok	200	934 ms	server derate 2.1.0 · protocol 2025-06-18 · 15 tools
17 h ago	mcp initialize	ok	200	733 ms	server derate 2.1.0 · protocol 2025-06-18 · 15 tools
25 h ago	mcp initialize	ok	200	1365 ms	server derate 2.1.0 · protocol 2025-06-18 · 15 tools
33 h ago	mcp initialize	ok	200	567 ms	server derate 2.1.0 · protocol 2025-06-18 · 15 tools
2 d ago	mcp initialize	ok	200	837 ms	server derate 2.1.0 · protocol 2025-06-18 · 15 tools
2 d ago	mcp initialize	ok	200	836 ms	server derate 2.1.0 · protocol 2025-06-18 · 15 tools
2 d ago	mcp initialize	ok	200	853 ms	server derate 2.1.0 · protocol 2025-06-18 · 15 tools
3 d ago	mcp initialize	ok	200	516 ms	server derate 2.1.0 · protocol 2025-06-18 · 15 tools
3 d ago	mcp initialize	ok	200	1127 ms	server derate 2.1.0 · protocol 2025-06-18 · 15 tools

Tools observed via MCP handshake

buscar_codigo — 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
es_seguro_manejar — 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 segu
retiros_de_camion — How to check heavy-truck safety recalls (NHTSA-based), with per-make source links for Freightliner, Volvo, Kenworth, Peterbilt, International, Mack and Western
get_data_notes — 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.
search_guides — Search DERATE's truck-driver guides and trucking news (derate, DEF, emissions, recalls, enforcement, market). Returns title, quick answer and derate.app URL. /
get_guide — 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_truck_fault_code — 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 wha
interpret_derate — 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 mos
search_fault_code_library — 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
list_supported_engine_families — 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
get_pricing — 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
get_download_links — 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_diagnosis — Return the full DERATE demo diagnosis for a truck: verdict (STOP/CAUTION/CLEAR), derate countdown, every fault code and the work order summary.
list_fault_codes — List the fault codes (SPN/FMI) in the current DERATE diagnosis with severity, system, fault type and whether they are a root cause.
explain_fault_code — Explain a truck fault code or symptom in DERATE terms: plain-language meaning, severity, probable causes, recommended tests with expected values, repair steps a

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Official MCP Registryapp.derate/derate

first seen 20 d ago · fetched 3 d agoopen ↗

Field history (6 recent events)

20 d ago · declared · summary → "Heavy-duty truck SPN/FMI and OBD fault codes: meaning, safe-to-drive verdict, parts and recalls."
20 d ago · declared · description → "Heavy-duty truck SPN/FMI and OBD fault codes: meaning, safe-to-drive verdict, parts and recalls."
20 d ago · declared · publisherName → "app.derate"
20 d ago · declared · homepageUrl → "https://derate.app"
20 d ago · declared · version → "2.0.0"
20 d ago · declared · protocols → ["mcp"]

DERATE — truck fault codes

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