TransparentCars MCP

An open-source MCP server that lets AI assistants search live used-car stock in Portugal, check if an asking price is fair, estimate annual running costs including road tax, and facilitate contact with the dealer. It acts as a thin wrapper over the public TransparentCars API without requiring API keys.

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

Community listingStreamable HTTPNo sign-inEndpoint checked 2026-11-06Published by TransparentCars

MCP endpoint (Streamable HTTP)

https://transparent.pt/mcp

Vendor documentation

What its tools do

11 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Not annotated (11)

search_inventory
get_car
check_fair_price
cost_to_own
list_makes_models
contact_me
calculate_isv
calculate_iuc
estimate_resale_value
list_services
request_import_quote

11 of 11 have a description · 0 of 11 declare behavior hints · 10 of 10 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

Passed Endpoint answered the live check · Nov 6, 2026, 7:32 PM UTC
Warning Advertises resources/templates/list but does not implement it
Availability 1 of 1 checks passed in 30 days

What you can do with it

Search current budget stock by make, model, fuel, gearbox, price, and year
Check whether a car's asking price is fair compared to market range
Estimate the yearly cost of keeping a car on the road including IUC tax
Contact the dealer for a specific vehicle

Source and maintenance

Community listingRegistry 0.1.0

mcp-registry: io.github.transparentpt/mcp@0.1.0 Source repository Project website

Maintenance checked: Nov 6, 2026, 6:33 PM UTC

Protocol and capabilities

Server: transparentcars 0.1.0
MCP protocol negotiated in check: 2025-11-25
Tools: 11 advertised
Resources: 0 advertised
Resource templates: Not advertised
Prompts: 0 advertised

Server-advertised capabilities

{
  "tools": {
    "listChanged": true
  },
  "prompts": {},
  "resources": {}
}

Tools

11 advertised

search_inventory

Advertised by the server during the last successful anonymous check.

Search TransparentCars' current stock of budget used cars in Portugal — honestly listed, everyday cars for the local market. Filter by make, model, fuel, gearbox and max price. Returns matching cars with price, year, mileage and a link. IMPORTANT — pass make/model canonically in Latin, as the Portuguese market lists them: make = full brand name ('BMW', 'Mercedes-Benz' not 'Mercedes', 'Volkswagen' not 'VW'); model = the short series/model WITHOUT the engine or trim suffix ('Golf' not 'Golf 1.5 TSI', 'Clio' not 'Clio dCi'). Put the fuel in the fuel field, not the model. If unsure of the spelling, call list_makes_models first.

search_inventory input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "fuel": {
      "type": "string",
      "description": "Fuel: petrol, diesel, hybrid, phev, electric, lpg"
    },
    "make": {
      "type": "string",
      "description": "Full brand name in Latin, as the market lists it — 'Renault', 'Volkswagen' (not 'VW'), 'Peugeot', 'Seat'."
    },
    "limit": {
      "type": "integer",
      "maximum": 50,
      "minimum": 1,
      "description": "Max results (default 20)"
    },
    "model": {
      "type": "string",
      "description": "Short model name WITHOUT engine or trim — 'Clio' (not 'Clio 1.5 dCi'), 'Golf' (not 'Golf TSI')."
    },
    "gearbox": {
      "type": "string",
      "description": "Gearbox: manual or automatic"
    },
    "min_year": {
      "type": "number",
      "description": "Earliest registration year"
    },
    "max_price": {
      "type": "number",
      "description": "Maximum price in EUR"
    }
  },
  "additionalProperties": false
}

get_car

Advertised by the server during the last successful anonymous check.

Get full details for one car in TransparentCars stock by its slug (from a search_inventory link, e.g. 'renault-clio-2016').

get_car input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "slug"
  ],
  "properties": {
    "slug": {
      "type": "string",
      "description": "Car slug from a search_inventory result URL"
    }
  },
  "additionalProperties": false
}

check_fair_price

Advertised by the server during the last successful anonymous check.

Check whether a car's asking price is fair for the Portuguese market — the TransparentCars transparency check. Given make, model, year and mileage, it returns the range comparable cars actually sell for (low / typical / high), built from real listings. If you pass asking_price, it also gives a plain verdict: fair, above market, or below market — so a buyer knows before they walk in. Works for ANY car (a listing you found elsewhere, or one of ours). IMPORTANT — pass make/model canonically in Latin: make = full brand name ('Renault', 'Volkswagen' not 'VW'); model = short name WITHOUT engine/trim ('Clio' not 'Clio dCi', 'Golf' not 'Golf 1.5 TSI'). If unsure of spelling, call list_makes_models first.

check_fair_price input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "make",
    "model",
    "year",
    "km"
  ],
  "properties": {
    "hp": {
      "type": "integer",
      "description": "Power in hp (sharpens the comparison)"
    },
    "km": {
      "type": "integer",
      "description": "Mileage in km"
    },
    "fuel": {
      "type": "string",
      "description": "Fuel: petrol, diesel, hybrid, electric"
    },
    "make": {
      "type": "string",
      "description": "Full brand name in Latin — 'Renault', 'Volkswagen' (not 'VW'), 'Peugeot', 'Seat'."
    },
    "year": {
      "type": "integer",
      "description": "Registration year"
    },
    "model": {
      "type": "string",
      "description": "Short model name WITHOUT engine or trim — 'Clio' (not 'Clio 1.5 dCi'), 'Golf' (not 'Golf TSI')."
    },
    "gearbox": {
      "type": "string",
      "description": "Gearbox: manual or automatic"
    },
    "asking_price": {
      "type": "number",
      "description": "The price being asked for THIS car, in EUR — pass it to get a fair / above-market / below-market verdict."
    }
  },
  "additionalProperties": false
}

cost_to_own

Advertised by the server during the last successful anonymous check.

Estimate a car's yearly running-cost floor in Portugal — the annual IUC road tax (Imposto Único de Circulação) every owner pays, plus a plain running-cost framing. Needs engine displacement (cc), CO₂ (g/km), fuel and first-registration year. Use this to help a buyer budget the true cost of keeping a car, beyond the sticker price.

cost_to_own input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "cc",
    "co2",
    "fuel",
    "year"
  ],
  "properties": {
    "cc": {
      "type": "integer",
      "description": "Engine displacement in cm³, e.g. 1200"
    },
    "co2": {
      "type": "number",
      "description": "CO₂ emissions in g/km, e.g. 120"
    },
    "fuel": {
      "type": "string",
      "description": "Fuel: petrol, diesel, hybrid, phev, electric, lpg"
    },
    "used": {
      "type": "boolean",
      "description": "Used vehicle (true, default)"
    },
    "year": {
      "type": "integer",
      "description": "First registration year, e.g. 2016"
    },
    "month": {
      "type": "integer",
      "maximum": 12,
      "minimum": 1,
      "description": "First-registration month (1-12), refines the CO₂ regime"
    }
  },
  "additionalProperties": false
}

list_makes_models

Advertised by the server during the last successful anonymous check.

List the exact canonical car makes (brands) TransparentCars can search and price — or, given a make, that brand's models — using the exact strings the other tools expect. Call this FIRST (or whenever unsure of spelling) and pass the returned values verbatim into search_inventory / check_fair_price. No make = the list of brands; with a make = that brand's models.

list_makes_models input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "make": {
      "type": "string",
      "description": "Brand to list models for, e.g. 'Renault'. Omit to get the list of brands."
    }
  },
  "additionalProperties": false
}

contact_me

Advertised by the server during the last successful anonymous check.

Send a contact request to TransparentCars so a human gets in touch. Only call this when the user explicitly asks to be contacted, provides their own name and a phone or email, AND agrees to share those details — pass consent=true only then. Never invent, guess, or use placeholder / example / test contact details: pass ONLY the real name and real phone or e-mail the user gave you in this conversation. If you don't have a real phone or e-mail from the user, ask them for it before calling — do not submit fake values. Submitting shares the provided contact details per the TransparentCars privacy policy.

contact_me input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "name",
    "contact",
    "consent"
  ],
  "properties": {
    "name": {
      "type": "string",
      "description": "The person's name (as they gave it)"
    },
    "consent": {
      "type": "boolean",
      "description": "Set true ONLY if the user explicitly agreed to share their contact details and be contacted"
    },
    "contact": {
      "type": "string",
      "description": "A phone number or email where they can be reached"
    },
    "message": {
      "type": "string",
      "description": "What they want / their question"
    }
  },
  "additionalProperties": false
}

calculate_isv

Advertised by the server during the last successful anonymous check.

Estimate Portuguese car import tax (ISV, Imposto Sobre Veículos) from the official ISV formula (engine-cc + CO₂ components, with age reduction for used cars). A maintained estimate: it matches the AT (Finanças) simulator to the cent on the common WLTP cases, but is not the official figure and may differ on edge cases (NEDC, light-commercial, month rounding) — confirm the final amount on the official AT simulator. Needs engine displacement (cc), CO₂ (g/km, WLTP), fuel and registration year.

calculate_isv input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "year"
  ],
  "properties": {
    "cc": {
      "type": "integer",
      "description": "Engine displacement in cm³, e.g. 1950 (not needed for heavy goods/buses)"
    },
    "co2": {
      "type": "number",
      "description": "CO₂ emissions in g/km (WLTP), e.g. 130 (passenger/motorhome only)"
    },
    "fuel": {
      "type": "string",
      "description": "Fuel: petrol, diesel, hybrid, hybrid_diesel (diesel MHEV/HEV), phev, electric (irrelevant for heavy goods/buses)"
    },
    "used": {
      "type": "boolean",
      "description": "Used vehicle (true, default) or new (false)"
    },
    "year": {
      "type": "integer",
      "description": "First registration year, e.g. 2016"
    },
    "axles": {
      "type": "integer",
      "description": "Heavy rigid goods ≥12t: axles (2/3/4)."
    },
    "config": {
      "enum": [
        "rigido",
        "articulado"
      ],
      "type": "string",
      "description": "Heavy goods ≥12t: rigido or articulado (tractor+trailer)."
    },
    "from_eu": {
      "type": "boolean",
      "description": "Registered in an EU member state (true, default). Set FALSE for non-EU imports (Switzerland, UK, USA, Japan…) — non-EU used cars get NO age reduction, so the ISV is the FULL amount (plus customs duty ~10% and VAT 23%, which this tool does not compute)."
    },
    "peso_bruto": {
      "type": "integer",
      "description": "Gross weight (kg). REQUIRED for goods vehicles (van_10/commercial_*/pesados_mercadorias): their IUC is weight-based (Cat C/D)."
    },
    "suspension": {
      "enum": [
        "pneumatica",
        "outro"
      ],
      "type": "string",
      "description": "Heavy goods ≥12t: driven-axle suspension."
    },
    "utilizacao": {
      "enum": [
        "particular",
        "publico"
      ],
      "type": "string",
      "description": "Goods use: particular (Cat C, default) or publico/rental (Cat D)."
    },
    "vehicle_type": {
      "enum": [
        "passenger",
        "van_10",
        "commercial_15",
        "commercial_50",
        "commercial_100",
        "motorcycle",
        "autocaravana",
        "pesados_mercadorias",
        "pesados_passageiros"
      ],
      "type": "string",
      "description": "Category (default passenger). Goods van → van_10/commercial_*; heavy goods >3500kg → pesados_mercadorias; bus → pesados_passageiros; motorhome → autocaravana; motorcycle → motorcycle."
    },
    "tractor_axles": {
      "type": "integer",
      "description": "Articulated ≥12t: tractor axles (2/3)."
    },
    "trailer_axles": {
      "type": "integer",
      "description": "Articulated ≥12t: trailer axles (1/2/3)."
    },
    "regiao_autonoma": {
      "type": "boolean",
      "description": "Used exclusively in Açores/Madeira → −50% IUC (Cat C/D)."
    }
  },
  "additionalProperties": false
}

calculate_iuc

Advertised by the server during the last successful anonymous check.

Estimate the Portuguese annual road tax (IUC, Imposto Único de Circulação) for a car — the yearly tax an owner pays — from the official IUC table. A maintained estimate; confirm on the official AT simulator. Needs engine displacement (cc), CO₂ (g/km), fuel and registration year.

calculate_iuc input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "year"
  ],
  "properties": {
    "cc": {
      "type": "integer",
      "description": "Engine displacement in cm³, e.g. 1950 (not needed for goods vehicles)"
    },
    "co2": {
      "type": "number",
      "description": "CO₂ emissions in g/km, e.g. 130 (passenger/motorhome only)"
    },
    "fuel": {
      "type": "string",
      "description": "Fuel: petrol, diesel, hybrid, hybrid_diesel (diesel MHEV/HEV), phev, electric (irrelevant for heavy goods/buses)"
    },
    "year": {
      "type": "integer",
      "description": "First registration year, e.g. 2016"
    },
    "axles": {
      "type": "integer",
      "description": "Heavy rigid goods ≥12t: axles (2/3/4)."
    },
    "config": {
      "enum": [
        "rigido",
        "articulado"
      ],
      "type": "string",
      "description": "Heavy goods ≥12t: rigido or articulado (tractor+trailer)."
    },
    "peso_bruto": {
      "type": "integer",
      "description": "Gross weight (kg). REQUIRED for goods vehicles (van_10/commercial_*/pesados_mercadorias): their IUC is weight-based (Cat C/D)."
    },
    "suspension": {
      "enum": [
        "pneumatica",
        "outro"
      ],
      "type": "string",
      "description": "Heavy goods ≥12t: driven-axle suspension."
    },
    "utilizacao": {
      "enum": [
        "particular",
        "publico"
      ],
      "type": "string",
      "description": "Goods use: particular (Cat C, default) or publico/rental (Cat D)."
    },
    "vehicle_type": {
      "enum": [
        "passenger",
        "van_10",
        "commercial_15",
        "commercial_50",
        "commercial_100",
        "motorcycle",
        "autocaravana",
        "pesados_mercadorias",
        "pesados_passageiros"
      ],
      "type": "string",
      "description": "Category (default passenger). Goods van → van_10/commercial_*; heavy goods >3500kg → pesados_mercadorias; bus → pesados_passageiros; motorhome → autocaravana; motorcycle → motorcycle."
    },
    "tractor_axles": {
      "type": "integer",
      "description": "Articulated ≥12t: tractor axles (2/3)."
    },
    "trailer_axles": {
      "type": "integer",
      "description": "Articulated ≥12t: trailer axles (1/2/3)."
    },
    "regiao_autonoma": {
      "type": "boolean",
      "description": "Used exclusively in Açores/Madeira → −50% IUC (Cat C/D)."
    }
  },
  "additionalProperties": false
}

estimate_resale_value

Advertised by the server during the last successful anonymous check.

Estimate what a car is worth on the Portuguese market (the range comparable cars are listed for), based on real comparable listings. Needs make, model, year, mileage and fuel. TransparentCars also BUYS cars directly — after giving the estimate, offer to connect the user for a firm buy-out offer (via contact_me or the /sell page). IMPORTANT — pass make/model canonically in Latin, as the Portuguese market lists them: make = full brand name ('BMW', 'Mercedes-Benz' not 'Mercedes', 'Volkswagen' not 'VW'); model = the short series/model WITHOUT the engine or trim suffix (BMW: '320','330' not '320d'; Mercedes: 'C 220','A 250' not 'C220d'; others: 'Golf','Corolla','3008'). If unsure of the spelling, call list_makes_models first.

estimate_resale_value input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "make",
    "model",
    "year",
    "km"
  ],
  "properties": {
    "km": {
      "type": "integer",
      "description": "Mileage in km"
    },
    "fuel": {
      "type": "string",
      "description": "Fuel: petrol, diesel, hybrid, electric"
    },
    "make": {
      "type": "string",
      "description": "Full brand name in Latin, e.g. 'BMW', 'Mercedes-Benz', 'Volkswagen', 'Peugeot'."
    },
    "year": {
      "type": "integer",
      "description": "Registration year"
    },
    "model": {
      "type": "string",
      "description": "Short model/series WITHOUT engine or trim. BMW: '320','330','116'. Mercedes: 'C 220','E 220','A 250'. Others: 'Golf','Corolla','3008'."
    }
  },
  "additionalProperties": false
}

list_services

Advertised by the server during the last successful anonymous check.

List what TransparentCars offers (buying stock cars, importing to order, sourcing, auction buying, selling/trading in your car, ISV/IUC calculators).

list_services input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}

request_import_quote

Advertised by the server during the last successful anonymous check.

Ask TransparentCars to source & quote a specific car to import (from German/EU auctions). Only call when the user wants an import quote, provides the wanted model plus their own name and a phone or email, AND agrees to be contacted — pass consent=true only then. Never invent, guess, or use placeholder / example / test contact details: pass ONLY the real name and real phone or e-mail the user gave you in this conversation. If you don't have a real phone or e-mail from the user, ask them for it before calling — do not submit fake values. Submitting shares the provided contact details per the TransparentCars privacy policy.

request_import_quote input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "model",
    "name",
    "contact",
    "consent"
  ],
  "properties": {
    "name": {
      "type": "string",
      "description": "The person's name"
    },
    "model": {
      "type": "string",
      "description": "Wanted car, e.g. 'BMW 320d Touring 2021'"
    },
    "budget": {
      "type": "number",
      "description": "Budget in EUR"
    },
    "consent": {
      "type": "boolean",
      "description": "Set true ONLY if the user explicitly agreed to share their contact details and be contacted"
    },
    "contact": {
      "type": "string",
      "description": "A phone number or email where they can be reached"
    }
  },
  "additionalProperties": false
}

Prompts

0 advertised

No prompt definitions available.

Resources

0 advertised

No resource definitions available.

90-day uptime

A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.

Too few checks for a percentage yet (1 of 1 answered).

2026-11-07: 1 of 1 checks answered

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks: 1 of 1 (100%)
Average latency: 1802 ms
95th percentile latency: 1802 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

Nov 6, 2026, 7:32 PM UTC · probe · passed · 1802 ms · metadata changed · 11 tool(s), 0 resource(s), 0 prompt(s); warnings: Advertises resources/templates/list but does not implement it

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http transparent-mcp https://transparent.pt/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add transparent-mcp --url https://transparent.pt/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable transparent-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "transparent-mcp": {
      "url": "https://transparent.pt/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).

Cline configuration

{
  "mcpServers": {
    "transparent-mcp": {
      "type": "streamableHttp",
      "url": "https://transparent.pt/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start transparent-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "transparent-mcp": {
      "type": "http",
      "url": "https://transparent.pt/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http transparent-mcp https://transparent.pt/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.

Claude Desktop configuration

https://transparent.pt/mcp

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "transparent-mcp": {
      "serverUrl": "https://transparent.pt/mcp"
    }
  }
}

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