OctoTrip Rental Cars MCP Server

Free, no-login MCP server for discovering and comparing rental cars with real-time pricing from multiple providers worldwide.

MCP Streamable HTTP Endpoint:

https://mcp.octotrip.app/rental-cars/mcp

Related

• OctoTrip Flights — flight search MCP server

Affiliate Disclosure

OctoTrip is free to use. Booking links contain affiliate attribution -- OctoTrip may earn a commission at no extra cost to you. Search results are ranked by price within each car category, not by affiliate payout.

Quick Start

Add to your MCP client configuration:

{
  "mcpServers": {
    "octotrip-rental-cars": {
      "url": "https://mcp.octotrip.app/rental-cars/mcp"
    }
  }
}

No API key or login required.

Use with...

Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "octotrip-rental-cars": {
      "url": "https://mcp.octotrip.app/rental-cars/mcp"
    }
  }
}

Cursor / Windsurf

Add to your MCP settings:

{
  "mcpServers": {
    "octotrip-rental-cars": {
      "url": "https://mcp.octotrip.app/rental-cars/mcp"
    }
  }
}

Cline

Add to your Cline MCP settings:

{
  "mcpServers": {
    "octotrip-rental-cars": {
      "url": "https://mcp.octotrip.app/rental-cars/mcp"
    }
  }
}

LobeHub

OpenClaw

openclaw plugins install clawhub:@xltnapps/octotrip-rental-cars

Smithery

Install via Smithery:

npx -y @smithery/cli install xltnapps/octotrip-rental-cars --client claude

Hermes Agent

hermes mcp add octotrip-rental-cars --url https://mcp.octotrip.app/rental-cars/mcp
hermes mcp test octotrip-rental-cars

Or add to ~/.hermes/config.yaml:

mcp_servers:
  octotrip_rental_cars:
    url: "https://mcp.octotrip.app/rental-cars/mcp"

Stdio-only clients

For MCP clients that only support stdio transport:

npx mcp-remote https://mcp.octotrip.app/rental-cars/mcp

curl / Protocol Example

A complete MCP session using curl (initialize, list tools, call search):

# 1. Initialize
curl -s -X POST https://mcp.octotrip.app/rental-cars/mcp \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -d '{
    "jsonrpc": "2.0", "id": 1, "method": "initialize",
    "params": {
      "protocolVersion": "2025-03-26",
      "capabilities": {},
      "clientInfo": {"name": "example", "version": "1.0"}
    }
  }'

# 2. List tools
curl -s -X POST https://mcp.octotrip.app/rental-cars/mcp \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -d '{"jsonrpc": "2.0", "id": 2, "method": "tools/list"}'

# 3. Search
curl -s -X POST https://mcp.octotrip.app/rental-cars/mcp \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -d '{
    "jsonrpc": "2.0", "id": 3, "method": "tools/call",
    "params": {
      "name": "search",
      "arguments": {
        "location": "Munich Airport",
        "pickup_date": "2026-08-01",
        "dropoff_date": "2026-08-07"
      }
    }
  }'

Transport: stateless streamable HTTP. Responses use text/event-stream (SSE). No session persistence or resumability. Rate limit: 1 request/second with burst capacity of 5.

Tool: search

Searches live rental-car offers for a pickup location and rental period. Returns available cars from multiple vendors grouped by category (economy, compact, SUV, etc.), showing the cheapest options in each. The tool queries external provider APIs in real time and may include affiliate booking links. It does not book cars, modify reservations, charge users, or store user data.

Parameters

Response Format

Results are grouped by SIPP car category with the cheapest 2 options per group:

{
  "results": [
    {
      "name": "Volkswagen Golf",
      "vendor": "Europcar",
      "sipp": "CDMR",
      "category": "Compact",
      "price": 181.03,
      "price_per_day": 45.26,
      "pay_now": 181.03,
      "pay_later": 0,
      "currency": "EUR",
      "transmission": "manual",
      "passengers": 5,
      "bags": 1,
      "doors": 4,
      "air_con": true,
      "fuel_policy": "Full to Full",
      "mileage": "Unlimited",
      "free_cancellation": true,
      "free_amendment": true,
      "deposit": 800,
      "excess": 950,
      "included_protections": ["Collision Damage Waiver", "Theft Protection"],
      "image_url": "https://...",
      "booking_url": "https://...",
      "link_type": "affiliate",
      "affiliate_disclosure": "This link contains affiliate attribution. OctoTrip may earn a commission at no extra cost to you."
    }
  ],
  "total": 23,
  "total_available": 379,
  "rental_days": 4,
  "pickup_location_resolved": "Munich International Airport",
  "dropoff_location_resolved": "Munich International Airport",
  "query": { ... }
}

Error Responses

The server returns structured errors with suggestions:

• location_not_found -- location could not be resolved. Try a more specific name or airport.
• invalid_date -- date format not recognized. Use YYYY-MM-DD, DD.MM.YYYY, or similar.
• no_results -- no cars available for the given criteria. Try different dates or a nearby location.

Example Prompts

• Find me a cheap rental car at Amsterdam Schiphol for next weekend
• Compare automatic SUVs available in Munich Airport for July 10-15
• I need a car in Barcelona from August 1-14, budget around 30 EUR/day
• One-way rental from Berlin to Hamburg, picking up Friday, returning Monday
• What's the cheapest economy car at London Heathrow for a week in September?

Privacy

This server does not log IP addresses, search queries, or any user-identifiable data. See PRIVACY.md for full details including sample log entries.

Security

To report a vulnerability, see SECURITY.md.

License

MIT