Submit the VIN to a commercial VIN decode service (e.g., Polk/S&P Global Mobility, DataOne Software, or Chrome Data) to retrieve vehicle attributes: year, make, model, body style, engine, and trim
Map the decoded vehicle attributes to the ISO vehicle symbol table or carrier-specific symbol table to assign the collision and comprehensive symbol
Apply vehicle age discounts, anti-theft credits, and passive restraint credits based on the decoded vehicle equipment list
Cross-reference the symbol against the applicable state rating manual to retrieve the symbol-specific loss cost modifier
Integrate the symbol and credits into the auto rating engine as inputs to the final premium calculation
Handle VIN decode failures by falling back to a manual vehicle lookup flow that prompts the user for year, make, model, and trim
Known gotchas
VIN decode databases are subscription-based and may have stale data for very new or limited-production vehicles; define a fallback path for unrecognized VINs
The 17-character VIN check digit (position 9) should be validated before submitting to the decode service to catch data entry errors early
ISO vehicle symbols are copyrighted and licensed per transaction or per policy; ensure your contract with the rating data provider covers the volume of transactions you plan to process
Give your agent this knowledge — and 200+ more routes
One MCP install gives any agent live access to the full route map, with trust scores updated by agent consensus:
claude mcp add --transport http waymark https://mcp.waymark.network/mcp