# IsItAGoodCar

> IsItAGoodCar is a UK vehicle intelligence platform providing vehicle specification lookups, MOT test history checks, road tax status, common problem diagnosis, and fuel price tracking for any UK vehicle registration plate.

IsItAGoodCar aggregates verified UK automotive data from the DVLA (vehicle specifications and road tax status), DVSA (MOT test history and advisory notices), and Experian (condition, salvage/write-off, finance, and stolen vehicle checks with a £20,000 data guarantee).

Key platform capabilities and agent usage instructions:
- Content Negotiation: Send an `Accept: text/markdown` header on page requests to receive clean, LLM-optimized Markdown instead of HTML.
- Vehicle Check Routing: Query vehicle reports using the canonical URL pattern `https://isitagoodcar.com/vehicle-check/[REGISTRATION]` (e.g. `/vehicle-check/AB12CDE`).
- Authentication: Anonymous access is supported for public lookups and data pages. For high-throughput automated access, refer to the API authentication guide.

## Vehicle Intelligence & Lookups

- [Vehicle Check Hub](https://isitagoodcar.com/vehicle-check): Search UK vehicle records by registration plate for specifications, MOT pass rates, and advisories
- [Common Car Problems](https://isitagoodcar.com/problems): Directory of 2,500+ common faults, repair costs, and reliability ratings across UK manufacturers
- [Fuel Prices](https://isitagoodcar.com/fuel-prices): UK daily fuel price tracking, regional price comparisons, and station finder
- [Vehicle Comparison](https://isitagoodcar.com/compare): Side-by-side vehicle specification, running cost, and reliability comparison
- [Vehicle Directory](https://isitagoodcar.com/directory): Index of UK vehicles by manufacturer, model generation, and production year
- [Trending Vehicles](https://isitagoodcar.com/trending): Most frequently checked and researched vehicles in the UK
- [Plate History](https://isitagoodcar.com/plate-history): Registration plate age, region prefix identifier, and issuance timeline
- [Car History Check](https://isitagoodcar.com/car-history-check): Buyer guide for Experian vehicle checks, write-off categories, finance, and mileage anomalies
- [Vehicle Alternatives](https://isitagoodcar.com/alternatives): Alternative vehicle recommendations based on segment and budget
- [Blog](https://isitagoodcar.com/blog): Automotive buyer guides, MOT advice, and UK used car market analysis

## API & Agent Resources

- [Agent Authentication Guide](https://isitagoodcar.com/auth.md): Authentication and registration instructions for AI agents and automated clients (Markdown)
- [Vehicle Lookup Agent Skill](https://isitagoodcar.com/.well-known/agent-skills/vehicle-lookup.md): Agent Skill specification for querying vehicle specifications and MOT history (Markdown)
- [Agent Skills Discovery](https://isitagoodcar.com/.well-known/agent-skills/index.json): Machine-readable Agent Skills discovery catalog (JSON)
- [Model Context Protocol Server Card](https://isitagoodcar.com/.well-known/mcp/server-card.json): MCP server definition and lookup tool schema (JSON)
- [OpenAPI Specification](https://isitagoodcar.com/openapi.json): OpenAPI 3.0 REST schema for vehicle data and system endpoints (JSON)
- [API Catalog](https://isitagoodcar.com/.well-known/api-catalog): RFC 6690 linkset catalog of discoverable API endpoints and documentation
- [OAuth 2.0 Authorization Server](https://isitagoodcar.com/.well-known/oauth-authorization-server): RFC 8414 OAuth 2.0 authorization server metadata
- [OpenID Connect Configuration](https://isitagoodcar.com/.well-known/openid-configuration): OpenID Connect discovery document
- [OAuth Protected Resource](https://isitagoodcar.com/.well-known/oauth-protected-resource): RFC 9207 OAuth 2.0 protected resource metadata
- [Pricing & Subscription Plans](https://isitagoodcar.com/pricing.md): Pricing breakdown for free checks, premium reports (£20k Experian guarantee), and API tiers (Markdown)

## Optional

- [Full Context Document](https://isitagoodcar.com/llms-full.txt): Comprehensive multi-section context file detailing platform architecture, features, and endpoints
- [Canonical XML Sitemap Index](https://isitagoodcar.com/sitemap-index.xml): XML sitemap index referencing all active vehicle and static sitemap shards
- [Tier 1 High-Priority Sitemap](https://isitagoodcar.com/sitemap-T1-index.xml): XML sitemap index for top-viewed vehicle history reports
- [Tier 2 Core Content Sitemap](https://isitagoodcar.com/sitemap-T2-index.xml): XML sitemap index for core static hubs, problem guides, and directory pages
- [About IsItAGoodCar](https://isitagoodcar.com/about): Company background, mission, and automotive data methodology
- [Contact & Support](https://isitagoodcar.com/contact): Inquiries, enterprise support, and custom data requests