# IsItAGoodCar — Full Context

> IsItAGoodCar is a comprehensive UK vehicle intelligence platform providing vehicle specification lookups, MOT test histories, road tax status, common problem analysis, and fuel price tracking for UK vehicles.

For a concise summary and agent index following the llms.txt standard, see [llms.txt](https://isitagoodcar.com/llms.txt).

## What We Do

IsItAGoodCar helps buyers, sellers, and owners make informed decisions about used cars. Users enter any UK registration plate to get instant access to vehicle specifications, complete MOT history, road tax status, common problem advisories, and expert mechanical summaries.

## Key Features

### Vehicle Lookup & History (`/vehicle-check/[reg]`)
- Enter any UK registration plate to get vehicle specs (make, model, year, fuel type, colour, engine size, Euro status).
- Full DVSA MOT test history with pass/fail records, recorded mileage points, advisory notices, and failure items.
- Real-time DVLA road tax status and MOT test expiry dates.
- AI-generated mechanical summaries and vehicle reliability scores.
- Vehicle valuation and market comparisons.

### Premium Extended Check
- Write-off and condition check powered by Experian provenance data (Categories A, B, S, N).
- Outstanding finance check.
- Stolen vehicle register check.
- Import/export history and plate change records.
- Mileage anomaly and clocking detection.
- £20,000 Experian Data Guarantee.

### Common Problems & Reliability (`/problems`)
- Database of 2,500+ common car faults across 66 UK vehicle manufacturers.
- Failure severity ratings, symptom descriptions, and estimated repair costs.
- MOT failure trends and preventative maintenance advice.

### Fuel Prices (`/fuel-prices`)
- UK-wide daily fuel price tracking across major supermarket and brand networks.
- Price trends, regional comparisons, and local station lookup.

### Vehicle Directory & Comparisons
- Browse vehicles by manufacturer, model, and registration generation (`/directory`).
- Side-by-side vehicle comparisons of running costs, MOT pass rates, and specifications (`/compare`).
- Alternative vehicle recommendations by category and price (`/alternatives`).

## User Base & Business Model

- **Audience**: UK consumers researching used cars before purchase, automotive professionals, car dealers, and insurers needing accurate vehicle provenance.
- **Free Tier**: Basic vehicle specification lookup, full MOT test history, road tax status, fuel price comparison, and vehicle directory browsing.
- **Premium Extended Check**: Comprehensive vehicle history reports with £20,000 Experian data guarantee (from £8.99 per check).
- **API Subscriptions**: Programmatic data access for businesses (Starter at £29/mo, Business at £99/mo, and Enterprise custom tiers).

## Technical Stack

- **Frontend**: Next.js 16 (React 19), TypeScript, Tailwind CSS, Radix UI
- **Backend**: Python 3.12, Django 5, Django REST Framework
- **Database**: PostgreSQL 16
- **Cache / Queue**: Redis, Celery
- **Infrastructure**: Docker Compose, Nginx, Cloudflare CDN

## AI & Agent Integration

IsItAGoodCar is built for automated agents and language models:

- **Content Negotiation**: Send an `Accept: text/markdown` header to receive clean, token-efficient Markdown versions of web pages.
- **Agent Skill**: Vehicle lookup agent skill specification available at `https://isitagoodcar.com/.well-known/agent-skills/vehicle-lookup.md`.
- **Agent Skills Discovery**: Schema-compliant skills index at `https://isitagoodcar.com/.well-known/agent-skills/index.json`.
- **Model Context Protocol (MCP)**: Server card and tool schema at `https://isitagoodcar.com/.well-known/mcp/server-card.json`.
- **OpenAPI Schema**: OpenAPI 3.0 specification available at `https://isitagoodcar.com/openapi.json`.
- **API Documentation**: Agent authentication and endpoint guidelines at `https://isitagoodcar.com/auth.md`.
- **OAuth 2.0 / OIDC**: RFC 8414 and OpenID Connect discovery at `/.well-known/oauth-authorization-server` and `/.well-known/openid-configuration`.
- **API Catalog**: RFC 6690 linkset catalog at `/.well-known/api-catalog`.

### Crawler Access Policy

All major AI search and evaluation crawlers are explicitly allowed:
- GPTBot and ChatGPT-User (OpenAI)
- ClaudeBot and anthropic-ai (Anthropic)
- PerplexityBot (Perplexity)
- Google-Extended (Google Gemini / AI Overviews)
- Applebot-Extended (Apple Intelligence)
- Meta-ExternalAgent (Meta)
- Bingbot (Microsoft Copilot)

## Key API Endpoints

- `GET /api/v1/vehicles/lookup/{registration}/` — Vehicle lookup (specs, MOT history, tax)
- `GET /api/v1/fuel-prices/` — National and regional fuel price data
- `GET /api/v1/vehicles/trending/` — Most popular vehicle lookups
- `GET /api/v1/health/` — System health check

## Sitemaps

- [Canonical Root Sitemap Index](https://isitagoodcar.com/sitemap-index.xml)
- [Tier 1 Top Vehicle Reports](https://isitagoodcar.com/sitemap-T1-index.xml)
- [Tier 2 Core Content & Guides](https://isitagoodcar.com/sitemap-T2-index.xml)

## Pricing

Details on credit packs and API subscriptions: [pricing.md](https://isitagoodcar.com/pricing.md).

## Contact & Support

For enterprise API access, partnerships, or support: [Contact Page](https://isitagoodcar.com/contact).