# Cite42

> Cite42 is a pay-per-call MCP server and API that gives AI agents AI visibility,
> citation, SEO keyword and trend data. Query the
> models behind ChatGPT, Claude, Perplexity and Gemini, plus Google AI
> Overviews, for structured answers, citations, brand rankings, competitor
> comparisons, and sentiment. Measured through each provider's official API
> with native web search enabled, not by scraping consumer chat interfaces
> (see /methodology).
> Add SEO keyword data, Google Trends, Reddit, and YouTube signals through the
> same account. AI-model calls start at $0.01 per selected model.
> New accounts receive $1 free to try; top-ups start at
> $25. Your balance never expires, with no subscription or seat fees.

## Docs (REST API)
- [Quickstart](https://www.cite42.dev/docs/api)
- [AI Search](https://www.cite42.dev/docs/api/search)
- [AI Visibility](https://www.cite42.dev/docs/api/rankings)
- [AI Competitors](https://www.cite42.dev/docs/api/compare)
- [AI Citations](https://www.cite42.dev/docs/api/citations)
- [AI Sentiment](https://www.cite42.dev/docs/api/sentiment)
- [Recommendations](https://www.cite42.dev/docs/api/recommendations)
- [Keyword Research](https://www.cite42.dev/docs/api/keywords)
- [Keyword Research Batch](https://www.cite42.dev/docs/api/keywords-batch)
- [Google Trends](https://www.cite42.dev/docs/api/trends)
- [Reddit Trends](https://www.cite42.dev/docs/api/reddit-trends)
- [YouTube Trends](https://www.cite42.dev/docs/api/youtube-trends)
- [Usage](https://www.cite42.dev/docs/api/usage)
- [Content Gap Analysis](https://www.cite42.dev/docs/api/workflows/content-opportunities)
- [Topic Demand](https://www.cite42.dev/docs/api/workflows/topic-demand)
- [AI Prompt Research](https://www.cite42.dev/docs/api/workflows/ai-prompt-map)
- [Competitor Content Analysis](https://www.cite42.dev/docs/api/workflows/competitor-content)
- [AI Citation Gaps](https://www.cite42.dev/docs/api/workflows/ai-citation-gaps)
- [Content Brief](https://www.cite42.dev/docs/api/workflows/content-brief)
- [Tracker API](https://www.cite42.dev/docs/api/trackers)
- [Per-model pricing](https://www.cite42.dev/docs/guides/per-model-pricing)
- [Authentication](https://www.cite42.dev/docs/authentication)
- [Balance & billing](https://www.cite42.dev/docs/credits)
- [Errors](https://www.cite42.dev/docs/errors)
- [Rate limits](https://www.cite42.dev/docs/rate-limits)

## Docs (MCP server)
- [Quickstart](https://www.cite42.dev/docs)
- [Overview](https://www.cite42.dev/docs/mcp/tools)
- [AI Search](https://www.cite42.dev/docs/mcp/tools/search)
- [AI Visibility](https://www.cite42.dev/docs/mcp/tools/rankings)
- [AI Competitors](https://www.cite42.dev/docs/mcp/tools/compare)
- [AI Citations](https://www.cite42.dev/docs/mcp/tools/citations)
- [AI Sentiment](https://www.cite42.dev/docs/mcp/tools/sentiment)
- [Recommendations](https://www.cite42.dev/docs/mcp/tools/recommendations)
- [Keyword Research](https://www.cite42.dev/docs/mcp/tools/keywords)
- [Keyword Research Batch](https://www.cite42.dev/docs/mcp/tools/keywords-batch)
- [Google Trends](https://www.cite42.dev/docs/mcp/tools/trends)
- [Reddit Trends](https://www.cite42.dev/docs/mcp/tools/reddit-trends)
- [YouTube Trends](https://www.cite42.dev/docs/mcp/tools/youtube-trends)
- [Content Gap Analysis](https://www.cite42.dev/docs/mcp/workflows/content-opportunities)
- [Topic Demand](https://www.cite42.dev/docs/mcp/workflows/topic-demand)
- [AI Prompt Research](https://www.cite42.dev/docs/mcp/workflows/ai-prompt-map)
- [Competitor Content Analysis](https://www.cite42.dev/docs/mcp/workflows/competitor-content)
- [AI Citation Gaps](https://www.cite42.dev/docs/mcp/workflows/ai-citation-gaps)
- [Content Brief](https://www.cite42.dev/docs/mcp/workflows/content-brief)
- [Tracker tools](https://www.cite42.dev/docs/mcp/trackers)
- [Balance & billing](https://www.cite42.dev/docs/credits)
- [Rate limits](https://www.cite42.dev/docs/rate-limits)

## Tools
- [All tools](https://www.cite42.dev/tools): Every Cite42 tool in one place.
- [AI Search](https://www.cite42.dev/tools/ai-search): Every AI model's full answer and sources.
- [AI Visibility](https://www.cite42.dev/tools/ai-visibility): How often AI mentions your brand, and where.
- [AI Competitors](https://www.cite42.dev/tools/ai-competitors): Compare your brand with named competitors.
- [AI Citations](https://www.cite42.dev/tools/ai-citations): Collect the sources AI models cite.
- [AI Sentiment](https://www.cite42.dev/tools/ai-sentiment): Score how AI describes your brand.
- [Keyword Research](https://www.cite42.dev/tools/keyword-research): Search volume, CPC & keyword ideas.
- [Google Trends](https://www.cite42.dev/tools/google-trends): Interest over time and rising queries.
- [Reddit Trends](https://www.cite42.dev/tools/reddit-trends): Relevant discussions, summarized.
- [YouTube Trends](https://www.cite42.dev/tools/youtube-trends): Video angles and creator demand signals.

## Trackers
Each tracker runs one of the AI tools on a weekly or monthly schedule and stores every result.
- [All trackers](https://www.cite42.dev/trackers): How trackers work, and every tracker.
- [AI Visibility Tracker](https://www.cite42.dev/trackers/ai-visibility): Track mentions and relative position.
- [AI Competitor Tracker](https://www.cite42.dev/trackers/ai-competitors): Compare brands and co-mentions.
- [AI Citation Tracker](https://www.cite42.dev/trackers/ai-citations): Watch cited sources and URLs.
- [AI Sentiment Tracker](https://www.cite42.dev/trackers/ai-sentiment): Monitor tone and phrases.

## Workflows
- [All workflows](https://www.cite42.dev/workflows): Workflows that combine several tools in one call.
- [Content Gap Analysis](https://www.cite42.dev/workflows/content-gap-analysis): Find topics worth creating.
- [AI Prompt Research](https://www.cite42.dev/workflows/ai-prompt-research): Discover prompts worth tracking.
- [Topic Demand](https://www.cite42.dev/workflows/topic-demand): Measure demand across channels.
- [Competitor Content Analysis](https://www.cite42.dev/workflows/competitor-content-analysis): Find gaps against rivals.
- [AI Citation Gaps](https://www.cite42.dev/workflows/ai-citation-gaps): Find missing source mentions.
- [Content Brief](https://www.cite42.dev/workflows/content-brief): Evidence-backed brief.

## Key pages
- [Product overview](https://www.cite42.dev): Cite42's AI visibility and SEO data MCP server and API.
- [Pricing](https://www.cite42.dev/pricing)
- [Documentation](https://www.cite42.dev/docs)
- [Blog](https://www.cite42.dev/blog)

## Writing
- [Best AI visibility MCP servers: check brand mentions from Claude and ChatGPT](https://www.cite42.dev/blog/best-ai-visibility-mcp-apis)
- [Google Trends API: the official alpha, pytrends alternatives and pricing](https://www.cite42.dev/blog/google-trends-api)
- [The best AI visibility tools in 2026: dashboards and pay-per-call options compared](https://www.cite42.dev/blog/ai-visibility-tools)
- [Content gap analysis for AI answers: a worked example with citations and keyword data](https://www.cite42.dev/blog/content-gap-analysis-ai-citations-keywords)
- [The best keyword research APIs for developers in 2026](https://www.cite42.dev/blog/keyword-research-apis)
- [ChatGPT keyword research with real search volume: a step-by-step guide](https://www.cite42.dev/blog/chatgpt-keyword-research)
- [The best DataForSEO alternatives in 2026: pricing, MCP and APIs compared](https://www.cite42.dev/blog/dataforseo-alternatives)
- [AI citation tracking: see which pages ChatGPT, Claude and Perplexity cite](https://www.cite42.dev/blog/ai-citation-tracking)
- [The best AI visibility APIs: pay-as-you-go and enterprise options compared](https://www.cite42.dev/blog/ai-visibility-apis)
- [Google Trends MCP servers compared, with a real analysis in Claude](https://www.cite42.dev/blog/google-trends-mcp)
- [The best SEO MCP servers in 2026: Semrush, Ahrefs, DataForSEO and more](https://www.cite42.dev/blog/seo-mcp-servers)
- [Claude Code for SEO: keyword research with real search volume](https://www.cite42.dev/blog/keyword-research-claude-codex-seo-data)
- [AI visibility tracking: how we measured our own brand in 54 AI answers](https://www.cite42.dev/blog/track-ai-visibility-claude-codex)
- [AEO and GEO without another $100-a-month subscription](https://www.cite42.dev/blog/aeo-geo-tracking-without-subscription)