# Admux > Admux is an HTTP API, MCP server and web app for buying ads in ChatGPT, Google Search (including AI Overviews and AI Mode placements) and the Gravity network from one prepaid USD balance. Advertisers or their agents supply the creative; Admux screens it per channel, reserves the budget, and settles on reported spend. Channel facts on this site are sourced from each provider’s own documentation and dated. Admux can’t guarantee approval, delivery or placement in any AI answer. ## Docs - [API reference](https://admux.ai/docs): every endpoint, scope, parameter and field - [HTTP API guide](https://admux.ai/developers/api): quickstart, scopes, spending limits, retries - [MCP server guide](https://admux.ai/developers/mcp): connect Claude Code, Cursor or Codex - [agents.txt](https://admux.ai/agents.txt): step-by-step workflow for agents - [OpenAPI document](https://api.admux.ai/openapi.json) ## MCP - [MCP endpoint (Streamable HTTP, Bearer API key)](https://api.admux.ai/mcp) - [MCP Server Card](https://api.admux.ai/mcp/server-card) ## Channels - [ChatGPT ads](https://admux.ai/channels/chatgpt): ChatGPT ads are sponsored cards shown below a ChatGPT answer to people on the Free and Go plans - [Google AI Overviews and AI Mode ads](https://admux.ai/channels/google-search-ai): Ads in AI Overviews and AI Mode are not a separate product - [Gravity ad network](https://admux.ai/channels/gravity): Gravity places sponsored suggestions inside AI apps: chat apps, coding assistants, consumer AI apps and AI search - [Channels compared](https://admux.ai/channels) ## Pricing and minimums - [ChatGPT ads pricing and minimums tracker](https://admux.ai/chatgpt-ads/pricing): official USD 25 daily minimum, no rate card, dated third-party reports - [ChatGPT ads countries](https://admux.ai/chatgpt-ads/countries): 89 self-serve countries with launch dates - [ChatGPT ad specs](https://admux.ai/specs/chatgpt) - [Google AI ad specs](https://admux.ai/specs/google-search-ai) - [Gravity ad specs](https://admux.ai/specs/gravity) ## Policies - [Ad policy by category](https://admux.ai/policies): 14 categories across ChatGPT, Google and Gravity ## Data - [channels.json](https://admux.ai/channels.json): every channel fact with source URL and verification date - [specs.json](https://admux.ai/specs.json): creative limits per channel ## Guides - [How to advertise on ChatGPT](https://admux.ai/guides/how-to-advertise-on-chatgpt) - [How to run ads in Google AI Overviews and AI Mode](https://admux.ai/guides/ads-in-ai-overviews-and-ai-mode) - [How to advertise on the Gravity ad network](https://admux.ai/guides/how-to-advertise-on-gravity) - [How to launch ads in AI chatbots](https://admux.ai/guides/ads-in-ai-chatbots) - [Buy ChatGPT ads through an API or MCP](https://admux.ai/guides/buy-chatgpt-ads-api-mcp) ## Comparisons - [ChatGPT ads vs Google ads in AI answers](https://admux.ai/compare/chatgpt-ads-vs-google-ads) - [ChatGPT ads vs the Gravity ad network](https://admux.ai/compare/chatgpt-ads-vs-gravity) - [Admux vs OpenAI Ads Manager for ChatGPT ads](https://admux.ai/compare/admux-vs-openai-ads-manager) - [Admux vs Google Ads for AI Overviews and AI Mode ads](https://admux.ai/compare/admux-vs-google-ads) - [Admux vs buying Gravity ads directly](https://admux.ai/compare/admux-vs-gravity-direct) - [AI ad networks compared: Gravity, Koah, Imprezia, Thrad and Kontext](https://admux.ai/compare/ai-ad-networks-compared) ## Glossary - [AI advertising glossary](https://admux.ai/glossary): 25 terms ## Optional - [Alcohol on ChatGPT](https://admux.ai/policies/chatgpt/alcohol) - [Gambling on ChatGPT](https://admux.ai/policies/chatgpt/gambling) - [Healthcare and medicines on ChatGPT](https://admux.ai/policies/chatgpt/healthcare) - [Supplements and weight loss on ChatGPT](https://admux.ai/policies/chatgpt/supplements-weight-loss) - [Financial services on ChatGPT](https://admux.ai/policies/chatgpt/financial-services) - [Dating on ChatGPT](https://admux.ai/policies/chatgpt/dating) - [AI companions on ChatGPT](https://admux.ai/policies/chatgpt/ai-companions) - [Tobacco, nicotine and vapes on ChatGPT](https://admux.ai/policies/chatgpt/tobacco-nicotine-vapes) - [Weapons on ChatGPT](https://admux.ai/policies/chatgpt/weapons) - [Political and issue ads on ChatGPT](https://admux.ai/policies/chatgpt/political) - [Legal services on ChatGPT](https://admux.ai/policies/chatgpt/legal-services) - [Adult and sexual content on ChatGPT](https://admux.ai/policies/chatgpt/adult-sexual) - [Housing and jobs on ChatGPT](https://admux.ai/policies/chatgpt/housing-employment) - [Alcohol on Google AI](https://admux.ai/policies/google-search-ai/alcohol) - [Gambling on Google AI](https://admux.ai/policies/google-search-ai/gambling) - [Healthcare and medicines on Google AI](https://admux.ai/policies/google-search-ai/healthcare) - [Supplements and weight loss on Google AI](https://admux.ai/policies/google-search-ai/supplements-weight-loss) - [Financial services on Google AI](https://admux.ai/policies/google-search-ai/financial-services) - [Crypto and digital assets on Google AI](https://admux.ai/policies/google-search-ai/crypto) - [Dating on Google AI](https://admux.ai/policies/google-search-ai/dating) - [Tobacco, nicotine and vapes on Google AI](https://admux.ai/policies/google-search-ai/tobacco-nicotine-vapes) - [Weapons on Google AI](https://admux.ai/policies/google-search-ai/weapons) - [Political and issue ads on Google AI](https://admux.ai/policies/google-search-ai/political) - [Adult and sexual content on Google AI](https://admux.ai/policies/google-search-ai/adult-sexual) - [Housing and jobs on Google AI](https://admux.ai/policies/google-search-ai/housing-employment) - [Alcohol on Gravity](https://admux.ai/policies/gravity/alcohol) - [Gambling on Gravity](https://admux.ai/policies/gravity/gambling) - [Healthcare and medicines on Gravity](https://admux.ai/policies/gravity/healthcare) - [Financial services on Gravity](https://admux.ai/policies/gravity/financial-services) - [Crypto and digital assets on Gravity](https://admux.ai/policies/gravity/crypto) - [Dating on Gravity](https://admux.ai/policies/gravity/dating) - [Tobacco, nicotine and vapes on Gravity](https://admux.ai/policies/gravity/tobacco-nicotine-vapes) - [Weapons on Gravity](https://admux.ai/policies/gravity/weapons) - [Political and issue ads on Gravity](https://admux.ai/policies/gravity/political) - [Adult and sexual content on Gravity](https://admux.ai/policies/gravity/adult-sexual)