Show HN: AgentFirstStack – analytics, tags, email and replay your agent sets up

StartGlobal-AI released AgentFirstStack, an MIT-licensed, open-source bundle of analytics, tag management, email inboxes and session replay that an AI coding agent installs by making HTTP requests, with no signup form, verification email or dashboard required. The project issues one API key that works across every service, exposes each component through a REST API, an MCP server and a plain-text manual listed in /llms.txt, and deploys to a user's own Cloudflare account with four commands (git clone, pnpm install, pnpm afs init, pnpm afs deploy). AgentFirstStack positions itself as a replacement for Google Analytics, Google Tag Manager, Gmail-per-project and Hotjar or Clarity, sending conversions server-side to Google Ads, Meta and TikTok conversion APIs using the customer's own credentials.

Analytics instead of Google Analytics See where every visitor comes from +18% vs previous 12 weeks - Cities - Goals and revenue - No cookies Add analytics with Claude Code https://agentfirststack.com/guides/add-analytics-with-claude-code Analytics, tag management with server-side conversion tracking, email inboxes and session replay. No signup form, no verification email, no dashboard to click through. Free and open source. Paste it into Claude Code, Cursor, Codex or any agent that can make HTTP requests. It tells your agent where the manual is. Nothing to configure, and no account to create first. One request gets a key that works on every service. No email, password or verification. The agent installs, verifies and fixes as it goes. Your ad accounts stay yours. The agent asks for the exact IDs and tokens it needs from Google Ads, Meta or TikTok, and tells you where to find them. It also gives you a link to claim the project, so you can see everything in a dashboard. Each has a REST API, an MCP server and a plain-text manual. Tags instead of Google Tag Manager purchase $49.00 evt 8f2a Sent from the browser and the server with one event id, so each platform counts it once. Mail instead of a Gmail account per project 482913 verify link signups@agentfirststack.com Replay instead of Hotjar or Clarity /pricing plan is undefined / Text and form fields are masked in the browser before anything is sent. Conversions go from your site and your backend to each ad platform's conversion API, using your own credentials. Ad blockers and short-lived browser cookies don't lose them. No email, captcha or approval. The key is the account. Nothing hides behind a settings page. /llms.txt https://agentfirststack.com/llms.txt lists every endpoint, tool and field. The agent verifies its own work instead of guessing. Creating the same thing twice returns the first one. Each one carries a hint the agent can act on. MIT licensed. Four commands deploy it to your own Cloudflare account. git clone https://github.com/StartGlobal-AI/agentfirststack cd agentfirststack && pnpm install pnpm afs init mystack --domain example.com --account <id pnpm afs deploy mystack How AgentFirstStack compares with the MCP servers you may already use.