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

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.

Your coding agentyourshop, main branch

Done Replay

Set up AgentFirstStack for this project.

Pasted prompt

On it. I'll read the manual first, then set up analytics, conversion tracking and an inbox.

This is a Next.js app, so the analytics snippet goes in the root layout.

• <script defer src="https://analytics.agentfirststack.com/s.js" data-site="site_9x2f" />

verifyreceiving visits

Now conversion tracking. I found a checkout and a signup form.

Done. Analytics, conversion tracking and the inbox are set up and verified. Open your claim link to see it all in a dashboard. To send conversions to your ad accounts I need two things from you:

How it works

Paste one prompt

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.

United States33%

United Kingdom14%

Germany9%

India8%

Cities

Goals and revenue

No cookies

Add analytics with Claude Code

Tags instead of Google Tag Manager

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

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.

/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

Coming from another tool?

How AgentFirstStack compares with the MCP servers you may already use.