AgentFirstStack Tags

com.agentfirststackPublished by agentfirststack.comOfficial publisherv0.1.0Updated Nov 4, 2026

Tag manager with server-side conversions for GA4, Google Ads, Meta and TikTok, set up by an agent.

The publisher's own server: AgentFirstStack Analytics

VerifiedStreamable HTTPWeb executableData & AnalyticsBusiness & Commerce

Overview

AI-generated overview

Remote tag manager and server-side conversion router that lets an assistant set up GA4, Google Ads, Meta and TikTok conversion tracking.

What you can do
  • Define a conversion once and route it to GA4, Google Ads, Meta and TikTok from both browser pixel and server, sharing one event id so each platform counts it once
  • Scan, validate, preview, test and publish tag containers
  • Manage tags and conversion destinations through API-backed tools rather than a settings dashboard
  • Verify each setup step through the service's own endpoints and manual
When to use it
Use it when an assistant should set up or maintain conversion tracking and tag containers for a website without a human clicking through a tag manager UI, especially when server-side conversion routing to ad platforms is needed.
Requirements
A remote MCP endpoint at tags.agentfirststack.com over streamable HTTP. Authentication is required: an Authorization bearer API key obtained from a single signup request, or OAuth. A hosted account is free with fair-use limits; self-hosting runs on Cloudflare Workers in your own account.
Before you install
The server holds an API key in the Authorization header that works across all AgentFirstStack services, so treat it as a shared secret. Publishing tags and routing conversions changes live tracking and sends event data to third parties such as GA4, Google Ads, Meta and TikTok. Self-hosting requires a Cloudflare API token and deploys resources into your own Cloudflare account.

Installation

In SourceWeft

  1. Open AgentFirstStack Tags in the dashboard and add it to a workspace.
  2. Connect the required credentials. They are stored privately and never shown on public pages.
  3. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/com.agentfirststack%2Ftags/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config. The client completes OAuth sign-in on first connect.

{
  "mcpServers": {
    "agentfirststack-tags": {
      "type": "http",
      "url": "https://tags.agentfirststack.com/mcp"
    }
  }
}

README

[Image]

AgentFirstStack

Analytics, tag management, email inboxes and session replay that an AI agent sets up by itself.
No signup form, no verification email, no dashboard to click through. Free to use, and open source.

agentfirststack.com · Manual · Self-host · Architecture

[CI] [MIT license]

Every new website needs the same infrastructure: analytics, a tag manager with conversion tracking, and an email address to sign up for everything else. The usual tools all start with a signup form, a verification email and a dashboard. Coding agents can't get past those steps alone.

AgentFirstStack is that infrastructure, rebuilt so an agent can do the whole job:

  • One request gets an account. POST /v1/signup returns a key that works on every service.
  • Everything is an API call and an MCP tool. Nothing is hidden behind a settings page.
  • The manual is a text file. Each service serves /llms.txt with every endpoint, tool and field.
  • Every step can be verified. The agent checks its own work instead of guessing.
  • Humans optional. When it's done, the agent hands its person a claim link. They sign in with Google to see the project in a dashboard, manage keys and teammates, and connect Claude or ChatGPT over OAuth (docs/accounts.md).

Services

What it doesInstead of
AnalyticsCookieless web analytics. Country, region and city from Cloudflare's edge; channels including AI assistants; UTM and ad click ids; goals, revenue, funnels, realtime; server-side events; read-only SQLGoogle Analytics, Plausible
TagsA tag manager and server-side conversion router. Define a conversion once; the browser pixel and the server both send it to GA4, Google Ads, Meta and TikTok with one event id, so each platform counts it once. Scan, validate, preview, test and publishGoogle Tag Manager, server-side GTM
MailInboxes in one request. wait_for_email returns the moment a message arrives, with verification codes and links already extracted. Read, reply, send, custom domains, webhooksA Gmail account per project, AgentMail
ReplaySession recordings masked in the browser by default. Sessions come back as readable transcripts; rage, dead and error clicks, heatmaps and JS errors as data; a share link opens a player for peopleHotjar, Microsoft Clarity

Quick start

Hosted (free)

Copy the prompt from agentfirststack.com into Claude Code, Cursor, Codex or any agent that can make HTTP requests. Or do it by hand:

sh
curl -X POST https://agentfirststack.com/v1/signup# { "api_key": "afs_...", "mcp": { ... }, "next_steps": [ ... ] }
curl -X POST https://analytics.agentfirststack.com/v1/sites \  -H "Authorization: Bearer $AGENTFIRSTSTACK_API_KEY" -H 'content-type: application/json' \  -d '{"domain":"example.com"}'

Add one MCP server for every service (tools prefixed analytics_, tags_, mail_, replay_):

sh
claude mcp add --transport http afs https://agentfirststack.com/mcp --header "Authorization: Bearer $AGENTFIRSTSTACK_API_KEY"

Or one per service:

sh
claude mcp add --transport http afs-analytics https://analytics.agentfirststack.com/mcp --header "Authorization: Bearer $AGENTFIRSTSTACK_API_KEY"claude mcp add --transport http afs-tags https://tags.agentfirststack.com/mcp --header "Authorization: Bearer $AGENTFIRSTSTACK_API_KEY"claude mcp add --transport http afs-mail https://mail.agentfirststack.com/mcp --header "Authorization: Bearer $AGENTFIRSTSTACK_API_KEY"claude mcp add --transport http afs-replay https://replay.agentfirststack.com/mcp --header "Authorization: Bearer $AGENTFIRSTSTACK_API_KEY"

The hosted version has fair-use limits, listed in the manual.

Self-hosted

Everything runs on Cloudflare Workers in your own account:

sh
git clone https://github.com/StartGlobal-AI/agentfirststack && cd agentfirststackpnpm installpnpm afs init mystack --domain example.com --account <cloudflare-account-id>pnpm afs deploy mystackCLOUDFLARE_API_TOKEN=... pnpm afs email mystack     # inbound + outbound mailpnpm afs check mystack

See docs/self-hosting.md for requirements, signup modes, limits and updates.

How it's built

TypeScript on Cloudflare Workers with Hono and zod. Storage:

  • D1: configuration and the shared identity database.
  • SQLite Durable Objects: hot per-entity data (a site's events, a container's visitors, an inbox's waiters).
  • R2: mail blobs and replay recording chunks.
  • Queues: retried delivery to ad platforms and webhooks.
  • Email Routing and Email Sending: mail in and out.
site/        landing page, platform manual, platform signup      agentfirststack.comanalytics/   web analytics                                        analytics.agentfirststack.comtags/        tag manager + conversion APIs                        tags.agentfirststack.commail/        inboxes, sending, domains, webhooks                  mail.agentfirststack.comreplay/      session replay, signals, heatmaps, share player          replay.agentfirststack.comshared/      @afs/shared: auth, signup, errors, MCP handlerscripts/     pnpm afs: the deployment tooldeploy/      deployment profiles (yours; the agentfirststack.com one is kept private)docs/        architecture, self-hosting, operations, development

More in docs/architecture.md.

Development

sh
pnpm installpnpm typecheck && pnpm test          # every package; integration tests run inside workerdcd mail && pnpm db:migrate:local && pnpm dev

docs/development.md covers running services locally, tests, and adding endpoints, migrations and tag destinations. docs/operations.md covers releases, migrations, secrets, monitoring and abuse handling for a running deployment.

Contributing

Issues and pull requests are welcome. Read CONTRIBUTING.md first; it's short. Report security issues privately as described in SECURITY.md.

License

MIT. Built and hosted by StartGlobal.

Source: README.md at commit 678e2eb

Tools

0
This server asks you to sign in, so SourceWeft could not read its tools without an account and has not indexed them. What a connected account sees can depend on that account and its permissions.

Version history

1
  1. v0.1.0LatestNov 4, 2026

Score

85% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts

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