AgentFirstStack Mail

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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

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:

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_):

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

Or one per service:

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:

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

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.