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The Technical Founder Kit logoThe Technical Founder KitFrom Doc to Deployed$49
For engineers who want to ship their own product

You can code.

Claude Code just can’t remember.

Your side project didn’t die because you couldn’t build it. It died on session 3, when the agent reinvented the architecture you’d already decided on. This kit gives the agent the memory it’s missing. It’s the method I used to build a working MicroSaaS solo with Claude Code, and the product is the proof.

  • The system that keeps Claude Code coherent from session 1 to 20, so you stop re-litigating decisions you already made
  • A complete production codebase (auth, plans, payments, admin, async queue) so you don’t start from scratch
  • Built with the exact method I used to ship a working MicroSaaS, solo. The product is the proof, not a tutorial
See the offer — $49
Without memory · session 3
architecture.ts
  // data layer — locked in session 1
- Supabase + Row Level Security
+ // session 3: agent scaffolded Prisma?!
+ // contradicts the schema we agreed on
+ // reverting the architecture. again.
With the kit · every session
CLAUDE.md
# CLAUDE.md — the agent's memory

Stack locked. Decisions persist.
✓ 11 Spec Templates
✓ Spec-Driven Workflow
✓ Production Codebase

Built on

Next.jsSupabaseUpstashInngestResendStripeVercel
  • 11 spec templates
  • 1 production codebase
  • 2,193 passing tests
  • 1 methodology guide
  • 1 Spec-Driven Workflow module

You opened Claude Code with a clear idea. Then you lost the thread.

The first session feels like magic: code just flows. By the third, the agent suggests an architecture different from the one you chose. By the seventh, you’ve got two implementations of the same feature and no one remembers why.

It’s not your fault, and it’s not the model’s. AI agents have no persistent memory. Every session starts cold, infers what was decided before, and infers it differently each time.

The project that was going to be quick became a Frankenstein parked for weeks. You didn’t quit for lack of skill. You quit because the agent lost the thread, and the code drifted a little further out of sync every session.

auth.ts
- // session 1: clean auth flow, one source of truth
+ // session 3: agent added a SECOND auth check here??
+ // ...that contradicts the first one. which is right?
An engineer frustrated as a project fragments around them, session after session

The method, in 3 steps

Document first, code second. Every Claude Code session opens by reading the context and closes with decisions on record. Instead of improvising each time, the agent follows a plan you defined.

Step 01

Document before you code

Fill in the 11 spec templates: business model, PRD, database schema, CLAUDE.md, architecture, design system, tests, events. Everything the agent needs to build without guessing, and guessing differently every session.

11 templates
  • Business model
  • PRD
  • DB schema
  • CLAUDE.md
  • Architecture
  • ADR
  • Session
  • Checklists
  • Design system
  • Tests
  • Events
Step 02

Run every session in 3 phases

Phase 0: the agent reads the docs. Phase 1: it validates and flags conflicts. Phase 2: it implements the declared scope autonomously — you review at the end, by reading the branch’s commits. Skip this order and sessions drift, and the code goes inconsistent.

Phase 0

Reads the docs

Phase 1

Validates & flags conflicts

Phase 2

Implements the declared scope

Step 03

Record every decision as an ADR

Each relevant architectural decision becomes a record: context, decision, rationale, rejected alternatives. Next session, the agent reads the ADR instead of re-litigating what you already decided.

ADR-001accepted

Inngest for async jobs

Context · Decision · Rationale · Alternatives

ADR-002accepted

Supabase RLS over app checks

Context · Decision · Rationale · Alternatives

ADR-003accepted

Idempotent Stripe webhooks

Context · Decision · Rationale · Alternatives

The agent reads these next session

I built a real, working MicroSaaS with this, solo, using Claude Code

The codebase isn’t a tutorial scaffold. It’s the same approach that built a real, working MicroSaaS, solo. The product is the demo; the codebase you get is what built it.

  • Idempotent Stripe payment webhooks — the same event fires twice and the customer is still charged once
  • Atomic quota functions with pessimistic locking — the race where two requests spend the same last credit, closed
  • RLS on every table (per-user + service_role) — a user can’t read another’s rows even when a query is wrong; the database enforces it, not your app
  • Async pipeline with retries and prioritized queues — heavy jobs run off the request, and a failure retries instead of vanishing
  • Admin dashboard, built once and reused — funnel, errors and users in one place; the thing you always postpone, already there
CreatorCheck landing page, live in production
Analysis report flagging significant risks before publishing
Risk report detail: criteria identified and the next actions to fix
Analysis report with points of attention to fix
Attention report detail: criteria broken down with next actions
Analysis report clearing content that is ready to publish
A real CreatorCheck account with analysis history
Admin dashboard showing MRR, subscriptions and churn
Admin operations: success rate, latency and AI cost per analysis

CreatorCheck — live in production

This is CreatorCheck — a complete SaaS I built solo with this exact method and codebase. The codebase you get is what built it.

Built by one person, one clear idea, and Claude Code. Not a team, not a tutorial.

Everything you need to go from doc to deployed

01

The heart of the method

Pack of 11 Spec Templates

In Markdown, in English, ready to fill in. Each template ships with a worked example so you adapt it to your niche instead of starting from a blank page.

  • 01 · Business model
  • 02 · PRD (in scope / out of scope)
  • 03 · Database schema
  • 04 · CLAUDE.md (the agent’s persistent context)
  • 05 · System architecture
  • 06 · ADR (Architecture Decision Record)
  • 07 · Claude Code session prompt
  • 08 · Pre-session, pre-deploy and pre-launch checklists
  • 09 · Design System
  • 10 · Testing strategy
  • 11 · Events & Analytics
02 · PRD1 / 5
02-prd.md
# PRD: [your product]

## 1. MVP objective
The smallest product that validates the
core hypothesis — in one sentence: [FILL IN]

## 2. MVP features
> Definition of done = observable behavior,
> not a technical task.

Feature 1: [FILL IN]
Definition of done:
- [ ] [FILL IN: observable behavior]

## 3. Out of scope for the MVP
> List what's NOT in now — and for each,
> say WHY. Stops the agent from suggesting
> it in a future session.
- [FILL IN: features left for later]
03-database-schema.md
# Database Schema: [your product]

> Plain language first, SQL second — the
> source of truth Claude Code rereads to
> regenerate SQL, migrations and types.

## Table: profiles
| field       | type    | notes         |
|-------------|---------|---------------|
| id          | UUID    | FK auth.users |
| plan        | enum    | free · pro    |
| quota_used  | integer | this cycle    |
| quota_limit | integer | plan limit    |

Who writes: only the server — never the
user. Plan and quota move via the webhook.
CLAUDE.md
# CLAUDE.md — the agent's context

## Stack (never swap without an ADR)
Next.js · Supabase · Stripe · Inngest

## Hard rules (read every session)
1. No code without a spec in /specs
2. Plan is always read from the DB
3. Quota is debited only after success
4. Every Route Handler validates (Zod)

## Where things live
/specs · the contracts
/docs  · the ADRs
lib/   · the engine
__tests__/ · the rules above
ADR-001.md
# ADR-001: [the decision title]

**Date:** YYYY-MM-DD
**Status:** accepted

## Context
What problem was solved? What made it
hard? Which pressures were at play?

## Decision
One sentence, present tense.
"We use X for Y."

## Alternatives considered
What else was evaluated — and why
each was rejected.

## Consequences
What changes; which trade-offs we
accepted — good effects and bad.
10-tests.md
# Testing Policy: [your product]

> Without this, each session decides on
> the fly. Coverage becomes random.

## What ALWAYS has a test
- Quota rules: reserve, refund, races
- Upload checks: size, MIME, magic bytes
- Route Handler body: Zod + the 400 path
- Price/discount calc, including edges

## What does NOT need a test
- Components that only assemble others
- Visual styles (hover, animation)
- Third-party integrations (real env)
02

The practical playbook

The "From Doc to Deployed" Guide

In English, no fluff. It explains how each template connects to the method and how to run your Claude Code sessions from the first context to deploy.

  • Why coherence breaks on session 3 (and how to fix it)
  • The "document before you code" method, explained
  • How to structure Phase 0 / 1 / 2 in every session
  • A full walkthrough of the 11 templates
  • Your first week: a day-by-day plan
The table of contents of the "From Doc to Deployed" guide
03

The method in action

Spec-Driven Workflow for Claude Code

Most devs hear "spec-driven development" but never actually run it. They don’t know where to start. This is the hands-on training that takes you from zero to a feature you’ve specced, planned, and shipped. It’s built on an open-source spec-driven foundation, with the integration and training that make it production-ready: how the workflow lives alongside your CLAUDE.md, and which ritual to reach for, when. This is the "doc to deployed" method made operational. It’s the ritual the whole kit runs on.

  • Hands-on training: go from zero to a shipped feature, step by step
  • A worked exercise (a real feature) you build alongside the guide
  • Slash commands for the full spec → plan → tasks → implement ritual
  • The bridge: how the workflow coexists with your method, no rule drift
  • A decision table: which ritual to use, when
  • Worked example cases you adapt instead of starting blank
terminal
$ /speckit.specify "receive webhooks from a payment gateway and apply the effect exactly once even with retries"

✓ Created specs/004-exactly-once-webhooks/spec.md
✓ Goal, scope, edge cases, acceptance criteria
→ Next: /speckit.plan
04

A head start, not a cage

Complete Production Codebase

A full stack ready to run in production: Next.js + Supabase + Upstash Redis + Inngest + Resend + Stripe, hosted on Vercel. Auth, plans, payments, cache, async queue and admin already implemented.

  • Complete auth: email + password, magic link, password recovery, email confirmation
  • Full Google OAuth sign-in flow implemented end to end (not just a button) — tokens encrypted at rest
  • Plans and quotas system (adapt to your model)
  • Direct-to-storage uploads (no 4.5 MB limit)
  • Async pipeline via Inngest
  • Idempotent payment webhooks (Stripe)
  • Transactional email via Resend
  • Admin dashboard with metrics
  • 138 versioned migrations with RLS and idempotent webhooks
  • 2,193 passing tests across 218 suites
  • Step-by-step setup README in English
project structure
the-codebase/
  app/
    (auth)/          # sign-in · recovery
    (onboarding)/    # guided first run
    admin/           # metrics dashboard
    api/             # routes + webhooks
    checkout/        # Stripe checkout
    app/             # the product itself
  components/        # ui · admin · checkout
  lib/
    oauth/           # Google + tokens
    payment/         # idempotent webhooks
    inngest/         # async pipeline
    supabase/        # clients, RLS-first
    upstash/         # rate limit + cache
    email/           # transactional
  supabase/
    migrations/      # versioned, RLS
  __tests__/         # unit + integration

What’s already built into the codebase

You don’t rebuild the infrastructure. You plug your niche’s logic on top of what’s already running in production.

schema.sql
-- RLS: users see only their own rows
create policy "own_rows" on public.reports
  for select using (auth.uid() = user_id);

-- atomic quota check (pessimistic lock)
select * from quotas where user_id = $1 for update;

Authentication

  • Email + password login
  • Magic link (passwordless)
  • Google OAuth — full sign-in flow, end to end
  • Password recovery
  • Email confirmation

Payments

  • Stripe integration (recurring subscriptions, webhook-driven)
  • Idempotent webhooks with a unique external key (zero double-charge risk)
  • Plans and quotas with atomic functions
  • Full audit trail of plan changes
  • User subscription panel

Database & Schema

  • 138 versioned migrations, ready to run via Supabase CLI
  • RLS on every table (per-user + service_role policies)
  • Atomic quota functions with FOR UPDATE (pessimistic locking)
  • pg_cron for periodic cleanup and daily materialized-view refresh

Processing

  • Async pipeline via Inngest with pessimistic locking
  • Direct-to-storage uploads (no 4.5 MB limit)
  • Automatic retry on failure + prioritized queues
  • Realtime UI while the worker processes in the background
  • Cache invalidated by data change and by deploy version

Communication

  • Transactional email via Resend
  • Responsive HTML templates
  • Newsletter lifecycle (welcome, D+3, D+7, weekly recap)

Admin & Metrics

  • Dashboard with KPIs per plan
  • 30-day materialized funnel (signup → confirmed → onboarded → activated → paying)
  • Live pipeline + last-24h errors grouped by type
  • User management + audit logs
  • Meta CAPI (server-side conversions) + GA4 server events
  • Daily Meta Ads spend synced into the admin funnel
  • Daily refresh via pg_cron

Growth & Retention

  • Inline feedback widget with unread badge
  • NPS modal with 90-day cooldown per trigger event
  • Automated blog (Inngest worker on a cron)
  • 20-slide educational onboarding that resumes where the user left off
  • AI Q&A assistant with per-plan quota

Community

  • Full discussion community: spaces, posts, threaded replies
  • Reactions, @mentions and a notification center (in-app + aggregated email digests)
  • AI content classifier with a failsafe, plus a report → appeal moderation flow
  • Admin moderation: pin, restore, restrict — every action audited

Content engine

  • Automated blog: topic queue, AI-written drafts, hero images generated on the fly
  • SEO built in: RSS, sitemap, schema.org, IndexNow ping on publish
  • Comments + engagement tracking, with an emergency-pause kill-switch

Third-party integrations

  • Third-party OAuth integrations with a CSRF-protected state handshake
  • Full token lifecycle — encrypted at rest, auto-refresh, revoke & disconnect

Launch & feature flags

  • Feature-flag system to gate features per environment or rollout
  • Pre-launch "closed" mode with waitlist capture
  • Emergency-pause kill-switches for risky subsystems

Privacy & consent

  • Cookie consent banner that blocks tracking pixels until opt-in
  • OAuth tokens encrypted at rest (AES-256-GCM)
  • Versioned terms/privacy with an automatic re-acceptance modal
  • Self-serve account deletion with a full audit log

Infrastructure

  • Automatic deploy on Vercel
  • Cache + rate-limit via Upstash Redis
  • Runs on free tier (Vercel + Supabase + Upstash)

Tests & quality

  • 2,193 tests across 218 suites — all green
  • Type-check, lint and tests run before every “done”
  • Coverage focused on the hard rules (quotas, payments, validation)

Built for you to extend

  • A CLAUDE.md pre-structured with the method’s rules — fill in your project’s specifics and the agent has context from session 1
  • README in English (from clone to first deploy)
  • .env.example with comments (every API key explained)
  • Strict TypeScript
  • Zod validation (forms and APIs checked automatically)

The Technical Founder Kit is for you if...

It is for you

  • You already build with Claude Code (or Cursor/Cline) and keep losing the thread between sessions
  • You’re an engineer with a side project that stalled, not from lack of skill but from drift
  • You know what to build — the agent just keeps drifting
  • You’d trade ten AI tips for one shipped product
  • You want a method that holds, not another boilerplate to wire up from zero
  • You’d rather pay once than subscribe to one more course

It is not for you

  • You want a 10-week video course with a fixed syllabus
  • You want 1:1 mentoring or ongoing dev support
  • You expect a one-click install — no config, no terminal, no README
  • You expect a magic prompt to one-shot the whole app
  • You want the agent to decide what to build — not just how
  • You’d rather collect more AI tips than ship one real thing

Build the right thing — and sell it

You were never going to fail for lack of building skill. You’d fail by building something — cleanly, on time — that nobody pays for. The kit gets you shipping coherently. These two make sure it’s the right thing, and that you can actually sell it.

BONUS · BEFORE YOU BUILD

Niche Selection for Engineers

You can build anything. That’s exactly why you keep building the wrong thing. A filter (not a brainstorm) to pick a niche that pays instead of shipping tech nobody asked for.

  • The 5 traps that catch engineers specifically
  • A 4-question test: is this a niche, or just a project?
  • The 10-conversation validation gate (with a kill criterion)
  • Where your technical edge is a moat, and where it’s worthless
  • A one-page decision sheet to run before you open your editor
A founder filtering many ideas through a funnel down to one validated niche
BONUS · LEARN FROM REAL ONES

8 MicroSaaS Teardowns

Real solo products, real founder-reported numbers, read like a code review, not a motivation reel. What the actual technical core was, what was trivial to build yet printed money, and how they got their first users.

  • 8 real products: PhotoAI, ShipFast, TypingMind & more
  • The stack, the monetization, the first-users channel
  • The pattern that repeats across all 8
  • Why "the building was the easy part," every time
A person studying several MicroSaaS products in exploded teardown view, like a code review

What it’s worth

Paid boilerplates like ShipFast sell for a few hundred dollars, and that’s for the starter code alone. This kit includes a comparable production codebase, plus the method and the 11 templates that tell the agent what to build.

Everything in the kit, if you sourced it separately:

  • The "From Doc to Deployed" Guide$39
  • Pack of 11 Spec Templates (English)$49
  • Spec-Driven Workflow for Claude Code$39
  • Complete Production CodebaseNext.js + Supabase + Auth + Payments + Admin + Queue, plus a versioned SQL schema (138 migrations, RLS, idempotent webhooks)$199
  • Step-by-step Setup README$19
Bought separately$345
In the kit$49

Also included, free:

  • Niche Selection for Engineers
  • 8 MicroSaaS Teardowns
Launch offer

The Technical Founder Kit

Launch price: $49 through June 16, 2026. From June 17, 2026, the kit goes to $79.

$49 one-time

lifetime access, no subscription

Full price $79

after the launch window

GET THE SYSTEM

Built with the exact method I used to ship a working MicroSaaS, solo, with Claude Code. The product is the proof.

  • Instant access after payment
  • 7-day no-questions-asked refund
  • Secure one-time checkout
  • Everything downloadable (Markdown and source code)

You’ll get The Technical Founder Kit in your inbox right away

Instant delivery by email

The moment payment clears, you get the access link. Card payments clear instantly.

No account, no login

You download everything in a single archive. Templates and code live on your machine, ready to use. Nothing locked into a platform.

7-day no-questions-asked refund

Buy it, use all of it, and if it’s not worth it, email us within 7 days for a full refund. No form, no justification.

Be honest with yourself.

Look at your machine and count the projects you started and parked.

How many stalled because the Claude Code session fell apart halfway and the code never came together?

How many you could have unstuck — but the thought of weeks wiring up login, payments and an admin from scratch made you put it off?

And how many could you have shipped in a weekend — if you’d only been sure anyone would pay for them?

If you counted more than one parked project, you already know the problem. And you know that trying again the same way gets the same result.

What you walk away with:

  • The method
  • 11 spec templates
  • Spec-Driven Workflow
  • Production codebase
  • 2 bonuses
$49one-time · lifetime access

The loop breaks this week.

Who built this method (and the SaaS that proved it)

Photo of Eduardo Mendes, author of The Technical Founder Kit

Eduardo Mendes

Full-stack developer and SDET, 18 years at a major national bank, technical lead on Gamification · founder of Growth Digital

I’m a full-stack developer and SDET (Software Development Engineer in Test) with 18 years at a major national bank, where I’m technical lead on Gamification. On the side I run a studio building niche SaaS.

I built a real, working MicroSaaS with this method, solo, using Claude Code. The product is the proof, and I didn’t hire a single developer. These templates are the actual documents I filled in before writing a line of code.

The method isn’t theory. It’s what worked when it was just me, one clear idea, and Claude Code. Everything here was tested, broken, fixed, and documented across months of sessions.

Start this week, not next quarter.

You leave this page with everything you need to start. The agent stops drifting on session 3, because now it has the context it kept inferring wrong.

  • The method
  • 11 spec templates
  • Spec-Driven Workflow
  • Production codebase

Everything you get

  • 11 spec templates in Markdown
  • The "From Doc to Deployed" guide
  • Spec-Driven Workflow for Claude Code, with hands-on training
  • Complete production codebase (Next.js + Supabase + Upstash + Inngest + Resend + Stripe + Vercel)
  • Step-by-step setup README
  • Bonus: Niche Selection for Engineers
  • Bonus: 8 MicroSaaS Teardowns
  • Lifetime access, one-time payment
Launch offer

The Technical Founder Kit

Launch price: $49 through June 16, 2026. From June 17, 2026, the kit goes to $79.

$49 one-time

lifetime access, no subscription

Full price $79

after the launch window

GET THE SYSTEM

Built with the exact method I used to ship a working MicroSaaS, solo, with Claude Code. The product is the proof.

  • Instant access after payment
  • 7-day no-questions-asked refund
  • Secure one-time checkout
  • Everything downloadable (Markdown and source code)

Frequently asked questions

The codebase is Next.js + Supabase + Stripe on Vercel. The method (specs, persistent context, session ritual) is stack-agnostic. Use it with any stack. The codebase is a head start, not a cage.

It’s the same foundation that runs a real, working MicroSaaS I built solo: idempotent payment webhooks, atomic quota functions, RLS on every table, async pipeline, admin dashboard.

Yes. The method is about giving any AI agent persistent context. The session ritual and the spec templates work regardless of the tool.

One-time. Lifetime access to all material. The only recurring cost is your own Claude/Cursor plan.

7-day no-questions-asked refund. Buy it, use it, and if it’s not worth it, email us within 7 days.

You need to be comfortable in a terminal, setting env vars, and reading a README — basic engineering fluency. Not a senior architect. If you’ve shipped anything with Next.js or a similar stack, you’re fine. This is for people who already code.

It’s designed to run on free tiers (Vercel + Supabase + Upstash) until you have real usage, so your early costs are near zero. You pay as you grow, not before.

That depends on you, but the codebase removes the weeks you’d otherwise spend wiring auth, payments and an admin from scratch. Much of the setup is env vars and following the README.

Email support for questions about the templates, the codebase and the method. Not 1:1 mentoring or a review of your specific project. For day-to-day questions while you build, the best tool is Claude Code itself, running in your repo.

Instantly, by email. The moment payment clears you get a link to download everything in a single archive. No account, no login, nothing locked to a platform.

The Technical Founder Kit

From Doc to Deployed

Questions, refunds or support: support@specfounder.com

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This kit is an educational product. It does not include 1:1 mentoring, development support or any guarantee of results. The codebase is a starting point; the outcome depends on each buyer’s effort and niche.

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