The Blank Page Problem
Every engineer knows the feeling: new project, new spec, blank document. You spend the first 2-4 hours just figuring out structure before writing a single word of substance.
- What sections do I need?
- What questions will reviewers ask?
- Where do the diagrams go?
- How do I document NFRs with actual measurable targets?
- What does a "complete" threat model look like?
You end up copying from the last spec you wrote (which was missing half the sections), or worse - you skip sections entirely and get called out in review.
The Solution: A Template Pack Built from Production Systems
I've spent the last 5 years writing specs for systems processing $1B+/year in payments (PCI DSS Level 1, SOC 2, GDPR). The templates in this pack aren't theoretical - they're extracted from actual production documents that passed audits, scaled to 10K TPS, and survived Black Friday traffic.
12 templates. 62 hours saved per project. 300+ QA checklist items.
What's in the Pack
12 Core Templates (Markdown + Mermaid)
| # | Template | Category | Hours Saved |
|---|---|---|---|
| 01 | Technical Specification | General | 8 |
| 02 | API Specification | API | 4 |
| 03 | Database Schema | Data | 6 |
| 04 | Infrastructure & Deployment | Infra | 6 |
| 05 | Feature Specification | Product | 4 |
| 06 | System Design Document | Architecture | 10 |
| 07 | Architecture Decision Record (ADR) | Architecture | 1 |
| 08 | Data Pipeline Specification | Data | 6 |
| 09 | Threat Model (STRIDE) | Security | 4 |
| 10 | Migration Plan | Operations | 8 |
| 11 | API Contract Testing | Testing | 3 |
| 12 | Master Blank Template | General | 2 |
2 Real-World Filled Examples
Not toy examples. Complete specs from a production payment platform:
Payment Service Technical Spec - Full spec with architecture diagrams, data models, API contracts, NFRs with measurable targets (p99 < 500ms, 99.99% availability), threat model summary, observability stack, testing strategy, canary rollout plan, runbooks, and decision log.
Payments API v2 Specification - Production-ready API spec with all endpoints (payments, captures, refunds, payment methods, webhooks), data models, cursor pagination, filtering/sorting, error codes with decline codes, webhook delivery guarantees, SDKs, and changelog.
TEMPLATE_CHEATSHEET.md - Your Quick-Reference Brain
- Template Picker: "If you're doing X, use template Y"
- Quick-Start Checklists per template (tick every box before review)
- Evidence Cheatsheet: What counts as "done" for each section
- Mermaid Snippet Library: 5 copy-paste patterns (C4, ERD, Sequence, Flow)
- Notion CSV Column Maps: Exact schemas for import
- Value Calculator: ROI table (129x-387x at consulting rates)
Notion Import Pack (4 CSVs)
Instantly build a searchable template library in Notion:
| CSV | Rows | Purpose |
|---|---|---|
| templates.csv | 12 | Template catalog |
| sections.csv | 80 | Sections per template with required/optional |
| checklists.csv | 300+ | Granular QA gates per section |
| examples.csv | 24 | Real example links |
Import - relate databases - add rollups - done.
Why These Templates Work
1. Every Section Has Acceptance Criteria
Reviewers don't guess. They check:
### 3. Non-Functional Requirements
| Category | Requirement | Metric | Target | Verification |
|----------|-------------|--------|--------|--------------|
| Performance | Authorization latency | p99 | < 500ms | k6 load test |
| Availability | Uptime | nines | 99.99% | SLO dashboard |
2. Mermaid Diagrams Built In
No draw.io/Lucidchart context switching. Diagrams render in GitHub, Notion, Obsidian, VS Code:
C4Container
title Payment Service
Container(api, "API", "Go", "REST/gRPC")
ContainerDb(redis, "Redis", "Cluster", "Idempotency keys")
ContainerDb(pg, "PostgreSQL", "15", "Payments, audit log")
Rel(api, redis, "SETNX", "Idempotency check")
Rel(api, pg, "SQL", "Persist payment")
3. 300+ QA Gates Importable to Any Tool
checklists.csv has granular items like:
| Template | Section | Item | Type |
|---|---|---|---|
| 01-technical-spec | 3 | Each NFR has measurable target | required |
| 01-technical-spec | 3 | Performance: latency percentile | required |
Get It
GitHub: https://github.com/Kiendas25/tech-spec-template-pack
Gumroad: https://contentwave2.gumroad.com/l/eqxdya ($24)
License: MIT - use commercially, modify, distribute.
Built for engineers who write specs. Tips welcome via USDC (Solana): 49NHJ5aUPpVwjMrHzgJt7pcYPCi7cxHUXVoEhgBPrAgE
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