fsd-writer

Convert rough project descriptions into structured Functional Specification Documents.

161|53|Updated Jan 28, 2026

Search Tags:#documentation #markdown #requirements #evolution #traceability #functional specification #fsd

Ready to run

npx skills add https://github.com/SensorsIot/Universal-ESP32-Workbench --skill fsd-writer

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: fsd-writer
Source: https://github.com/SensorsIot/Universal-ESP32-Workbench/tree/main/.claude/skills/fsd-writer
Command: npx skills add https://github.com/SensorsIot/Universal-ESP32-Workbench --skill fsd-writer

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Converts rough project descriptions into structured Functional Specification Documents (FSDs), enabling clear requirements, traceability, and staged development.

Core Features & Use Cases

Initial FSD generation from rough descriptions for new projects.
Delta-based evolution to update existing FSDs with new requirements.
Automated risk, assumptions, and dependency capture; deterministic, agent-consumable Markdown outputs.
Works across domains (embedded, IoT, backend, mobile, SDR, energy systems, hybrid hardware/software).

Quick Start

Provide a rough project description to /fsd-writer to generate an initial FSD.

Frequently Asked Questions about fsd-writer

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I generate a functional specification document from rough project ideas?▼

To generate a functional specification document from rough ideas, provide your initial project description to the agent, which converts it into a structured Markdown FSD covering functional and non-functional requirements, phases, and verification.

Can I update an existing functional specification document with new requirements?▼

You can update an existing functional specification document using delta-based evolution, which allows you to integrate new requirements into your current FSD while maintaining traceability across the project lifecycle.

How do I capture risks and dependencies when writing requirements for IoT projects?▼

Capturing risks and dependencies for IoT projects is handled automatically during FSD generation, ensuring your structured requirements include comprehensive risk, assumption, and dependency tracking for hybrid hardware and software systems.

Does this tool work for embedded systems and energy systems documentation?▼

This tool works for embedded systems and energy systems documentation, applying domain-specific logic to generate structured functional specifications across IoT, backend, mobile, SDR, and hybrid hardware/software environments.

What is the best way to ensure traceability in a functional specification document?▼

The best way to ensure traceability in a functional specification document is to use deterministic Markdown generation, which structures your requirements, phases, and verification criteria into an agent-consumable format with built-in evolution tracking.

Why does my FSD need both functional and non-functional requirements?▼

Your FSD needs both functional and non-functional requirements to create a buildable specification, ensuring that project capabilities, performance constraints, risks, and verification criteria are fully defined for staged development.