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Personal Tool Builder · dokhacgiakhoa | DecimalAI

codingby dokhacgiakhoa

Personal Tool Builder

dokhacgiakhoa/personal-tool-builder

Source dokhacgiakhoa/agent-skills-4-vibe-coding-cli ↗License NOASSERTION

Expert in building custom tools that solve your own problems first. The best products often start as personal tools - scratch your own itch, build for yourself, then discover others have the same itch. Covers rapid prototyping, local-first apps, CLI tools, scripts that grow into products, and the art of dogfooding.

SkillScore100Maintained

Automatic

Coding pack

Last verified 8/29/2026

What it changes

Passed 23 of 23 test cases with the skill, and 21 of 23 without it.

Without skill91%

With skill100%

Checks it passed that the model alone missed

recommend building the core functional script before adding UI styling
advise dogfooding the tool in daily personal usage before adding features

2 fixed21 passed either way0 still failing0 broke

Pass-rate lift: +9 pp
Tokens: +16%
Agent turns: 0%
Response time: -5%

Model gemini-3.6-flashMeasured 8/29/2026v123 of 23 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/dokhacgiakhoa-personal-tool-builder/SKILL.md https://app.decimal.ai/s/dokhacgiakhoa-personal-tool-builder/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add dokhacgiakhoa-personal-tool-builder, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/dokhacgiakhoa-personal-tool-builder/ and pins it in .decimal/skills.lock

decimalai skills add dokhacgiakhoa-personal-tool-builder

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/dokhacgiakhoa-personal-tool-builder/SKILL.md https://app.decimal.ai/s/dokhacgiakhoa-personal-tool-builder/SKILL.md

Raw file: /s/dokhacgiakhoa-personal-tool-builder/SKILL.md ↗ · machine-readable summary at /s/dokhacgiakhoa-personal-tool-builder.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 2 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 2

Prompt

I have an idea for a simple CLI tool to parse local log files. Before writing any log parsing logic, I want to spend a week creating a full interactive terminal UI with custom color themes, ASCII banners, and animated welcome screens. How should I approach prototyping this tool?

What was checked, without and with the skill
Checked	Without skill	With skill
recommend building the core functional script before adding UI styling	Missed	Passed

case-06 · gemini-3.6-flash · 8/29/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md41 linessingle file

Personal Tool Builder

Role: Personal Tool Architect

You believe the best tools come from real problems. You've built dozens of personal tools - some stayed personal, others became products used by thousands. You know that building for yourself means you have perfect product-market fit with at least one user. You build fast, iterate constantly, and only polish what proves useful.

Capabilities

Personal productivity tools
Scratch-your-own-itch methodology
Rapid prototyping for personal use
CLI tool development
Local-first applications
Script-to-product evolution
Dogfooding practices
Personal automation

Patterns

🧠 Knowledge Modules (Fractal Skills)

1. Scratch Your Own Itch

2. Identifying Real Itches

3. The 10-Minute Test

4. Start Ugly

5. CLI Tool Architecture

6. Node.js CLI Stack

7. Python CLI Stack

8. Distribution

9. Local-First Apps

10. Why Local-First for Personal Tools

11. Stack Options

12. Simple Local Storage

13. SQLite for More Complex Tools

14. ❌ Building for Imaginary Users

15. ❌ Over-Engineering Personal Tools

Track record

Benchmark

23 / 23

test cases passed, vs 21 / 23 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/10/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

dokhacgiakhoa / agent-skills-4-vibe-coding-cli

.agent/skills/personal-tool-builder/SKILL.md

View on GitHub ↗

License NOASSERTIONImported 8/10/2026Version v1

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Ready to supercharge your AI agents?

See it in action

What's inside

Personal Tool Builder

Capabilities

Patterns

🧠 Knowledge Modules (Fractal Skills)

1. Scratch Your Own Itch

2. Identifying Real Itches

3. The 10-Minute Test

4. Start Ugly

5. CLI Tool Architecture

6. Node.js CLI Stack

7. Python CLI Stack

8. Distribution

9. Local-First Apps

10. Why Local-First for Personal Tools

11. Stack Options

12. Simple Local Storage

13. SQLite for More Complex Tools

14. ❌ Building for Imaginary Users

15. ❌ Over-Engineering Personal Tools

Track record

Benchmark

Adoption

SkillSafety

Source

Other skills for the same job

Related skills