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Squirrel — Full-Cycle Software Development Skill · sickn33 | DecimalAI

codingby sickn33

Squirrel — Full-Cycle Software Development Skill

sickn33/squirrel

Source sickn33/agentic-awesome-skills ↗License MIT

Full-cycle AI coding skill: plans, builds, tests, lints, fixes bugs, and writes production-grade docs. Auto-detects project state and adapts its 8-phase pipeline.

SkillScore73Maintained

Automatic

Coding pack

Last verified 8/11/2026

What it changes

Passed 15 of 21 test cases with the skill, and 13 of 21 without it.

Without skill64%

With skill73%

Checks it passed that the model alone missed

Audits existing source code first before planning improvements
Re-reads the surrounding source code and tries an alternative technical approach
Initiates the full eight-phase engineering process starting from initial discovery and planning

3 fixed13 passed either way5 still failing1 broke

Pass-rate lift: +9 pp
Tokens: +10%
Agent turns: 0%
Response time: -40%

Model gemini-3.6-flashMeasured 8/11/2026v116 of 22 cases passed with skill · 21 comparable

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/sickn33-squirrel/SKILL.md https://app.decimal.ai/s/sickn33-squirrel/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add sickn33-squirrel, 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/sickn33-squirrel/ and pins it in .decimal/skills.lock

decimalai skills add sickn33-squirrel

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

curl -fsSL --create-dirs -o .claude/skills/sickn33-squirrel/SKILL.md https://app.decimal.ai/s/sickn33-squirrel/SKILL.md

Raw file: /s/sickn33-squirrel/SKILL.md ↗ · machine-readable summary at /s/sickn33-squirrel.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 3 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 3

Prompt

The initial bug fix attempted in `src/utils/parser.ts` failed the test suite on the second build attempt. What action should be taken for this second strike?

What was checked, without and with the skill
Checked	Without skill	With skill
Re-reads the surrounding source code and tries an alternative technical approach	Missed	Passed

case-05 · gemini-3.6-flash · 8/11/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md102 linessingle file

Squirrel — Full-Cycle Software Development Skill

Overview

Squirrel is a full-cycle AI coding skill that works across 9 AI coding agents. It auto-detects project state (greenfield, in-progress, or mature) and adapts its 8-phase engineering pipeline accordingly. Instead of a one-size-fits-all workflow, it figures out where the project actually is and jumps in at exactly the right point.

When to Use This Skill

Use when starting a new project from scratch (greenfield)
Use when improving an existing codebase (in-progress or mature)
Use when fixing bugs, adding features, or refactoring
Use when adding tests, linting, or CI/CD to a project
Use when writing production-grade documentation
Use when the user says "build me", "fix this", "squirrel this project", or any multi-step development task

How It Works

Step 0: Detect Mode

Squirrel classifies the project directory:

Signal	Mode	Entry Point
Empty directory	Greenfield	All 8 phases from scratch
Source files, no tests/docs	In-Progress	Audit first, then improve
Source + tests + CI + README	Mature	Targeted improvements
"fix this bug / add feature"	Targeted	Scoped work only

The 8-Phase Pipeline

Discover — Understand the project (audit existing code or gather requirements)
Plan — Concrete task list with dependencies and done-criteria
Build — Write or modify code (parallel sub-agents when supported)
Test — Run existing tests, write new ones, 70%+ coverage target
Bug Hunt — Static analysis + manual review
Polish — Lint, format, type check, remove dead code
Document — README + inline docs (update existing, don't overwrite)
Ship — Final checklist: tests green, no secrets, CI configured

Failure Recovery (3-Strike Rule)

Track record

Benchmark

15 / 21

test cases passed, vs 13 / 21 without

Adoption

Users: 1
Times used: 134

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

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

sickn33 / agentic-awesome-skills

skills/squirrel/SKILL.md

View on GitHub ↗

License Apache-2.0Imported 8/3/2026Version v1

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

Squirrel — Full-Cycle Software Development Skill

Overview

When to Use This Skill

How It Works

Step 0: Detect Mode

The 8-Phase Pipeline

Failure Recovery (3-Strike Rule)

Track record

Benchmark

Adoption

SkillSafety

Source

Related skills