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Codebase Analysis Skill · aiskillstore | DecimalAI

code reviewby aiskillstore

Codebase Analysis Skill

aiskillstore/codebase-analysis

Source aiskillstore/marketplace ↗License Not recorded

Systematically analyze codebase structure, complexity, dependencies, and architectural patterns to understand project organization

SkillScore68Maintained

Automatic

Coding packanalysiscode-qualityarchitecture

Last verified 9/2/2026

What it changes

Passed 14 of 21 test cases with the skill, and 11 of 21 without it.

Without skill50%

With skill68%

Checks it passed that the model alone missed

The response lists Phase 1 as Structure Discovery.
The response constrains the grep search using --include="*.cs".
The response includes determining existing domain entities and their relationships.

and 3 more in the full report

4 fixed11 passed either way7 still failing0 broke

Pass-rate lift: +18 pp
Tokens: +46%
Agent turns: 0%
Response time: +12%

Model gemini-3.6-flashMeasured 9/2/2026v315 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/aiskillstore-codebase-analysis/SKILL.md https://app.decimal.ai/s/aiskillstore-codebase-analysis/SKILL.md

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

decimalai skills add aiskillstore-codebase-analysis

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

curl -fsSL --create-dirs -o .claude/skills/aiskillstore-codebase-analysis/SKILL.md https://app.decimal.ai/s/aiskillstore-codebase-analysis/SKILL.md

Raw file: /s/aiskillstore-codebase-analysis/SKILL.md ↗ · machine-readable summary at /s/aiskillstore-codebase-analysis.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 4 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 4

Prompt

How can I scan a .NET backend repository for built-in validation attributes like Required, Range, and StringLength using standard command-line tools without picking up unrelated text files?

What was checked, without and with the skill
Checked	Without skill	With skill
The response includes a grep command searching for .NET DataAnnotations validation attributes.	Passed	Passed
The response constrains the grep search using --include="*.cs".	Missed	Passed

case-07 · gemini-3.6-flash · 9/2/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md266 linessingle file

Codebase Analysis Skill

Overview

This skill provides techniques for extracting business requirements, domain knowledge, and technical specifications from existing codebases.

Analysis Objectives

When analyzing a codebase, seek to understand:

Domain Model: Core entities and their relationships
Business Rules: Validation, calculations, workflows
Integrations: External systems and data flows
User Capabilities: What users can do in the system
Technical Constraints: Architecture patterns and limitations

Analysis Process

Phase 1: Structure Discovery

Map project structure and organization
Identify main components and layers
Locate configuration and entry points
Understand build and deployment setup

Phase 2: Domain Model Extraction

Find entity/model definitions
Map relationships between entities
Identify domain vocabulary (ubiquitous language)
Document data types and constraints

Phase 3: Business Logic Identification

Locate service/business logic layers
Extract validation rules
Document calculations and formulas
Map state machines and workflows

Phase 4: Integration Mapping

Find API endpoints and contracts
Identify external service calls
Map data flows in/out of system
Document authentication patterns

Track record

Benchmark

14 / 21

test cases passed, vs 11 / 21 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 v5 — 8/26/2026

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

aiskillstore / marketplace

skills/atman36/codebase-analysis/SKILL.md

View on GitHub ↗

Imported 8/26/2026Version v3

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See it in action

What's inside

Codebase Analysis Skill

Overview

Analysis Objectives

Analysis Process

Phase 1: Structure Discovery

Phase 2: Domain Model Extraction

Phase 3: Business Logic Identification

Phase 4: Integration Mapping

Track record

Benchmark

Adoption

SkillSafety

Source

Other skills for the same job

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