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Cartographer · bilal140202 | DecimalAI

documentationby bilal140202

Cartographer

bilal140202/cartographer

Source bilal140202/the-lord-of-the-skills ↗License MIT

Maps and documents codebases of any size by orchestrating parallel subagents. Creates docs/CODEBASE_MAP.md with architecture, file purposes, dependencies, and navigation guides. Updates CLAUDE.md with a summary.

SkillScore72Maintained

Automatic

Coding pack

Last verified 8/8/2026

What it changes

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

Without skill60%

With skill72%

Checks it passed that the model alone missed

Includes last_mapped in the YAML frontmatter block.
Uses the --max-tokens flag to exclude massive individual files.
Runs scan-codebase.py to compare file counts when git is unavailable.

and 2 more in the full report

5 fixed13 passed either way5 still failing2 broke

Pass-rate lift: +12 pp
Tokens: +85%
Agent turns: 0%
Response time: -43%

Model gemini-3.6-flashMeasured 8/8/2026v118 of 25 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/bilal140202-cartographer/SKILL.md https://app.decimal.ai/s/bilal140202-cartographer/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add bilal140202-cartographer, 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/bilal140202-cartographer/ and pins it in .decimal/skills.lock

decimalai skills add bilal140202-cartographer

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

curl -fsSL --create-dirs -o .claude/skills/bilal140202-cartographer/SKILL.md https://app.decimal.ai/s/bilal140202-cartographer/SKILL.md

Raw file: /s/bilal140202-cartographer/SKILL.md ↗ · machine-readable summary at /s/bilal140202-cartographer.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 5 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 5

Prompt

If a codebase is too large even for multiple subagents due to massive individual source files, what scanner script parameter can be used to filter out huge files?

What was checked, without and with the skill
Checked	Without skill	With skill
Uses the --max-tokens flag to exclude massive individual files.	Missed	Passed

case-21 · gemini-3.6-flash · 8/8/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md304 linessingle file

Cartographer

Maps codebases of any size using parallel Sonnet subagents.

CRITICAL: Opus orchestrates, Sonnet reads. Never have Opus read codebase files directly. Always delegate file reading to Sonnet subagents - even for small codebases. Opus plans the work, spawns subagents, and synthesizes their reports.

Quick Start

Run the scanner script to get file tree with token counts
Analyze the scan output to plan subagent work assignments
Spawn Sonnet subagents in parallel to read and analyze file groups
Synthesize subagent reports into docs/CODEBASE_MAP.md
Update CLAUDE.md with summary pointing to the map

Workflow

Step 1: Check for Existing Map

First, check if docs/CODEBASE_MAP.md already exists:

If it exists:

Read the last_mapped timestamp from the map's frontmatter
Check for changes since last map:
- Run git log --oneline --since="<last_mapped>" if git available
- If no git, run the scanner and compare file counts/paths
If significant changes detected, proceed to update mode
If no changes, inform user the map is current

If it does not exist: Proceed to full mapping.

Step 2: Scan the Codebase

Run the scanner script to get an overview. Try these in order until one works:

# Option 1: UV (preferred - auto-installs tiktoken in isolated env)
uv run ${CLAUDE_PLUGIN_ROOT}/skills/cartographer/scripts/scan-codebase.py . --format json

# Option 2: Direct execution (requires tiktoken installed)
${CLAUDE_PLUGIN_ROOT}/skills/cartographer/scripts/scan-codebase.py . --format json

Track record

Benchmark

15 / 21

test cases passed, vs 13 / 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 v4 — 8/2/2026

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

bilal140202 / the-lord-of-the-skills

skills/gondor/claude-code/kingbootoshi__cartographer/SKILL.md

View on GitHub ↗

License MITImported 8/2/2026Version 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

Cartographer

Quick Start

Workflow

Step 1: Check for Existing Map

Step 2: Scan the Codebase

Track record

Benchmark

Adoption

SkillSafety

Source

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