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npm-namer · zrosenbauer | DecimalAI

codingby zrosenbauer

npm-namer

zrosenbauer/npm-namer

Source zrosenbauer/skills ↗License MIT

This skill should be used when the user wants to find an available npm package name, check whether one or more names are taken on the npm registry, brainstorm name ideas for a package, or pre-flight a name against the moniker (similar-name) collision rule before publishing. Common triggers include "find me an npm name for", "is <name> available on npm", "check if these package names are taken", "brainstorm a name for my package", "help me name this npm package", and "will <name> hit moniker coll

SkillScore73Maintained

Automatic

Coding pack

Last verified 8/4/2026

What it changes

Passed 12 of 17 test cases with the skill, and 5 of 17 without it.

Without skill32%

With skill73%

Checks it passed that the model alone missed

The CLI command includes --limit 200 when invoking check.mjs.
The CLI command includes --scope @acme when calling check.mjs.
The CLI command includes --near-distance 3 when running check.mjs.

and 9 more in the full report

12 fixed4 passed either way3 still failing3 broke

Pass-rate lift: +41 pp
Tokens: +139%
Agent turns: 0%
Response time: -58%

Model gemini-3.6-flashMeasured 8/4/2026v116 of 22 cases passed with skill · 17 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/zrosenbauer-npm-namer/SKILL.md https://app.decimal.ai/s/zrosenbauer-npm-namer/SKILL.md

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

decimalai skills add zrosenbauer-npm-namer

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

curl -fsSL --create-dirs -o .claude/skills/zrosenbauer-npm-namer/SKILL.md https://app.decimal.ai/s/zrosenbauer-npm-namer/SKILL.md

Raw file: /s/zrosenbauer-npm-namer/SKILL.md ↗ · machine-readable summary at /s/zrosenbauer-npm-namer.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 12 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 12

Prompt

I want to search for available package names under my npm org scope @acme using the seed terms build and bundle. What option specifies the scope when executing candidate check scripts?

What was checked, without and with the skill
Checked	Without skill	With skill
The CLI command includes --scope @acme when calling check.mjs.	Missed	Passed

case-04 · gemini-3.6-flash · 8/4/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md188 lines2 files

npm-namer

Finds available npm package names. Bundles a Node script (scripts/npm-namer/dist/check.mjs) that runs four layers of check:

Syntactic validation — thin wrapper over the official validate-npm-package-name package (uppercase, leading char, length, URL-safe, core-module shadow, etc.)
Availability — parallel HEAD requests to registry.npmjs.org for each candidate
Moniker collision — npm's publish-time rule (lowercase + strip .-_); catches estoolkit colliding with es-toolkit
Near-match (typosquat) warning — Damerau-Levenshtein distance against the top ~15,000 most-downloaded npm packages (TypoGard's published threshold, sourced from nice-registry/download-counts); catches extoolkit as suspiciously close to es-toolkit even though it would publish fine per the moniker rule

The full rule set the script encodes is in references/moniker-rules.md — load that when the user asks why a name fails.

Inputs

$ARGUMENTS — one of:

Seeds + concept: "i want a tiny logging lib. seeds: tinylog, microlog, jslog" → permute + check
Concept only: "name a cli that queries bigquery in the terminal" → brainstorm seeds, then permute + check
Pre-checked list: "are these taken? a, b, c, d" → batch check only, no brainstorming
Empty → ask what kind of package needs naming

Workflow

1. Classify the request

Signal in the prompt	Mode
User gave explicit seed words or candidates	find (permute the given seeds)
User described a concept but listed no names	brainstorm-then-find (you generate seeds, then permute)
User listed names asking "which are taken?"	check (batch check only, skip permutation)

If unclear, ask once with concrete options. Default to brainstorm-then-find when the user describes a package concept.

2. Brainstorm seeds (only in brainstorm-then-find mode)

Generate 10–20 candidate seed words that capture the concept's essence. Mix:

Direct nouns from the concept ("log", "bigquery", "query")
Metaphors ("forge", "sage", "smith", "lens")
Compact forms ("bq", "sql", "log")
Verbs that describe what the tool does ("scout", "probe", "ping")

Track record

Benchmark

12 / 17

test cases passed, vs 5 / 17 without

Adoption

Users: 1
Times used: 13

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/1/2026

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

zrosenbauer / skills

skills/npm-namer/SKILL.md

View on GitHub ↗

License MITImported 8/1/2026Version v1Bundled 1 file

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

npm-namer

Inputs

Workflow

1. Classify the request

2. Brainstorm seeds (only in brainstorm-then-find mode)

Track record

Benchmark

Adoption

SkillSafety

Source

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