Is xan safe to install?

SaferSkills independently audited xan (Agent Skill) and scored it 100/100 (green). The audit ran 55 deterministic rules across Security, Supply Chain, Maintenance, Transparency, and Community; it found 0 high-severity and 0 lower-severity findings. The full rule-by-rule trace and per-finding evidence are below. Free, methodology-open.

CategoryWeightCategory scoreContribution

Securityprompt, exec, net, exfil, eval

35%

100

35.0 pts

Supply chainhash, typosquat, maintainer, lockfile

20%

100

20.0 pts

Maintenancestaleness, pinning, CI

15%

100

15.0 pts

TransparencySKILL.md, perms, README

15%

100

15.0 pts

Communityinstalls, verify, response

15%

100

15.0 pts

Findings & checks · 0 flagged

Securityscore 100 · 0 findings

✓—All security checks passedNo findings in this category for the latest scan.pass

Supply chainscore 100 · 0 findings

✓—All supply chain checks passedNo findings in this category for the latest scan.pass

Maintenancescore 100 · 0 findings

✓—All maintenance checks passedNo findings in this category for the latest scan.pass

Transparencyscore 100 · 0 findings

✓—All transparency checks passedNo findings in this category for the latest scan.pass

Communityscore 100 · 0 findings

✓—All community checks passedNo findings in this category for the latest scan.pass

The primary manifest — the file an agent reads to learn what this artifact does.

bundled/skills/xan/SKILL.md · 1 file

bundled/skills/xan/SKILL.md1.2 KB · Markdown

name: xan

description: High-performance CSV processing with xan CLI for large tabular datasets, streaming transformations, and low-memory pipelines.

xan

Use this skill when tabular work involves large CSV-like files and shell-oriented data pipelines.

When to Use

CSV/TSV files are large (size or rows) and Python/pandas style processing is too heavy.
You need fast CLI operations such as filter, sort, dedup, groupby, frequency, join.
You want low-memory streaming workflows in terminal pipelines.

Boundaries

Not for workbook semantics (.xlsx formula/layout preservation) — use xlsx or excel-analysis.
Not for ML model training pipelines — use data-ml skills.
This skill is a thin CLI wrapper; it does not implement custom parsing logic itself.

Script

Path: scripts/xan.ps1

Examples

powershell -ExecutionPolicy Bypass -File "$env:USERPROFILE\.codex\skills\xan\scripts\xan.ps1" count data.csv
powershell -ExecutionPolicy Bypass -File "$env:USERPROFILE\.codex\skills\xan\scripts\xan.ps1" filter "score > 0.8" data.csv
powershell -ExecutionPolicy Bypass -File "$env:USERPROFILE\.codex\skills\xan\scripts\xan.ps1" groupby category "sum(amount) as total" sales.csv

xan— agent skill

Is xan safe to install?

xan

When to Use

Boundaries

Script

Examples

Audit the pieces. Scan the whole. Decide.