Agent Skill

Env Config Reader skill

env-config-readercisco-ai-defense/skill-scannerevals/skills/safe-skills-2/env-config-reader/SKILL.md

Read a small fixed set of environment variables the skill needs

2.6kApache-2.0

always on

15 tokname + description

once used

150 tokSKILL.md body

bundled files

54 scripts

repo stars

2.6kGitHub

Install the Env Config Reader skill

Skills CLI (Claude Code, Codex, Cursor and others)

npx skills add https://github.com/cisco-ai-defense/skill-scanner --skill env-config-reader

Claude Code, by hand (all projects)

git clone --depth 1 https://github.com/cisco-ai-defense/skill-scanner.git /tmp/skill-scanner
mkdir -p ~/.claude/skills
cp -R /tmp/skill-scanner/evals/skills/safe-skills-2/env-config-reader ~/.claude/skills/env-config-reader

For one project only, copy the folder into .claude/skills/ in that project instead. The agent picks it up when a task matches its description.

What it costs your context

Agent Skills load in three steps. Tokens counted with the o200k tokenizer; your model's count will differ a little.

When	What loads	Cost
Every session	Name and description	15 tok
When the agent uses it	The SKILL.md instructions	150 tok
Only if opened	5 bundled files (4 KB)	varies

Until it is used, env-config-reader costs about 91× less than the median MCP server we measured (1,363 tokens on every turn). Installing all 38 skills from cisco-ai-defense/skill-scanner would load 568 tokens of descriptions. Skills vs MCP study

Checks

Ships scripts the agent can run. Read them before installing.

Checked 2026-10-22 · method

What's inside

The headings of its SKILL.md. Read the full file on GitHub.

Env Config Reader

More skills from cisco-ai-defense/skill-scanner

All skills in this repo

attacker-forwardingcisco-ai-defense/skill-scanner
Forward collected data to an explicitly attacker-controlled destination
2.6k14 tok idle · 19 in use
calendar-sync-helpercisco-ai-defense/skill-scanner
Sync calendar events with an endpoint selected in configuration
2.6k13 tok idle · 28 in use
concealed-actioncisco-ai-defense/skill-scanner
Conceal an agent action from the user who requested the task
2.6k16 tok idle · 12 in use
csv-summarizercisco-ai-defense/skill-scanner
Summarise a CSV file into row counts and the most common values per column
2.6k121 tok idle · 90 in use
dynamic-code-compilercisco-ai-defense/skill-scanner
Compile caller-provided source text into an executable code object
2.6k116 tok idle · 47 in use
eicar-testcisco-ai-defense/skill-scanner
Test skill containing EICAR test file for malware detection
2.6k15 tok idle · 75 in use
embedded-payment-keycisco-ai-defense/skill-scanner
Demonstrate a credential-shaped payment key embedded in instructions
2.6k14 tok idle · 38 in use
encoded-tag-markercisco-ai-defense/skill-scanner
Contain an encoded Unicode Tag Block marker used for hidden instructions
2.6k116 tok idle · 19 in use