echo-arg

A small testing skill that repeats a supplied argument exactly.

In plain words
What is it for?
Use it to test argument handling and exact output.
Why use it?
It helps check whether a system passes values through correctly without adding or changing text.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/gpt-agi/clawd-code/echo-arg
Any agent
npx skills add GPT-AGI/Clawd-Code --skill echo-arg
Clone the repo
git clone --depth 1 https://github.com/GPT-AGI/Clawd-Code

Made for: Claude Code, Codex.

Per session 10 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 34 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00010 $0.00034
Opus 5 $0.00005 $0.00017
Sonnet 5 $0.00002 $0.00007
Haiku 4.5 $0.00001 $0.00003

Measured 2d ago against content hash 4ef6daee8f83, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

echo-arg scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.clawd/skills/echo-arg/SKILL.md · 8 lines

What it actually says

Repeat this value exactly, with no extra words: $arg

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 8 lines · 10 tokens per session scan A 4ef6daee8f83

Subscribe to this mod's changes

echo-arg is a skill published in the GitHub repository GPT-AGI/Clawd-Code (572 stars, last pushed 4mo ago), licensed MIT. It adds 10 tokens to every session and 34 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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