file_type

file_type is a skill for Claude Code, Codex from nicolasmelo1/logion. It costs 0 tokens per session (10 once invoked), scanned A, original, MIT.

A file-type test containing an executable that is blocked from running.

In plain words
What is it for?
Checking whether an executable file is prevented from running.
Why use it?
Blocking the executable prevents it from being launched accidentally or when it is not allowed.

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/nicolasmelo1/logion/file_type
Any agent
npx skills add nicolasmelo1/logion --skill file_type
Clone the repo
git clone --depth 1 https://github.com/nicolasmelo1/logion

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for file_type

README.md
[![agentmods](https://agentmods.dev/badge/skills/nicolasmelo1/logion/file_type.svg)](https://agentmods.dev/skills/nicolasmelo1/logion/file_type)
Your own site
<a href="https://agentmods.dev/skills/nicolasmelo1/logion/file_type"><img src="https://agentmods.dev/badge/skills/nicolasmelo1/logion/file_type.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 10 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 $0.00000 $0.00010
Opus 5 $0.00000 $0.00005
Sonnet 5 $0.00000 $0.00002
Haiku 4.5 $0.00000 $0.00001

Measured 4d ago against content hash 6d92fbff2212, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

file_type 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 4d 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.

packages/scanners/tests/fixtures/file_type/SKILL.md · 4 lines

What it actually says

File Type Test

Contains a blocked executable.

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 4d ago First seen · 4 lines · 0 tokens per session scan A 6d92fbff2212

Subscribe to this mod's changes

file_type is a skill published in the GitHub repository nicolasmelo1/logion (36 stars, last pushed today), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 10 tokens. 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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