← All skills

harden-file-upload-handlers

85 / 100 · Low risk

Fine to try.

By jiayaoqijia/cryptoskill (GitHub) · other · 81 stars · scanned at commit 0dc9f60

Use when an endpoint accepts file uploads. Checks type validation by content, storage location, size limits, filename handling, and safe serving, then closes the classic bypasses.

Works with any agent that supports SKILL.md skills.

What this skill can do

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'harden-file-upload-handlers' ] || [ -L ~/.agents/skills/'harden-file-upload-handlers' ]; then echo 'A skill folder named harden-file-upload-handlers already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/jiayaoqijia/cryptoskill' "$d" && git -C "$d" checkout --quiet '0dc9f60ab1f3fcae24da49c4cef09c46c589f903' -- 'skills/payments/0xklen-harden-file-upload-handlers' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/payments/0xklen-harden-file-upload-handlers' ~/.agents/skills/'harden-file-upload-handlers' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'harden-file-upload-handlers' ~/.claude/skills/'harden-file-upload-handlers' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

Badge for your README

The badge for jiayaoqijia/cryptoskill shows the score of its lowest-scoring skill.

[![SkillTrust](https://zalavijaysinh.github.io/skilltrust/badges/jiayaoqijia/cryptoskill.svg)](https://zalavijaysinh.github.io/skilltrust/repos/jiayaoqijia/cryptoskill/)

Score history