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debug-cors-preflight-failures

90 / 100 · Low risk

Fine to try. Some of what it can do is expected: a coding skill usually runs build and test commands.

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

Use when a browser blocks a cross-origin request with a CORS error while curl and the server succeed. Reproduce the OPTIONS preflight, read the Access-Control-* headers, and fix the exact header the browser is missing rather than disabling the policy.

Works with any agent that supports SKILL.md skills.

Partially scanned — some files couldn't be read; we'll retry on the next scan

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/'debug-cors-preflight-failures' ] || [ -L ~/.agents/skills/'debug-cors-preflight-failures' ]; then echo 'A skill folder named debug-cors-preflight-failures 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 "$d" checkout --quiet '0dc9f60ab1f3fcae24da49c4cef09c46c589f903' -- 'skills/payments/0xklen-debug-cors-preflight-failures' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/payments/0xklen-debug-cors-preflight-failures' ~/.agents/skills/'debug-cors-preflight-failures' && 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/'debug-cors-preflight-failures' ~/.claude/skills/'debug-cors-preflight-failures' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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