API Fuzzing for Bug Bounty

95 / 100 · Low risk

Fine to try.

By Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI (GitHub) · coding · 512 stars · scanned at commit c4a059b

This skill should be used when the user asks to "test API security", "fuzz APIs", "find IDOR vulnerabilities", "test REST API", "test GraphQL", "API penetration testing", "bug bounty API testing", or needs guidance on API security assessment techniques.

Works with any agent that supports SKILL.md skills.

What this skill can do

Sends data to these websites: target.com

The author does not mention this.

Found in 3 places.

.agent/skills/api-fuzzing-bug-bounty/sub-skills/dos-via-limits.md, line 86- Add `X-Requested-With: XMLHttpRequest` header to simulate frontend
.agent/skills/api-fuzzing-bug-bounty/sub-skills/example-2-graphql-introspection.md, line 4curl -X POST https://target.com/graphql \
.agent/skills/api-fuzzing-bug-bounty/sub-skills/example-2-graphql-introspection.md, line 15| API returns nothing | Add `X-Requested-With: XMLHttpRequest` header |

Install

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

if [ -e ~/.agents/skills/'api-fuzzing-for-bug-bounty' ] || [ -L ~/.agents/skills/'api-fuzzing-for-bug-bounty' ]; then echo 'A skill folder named api-fuzzing-for-bug-bounty already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI' "$d" && git -C "$d" checkout --quiet 'c4a059bbf7a8d6b2162071f0fbfe74053faa6d20' -- '.agent/skills/api-fuzzing-bug-bounty' && mkdir -p ~/.agents/skills && cp -R "$d"/'.agent/skills/api-fuzzing-bug-bounty' ~/.agents/skills/'api-fuzzing-for-bug-bounty' && 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/'api-fuzzing-for-bug-bounty' ~/.claude/skills/'api-fuzzing-for-bug-bounty' (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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Score history

Date	Version	Score
2026-11-08	`c4a059b`	100
2026-11-07	`c4a059b`	95

Also found in

Identical copies of this skill exist at:

Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI/tests/manual-repair-test/.agent/skills/api-fuzzing-bug-bounty
Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI/tests/manual-test-project/.agent/skills/api-fuzzing-bug-bounty