---
title: "AFL++ - Air Market"
description: "You want to fuzz a C or C++ project and you have more than one processor core sitting idle. AFL++ is a fork of AFL built for that, with extra features on top. Reach for it when plain AFL is what you…"
canonical: "https://airmarket.ai/app/aflpp"
---

[Air Market](/) / [Security](/category/security) / AFL++

Skill by [Trail of Bits](/@trailofbits)

# AFL++

Put every core you have on fuzzing a C or C++ project

## What this does

You want to fuzz a C or C++ project and you have more than one processor core sitting idle. AFL++ is a fork of AFL built for that, with extra features on top. Reach for it when plain AFL is what you know but not what you want to run.

### Top 3 things it does for you

- Fuzz a C or C++ project across many cores
- Set up AFL++ on a codebase
- Use AFL++'s advanced features instead of plain AFL

## Information

**AFL++ at a glance**

|  |  |
| --- | --- |
| Kind | Skill |
| Publisher | [Trail of Bits](/@trailofbits) |
| Category | [Security](/category/security) |
| Works with | Agent Skills - an open standard supported by 40+ agents |
| Size | 23 KB |
| Licence | CC-BY-SA-4.0 |
| Repository | [trailofbits/skills](https://github.com/trailofbits/skills/tree/d5fe2e6a7896236c3102fd5477e833623ad70298/plugins/testing-handbook-skills/skills/aflpp) |
| GitHub stars | 6,823 (as of Nov 2026) |
| Installs | 5,573, counted by skills.sh (Nov 2026) |

## Security report

**Verified.** AIR scanned this exact version of AFL++ and flagged nothing. AIR's verdict: **safe**.

**What AFL++'s check was run against**

|  |  |
| --- | --- |
| Commit | d5fe2e6a7896236c3102fd5477e833623ad70298 |
| Content hash | 6cadd84d36323a52f77f9638efabd30dddc085a15f363c22e403a82ecde1e172 |
| Files read | [Browse the files at this exact commit](https://github.com/trailofbits/skills/blob/d5fe2e6a7896236c3102fd5477e833623ad70298/plugins/testing-handbook-skills/skills/aflpp/SKILL.md) |

A scan is named by the exact content it read, not by a version number. A different version is a different artifact, and nothing here applies to a version AIR has not scanned.

[Read the full security report for AFL++](/security/aflpp)

## About AFL++

AFL++ is a fork of AFL with better fuzzing performance and advanced features. Use it for multi-core fuzzing of C and C++ projects.

## What's inside

- SKILL.md - instructions
- agents/openai.yaml - data
- assets/trail-of-bits-mark.svg - template

## Questions

### Is AFL++ safe to install?

AIR scanned this exact version of AFL++ and flagged nothing. AIR's verdict: safe. The verdict is named by the content that was read, at commit d5fe2e6a7896, so it cannot drift onto a version nobody scanned. The full report is at https://airmarket.ai/security/aflpp.

### How do I install AFL++?

Open https://airmarket.ai/app/aflpp on Air Market and use the install action: Air Market hands Claude a prompt naming this exact skill, and Claude sets it up. Source, pinned to the exact commit this listing describes: https://github.com/trailofbits/skills/tree/d5fe2e6a7896236c3102fd5477e833623ad70298/plugins/testing-handbook-skills/skills/aflpp. Install from that link, not the branch.

## Related on Air Market

- [More Security listings](/category/security)
- [Everything by Trail of Bits](/@trailofbits)

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Canonical URL: <https://airmarket.ai/app/aflpp>