api-fuzz SKILL.md skillA

api-fuzz from hellodqy/mastermind-bug-bounty is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add hellodqy/mastermind-bug-bounty/api-fuzz@git:20260709.c284c01

Pins git:20260709.c284c01 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
hellodqy/mastermind-bug-bounty
Path
skills/api_fuzz/SKILL.md
Versions recorded
3
Latest version
git:20260709.c284c01, committed Jul 9, 2026
First version recorded
Jun 2, 2026
Size
954 bytes
Repository stars
14
License
none declared

Explore API behavior using real parameters and values before generic fuzzing.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# API Fuzz

## Goal

理解接口行为、参数语义和响应差异,找出能继续串联的异常。

## Tools / Inputs

- Endpoint signatures、auth hints、value pool、response diffs
- 资源索引:`references/INDEX.md`;候选资源:`api-testing-methodology.md`、`api-fuzz-payloads.md`

## Constraints

1. 真实参数和真实值优先,payload 字典最后用。
2. 区分正常业务返回和越权返回。
3. 每次异常都要问它能否导向更高影响。
4. 控制速率,避免因探测破坏后续机会。
5. 负结果必须记录。

## Chain Questions

- 参数能否影响数据范围、角色、租户或导出?
- 响应差异是否泄露权限边界?
- 新字段能否进入 value pool?
- 当前异常更像漏洞、配置问题,还是正常业务?

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add hellodqy/mastermind-bug-bounty/api-fuzz@sha256:afaeb14eca3507d3

The line at the top of this page pins the label git:20260709.c284c01, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_7z4ihqfpubfd5ixb.svg)](https://markdownregistry.com/a/art_7z4ihqfpubfd5ixb)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 3 versions of this file, between Jun 2, 2026 and Jul 9, 2026, about one every 18 days. Its first recorded version is graded C and its latest A.

versioncommittedcommitsizeaudit
git:20260709.c284c01 latest2026-07-09 c284c01 954 BA view · diff
git:20260709.a8826982026-07-09 a882698 931 BA view · diff
git:20260602.95e27a72026-06-02 95e27a7 2,286 BC view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (954 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

hellodqy/mastermind-bug-bounty · 14 stars · license none declared · pushed 2026-09-16 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_7z4ihqfpubfd5ixb
GET https://markdownregistry.com/api/v1/resolve?ref=hellodqy/mastermind-bug-bounty/api-fuzz
GET https://markdownregistry.com/api/v1/blob/afaeb14eca3507d35606443596ac1bbf16138fa05f968af386e34589176c872a

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

More from hellodqy/mastermind-bug-bounty

mastermind-bug-bounty SKILL.md skill
hellodqy/mastermind-bug-bounty · SKILL.md · Four-phase autonomous bug bounty orchestration. Phase 0 maps external assets with deterministic Python helpers, Phase 1…
v4.7.0 · audit A · 14 stars
ai-security-agent SKILL.md skill
hellodqy/mastermind-bug-bounty · agents/ai_security/SKILL.md · AI/LLM security reasoning agent. Explore AI features as connected systems of prompts, tools, memory, retrieval, and…
git:20260709.c284c01 · audit A · 14 stars
attack-surface-analyst SKILL.md skill
hellodqy/mastermind-bug-bounty · agents/analyst/SKILL.md · Rank reconnaissance-derived attack surfaces and design evidence-driven tests without active exploitation.
git:20260711.c1d38ba · audit A · 14 stars
api-fuzz-agent SKILL.md skill
hellodqy/mastermind-bug-bounty · agents/api_fuzz/SKILL.md · API exploration agent. Use endpoint signatures and real response values to expand attack surfaces; do not stop at the…
git:20260711.d202fe9 · audit A · 14 stars
autonomous-attacker SKILL.md skill
hellodqy/mastermind-bug-bounty · agents/attacker/SKILL.md · Test ranked attack surfaces autonomously, preserve evidence, and turn new access into additional attack-chain…
git:20260711.c1d38ba · audit A · 14 stars
bypass-agent SKILL.md skill
hellodqy/mastermind-bug-bounty · agents/bypass/SKILL.md · Access-control bypass agent. Treat 401/403/405 as routing clues, not as final answers; connect bypasses to privilege…
git:20260709.a882698 · audit A · 14 stars
crypto-attack-agent SKILL.md skill
hellodqy/mastermind-bug-bounty · agents/crypto_attack/SKILL.md · Crypto and token reasoning agent. Interpret keys, tokens, signatures, encrypted fields, and their downstream leverage.
git:20260709.a882698 · audit A · 14 stars
exploit-agent SKILL.md skill
hellodqy/mastermind-bug-bounty · agents/exploit/SKILL.md · Exploitation and impact-validation agent. Turn promising findings into confirmed impact, then keep chaining from the…
git:20260709.8be07f4 · audit A · 14 stars
recon-agent SKILL.md skill
hellodqy/mastermind-bug-bounty · agents/recon/SKILL.md · Asset reconnaissance agent. Map externally exposed assets and produce structured evidence for later AI reasoning…
git:20260709.a882698 · audit A · 14 stars
report-agent SKILL.md skill
hellodqy/mastermind-bug-bounty · agents/report/SKILL.md · Report generation agent. Convert verifier-confirmed findings into a fixed evidence-based report without adding…
git:20260916.a5be4e5 · audit A · 14 stars
account-takeover SKILL.md skill
hellodqy/mastermind-bug-bounty · skills/account_takeover/SKILL.md · Analyze login, recovery, verification, MFA, session refresh, and account binding flows when a weakness may let one user…
git:20260915.240c761 · audit A · 14 stars
ai-security SKILL.md skill
hellodqy/mastermind-bug-bounty · skills/ai_security/SKILL.md · Treat AI systems as chains of prompt, retrieval, memory, tools, and permissions.
git:20260914.819e838 · audit A · 14 stars

Every file in hellodqy/mastermind-bug-bounty

Browse by kind, by grade A, or by owner.