API Fuzzing for Bug Bounty

API Fuzzing for Bug Bounty is a skill for Claude Code, Codex from tourze/ai-infra. It costs 65 tokens per session (2,751 once invoked), scanned A, original, no licence file.

An API security-testing guide for checking web APIs, including REST and GraphQL services, for weaknesses such as IDOR, where one user can access another user's data.

In plain words
What is it for?
Use it when testing API authentication, authorization, and input handling during security reviews.
Why use it?
It helps structure API checks for security assessments and bug-bounty work instead of relying on ad hoc requests.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it when testing API authentication, authorization, and input handling during security reviews.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tourze/ai-infra/api-fuzzing-bug-bounty
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add tourze/ai-infra --skill api-fuzzing-bug-bounty
Clone the repo
git clone --depth 1 https://github.com/tourze/ai-infra

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for API Fuzzing for Bug Bounty

README.md
[![agentmods](https://agentmods.dev/badge/skills/tourze/ai-infra/api-fuzzing-bug-bounty/github.svg)](https://agentmods.dev/skills/tourze/ai-infra/api-fuzzing-bug-bounty)
Your own site
<a href="https://agentmods.dev/skills/tourze/ai-infra/api-fuzzing-bug-bounty"><img src="https://agentmods.dev/badge/skills/tourze/ai-infra/api-fuzzing-bug-bounty/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for API Fuzzing for Bug Bounty

Your own site · 80×15
<a href="https://agentmods.dev/skills/tourze/ai-infra/api-fuzzing-bug-bounty"><img src="https://agentmods.dev/badge/skills/tourze/ai-infra/api-fuzzing-bug-bounty.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 65 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,751 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00065 $0.02751
Opus 5 $0.00032 $0.01375
Sonnet 5 $0.00013 $0.00550
Haiku 4.5 $0.00006 $0.00275

Measured 12d ago against content hash 6e252cef1aa1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

API Fuzzing for Bug Bounty scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -X POST https://target.com/graphql \
skills/api-fuzzing-bug-bounty/SKILL.md · 434 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 434 lines · 65 tokens per session scan A 6e252cef1aa1

Subscribe to this mod's changes

API Fuzzing for Bug Bounty is a skill published in the GitHub repository tourze/ai-infra (5 stars, last pushed 5mo ago), with no licence file. It adds 65 tokens to every session and 2,751 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

Other skills, from other repositories

research-engineer

An uncompromising Academic Research Engineer. Operates with absolute scientific rigor, objective criticism, and zero flair. Focuses on theoretical correctness, formal verification, and optimal implementation across any required technology.

davila7/claude-code-templates · 43 tokens

tika-eval-compare

Compare extracts from two Tika builds over a corpus to detect regressions in content, encoding, exceptions, and embedded-document handling. Use for "compare before/after extracts", "eval this change against the corpus".

apache/tika · 50 tokens

neuron-evaluation-engineer

Create and run AI evaluations with datasets, assertions, and output drivers in Neuron AI. Use this skill whenever the user mentions evaluation, testing AI systems, creating evaluators, dataset-driven testing, assertion-based validation, or wants to measure AI system performance. Also trigger for tasks involving…

neuron-core/neuron-ai · 77 tokens

jetson-validate-image

Use after jetson-flash-image to run static BSP checks, on-target smoke/regression tests on a flashed DUT, or both. Not for build or flash steps. Triggers: validate bsp, on-target validation.

NVIDIA/skills · 50 tokens

atmos-validation

Validate Atmos projects, components, arbitrary JSON Schema inputs, EditorConfig, and GitHub Actions; use affected-file selection and native CI annotations.

cloudposse/atmos · 31 tokens

skill-benchmark

Benchmark AI skill effectiveness by measuring implementation quality against legacy constraints.

HoangNguyen0403/agent-skills-standard · 16 tokens