api-fuzzing-bug-bounty

api-fuzzing-bug-bounty is a skill for Claude Code, Codex from ranbot-ai/awesome-skills. It costs 41 tokens per session (1,400 once invoked), scanned A, original, no licence file.

A guide to testing REST, SOAP, and GraphQL APIs for security weaknesses during bug bounty and penetration-testing work. These are different standards for software systems to exchange data.

In plain words
What is it for?
Use it to test APIs, investigate vulnerabilities, and assess authentication and access controls.
Why use it?
It helps security testers look for issues such as authentication bypasses and IDOR, where one user can access another user's data by changing an identifier.

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 to test APIs, investigate vulnerabilities, and assess authentication and access controls.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ranbot-ai/awesome-skills/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 ranbot-ai/awesome-skills --skill api-fuzzing-bug-bounty
Clone the repo
git clone --depth 1 https://github.com/ranbot-ai/awesome-skills

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-bug-bounty

README.md
[![agentmods](https://agentmods.dev/badge/skills/ranbot-ai/awesome-skills/api-fuzzing-bug-bounty/github.svg)](https://agentmods.dev/skills/ranbot-ai/awesome-skills/api-fuzzing-bug-bounty)
Your own site
<a href="https://agentmods.dev/skills/ranbot-ai/awesome-skills/api-fuzzing-bug-bounty"><img src="https://agentmods.dev/badge/skills/ranbot-ai/awesome-skills/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-bug-bounty

Your own site · 80×15
<a href="https://agentmods.dev/skills/ranbot-ai/awesome-skills/api-fuzzing-bug-bounty"><img src="https://agentmods.dev/badge/skills/ranbot-ai/awesome-skills/api-fuzzing-bug-bounty.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,400 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00041 $0.01400
Opus 5 $0.00020 $0.00700
Sonnet 5 $0.00008 $0.00280
Haiku 4.5 $0.00004 $0.00140

Measured 9d ago against content hash dabb37c918eb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

api-fuzzing-bug-bounty scanned grade A with 0 findings 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 9d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/api-fuzzing-bug-bounty/SKILL.md · 226 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. 9d ago First seen · 226 lines · 41 tokens per session scan A dabb37c918eb

Subscribe to this mod's changes

api-fuzzing-bug-bounty is a skill published in the GitHub repository ranbot-ai/awesome-skills (6 stars, last pushed yesterday), with no licence file. It adds 41 tokens to every session and 1,400 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

Related

Other skills, from other repositories

fastapi-guard

Production-ready security middleware for FastAPI. Use when adding IP filtering, rate limiting, per-route security decorators, route-resolution strict mode, global behavior rules, passive/log-only mode, or Guard Agent SaaS telemetry to a FastAPI app. Covers SecurityMiddleware setup, SecurityConfig tuning, and the…

rennf93/fastapi-guard · 72 tokens

fastapi

Use when building, reviewing, testing, securing or shipping a FastAPI / async Python service — routers, Pydantic v2 schemas, dependency injection, async SQLAlchemy 2.0, OAuth2/JWT, ASGITransport tests, production wiring. NOT language-level Python or packaging (that is python), NOT engine-level SQL (that is…

ericrisco/rsc-harness · 94 tokens

gdal-api

Use when programming against GDAL/OGR in C, C++, Python, or .NET for raster/vector I/O, coordinate transformation, or custom geospatial algorithms. GDAL API: low-level programming interface for reading/writing 70+ geospatial formats.

znlgis/opengis-skills · 56 tokens

docutranslate

Use when translating documents locally via LLM — PDF, Word, Excel, Markdown, SRT subtitles with format preservation. DocuTranslate: LLM-powered multi-format local file translation tool with MCP server support.

znlgis/opengis-skills · 47 tokens

fastapi-expert

Expert-level FastAPI development for high-performance Python APIs with async support. Use when the user mentions Python, API, async, REST, OpenAPI, or Pydantic, or when the task involves FastAPI Features.

personamanagmentlayer/pcl · 49 tokens

api-data-fetcher

Fetch economic data from FRED, World Bank, and other APIs.

brycewang-stanford/Auto-Empirical-Research-Skills · 18 tokens