Agent skill

Hunt Exceptional Conditions

by sickn33 in sickn33/agentic-awesome-skills

Hunt mishandling of exceptional conditions. An agent skill from sickn33/agentic-awesome-skills.

MITAuto-check passed

Install Hunt Exceptional Conditions

skills CLI
$ npx skills add sickn33/agentic-awesome-skills --skill hunt-exceptional-conditions -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install sickn33/agentic-awesome-skills hunt-exceptional-conditions --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/sickn33/agentic-awesome-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/hunt-exceptional-conditions .claude/skills/hunt-exceptional-conditions && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
hunt-exceptional-conditions
GitHub stars
47k
Used in
1 other repo
Token cost
~1.3k tokens
SKILL.md length
541 words
Files
1
Skills in repo
1,497
Repo updated
First seen
Licence
MIT

At a glance

Hunt mishandling of exceptional conditions. An agent skill from sickn33/agentic-awesome-skills.

  • SKILL.md covers What actually pays, Recon, Attack — send what the code… and What counts as a leak (the…, plus 3 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Hunt Exceptional Conditions is an agent skill from sickn33/agentic-awesome-skills. Hunt mishandling of exceptional conditions

Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts. Compatibility notes: Requires explicit written authorization for a target scope plus the relevant testing tools for this technique. Docs-only; helper scripts and commands not…

The repository describes itself as: AAS Core is the local, agent-first control plane for complete catalog discovery, agent-owned selection, stack validation, and planning, backed by 2,400+ agentic skills. Includes… The licence is MIT.

Example prompts

  • “/hunt-exceptional-conditions”

Requirements

  • Compatibility (from SKILL.md): Requires explicit written authorization for a target scope plus the relevant testing tools for this technique. Docs-only; helper scripts and commands not bundled.

What it can do on your machine

Read from SKILL.md and the folder at commit b84d35a. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are bash).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • github.com

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

  • Compatibility

    Requires explicit written authorization for a target scope plus the relevant testing tools for this technique. Docs-only; helper scripts and commands not bundled.

    From compatibility in the SKILL.md frontmatter.

Context cost

Hunt Exceptional Conditions loads about 1.3k tokens when it runs. Until then it costs about 18 tokens; SKILL.md has 541 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~18
When it runs · the whole SKILL.md, loaded when a task matches
~1.3k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from sickn33/agentic-awesome-skills at commit b84d35a, republished under its MIT licence (© sickn33). 541 words, ~1,315 tokens.

Download SKILL.mdSave it as .claude/skills/hunt-exceptional-conditions/SKILL.md (or your agent's skills folder).
name
hunt-exceptional-conditions
description
Hunt mishandling of exceptional conditions
compatibility
Requires explicit written authorization for a target scope plus the relevant testing tools for this technique. Docs-only; helper scripts and commands not bundled.
category
security
risk
offensive
source
https://github.com/elementalsouls/Claude-BugHunter
source_repo
elementalsouls/Claude-BugHunter
source_type
community
date_added
2026-09-20
license
MIT
license_source
https://github.com/elementalsouls/Claude-BugHunter/blob/main/LICENSE
report_count
0
sources
hackerone_public

⚠️ AUTHORIZED USE ONLY This skill is for educational purposes or authorized security assessments only. You must have explicit, written permission from the system owner before using this tool. Misuse of this tool is illegal and strictly prohibited.

Mandatory confirmation gate Before running any command that probes, exploits, changes, persists on, extracts data from, or attempts credential access against a target:

  1. Ask the user to state the exact target URL, IP, account, or resource.
  2. Ask the user to confirm written authorization and the permitted scope.
  3. Show the exact command(s) and explain their expected effect.
  4. Wait for explicit confirmation in the current conversation.

Without that confirmation, remain read-only and provide defensive guidance only. Prefer a sandbox, disposable VM, or controlled lab.

HUNT-EXCEPTIONAL-CONDITIONS — Verbose Errors / Fail-Open (A10:2025)

What actually pays

Well-built apps catch errors and return a clean, generic message. A broken app, when handed input it didn't expect, throws an unhandled exception and renders a developer error page straight to the client — leaking the stack trace, the ORM/query internals, server-side file paths, and framework/library versions. That disclosure is the finding (and it arms SQLi/RCE/path attacks next).

Recon

Any endpoint that parses input is a candidate; the richest are:

JSON APIs that expect typed fields:  POST /api/* with {numbers, ids, enums}
Endpoints with numeric/id path or query params:  /item/{id}, ?page=, ?quantity=
Search / filter / sort params
File or content-type sensitive uploads

Attack — send what the code didn't anticipate

Take a known-good request and break ONE assumption at a time:

  • Wrong type: a field the app expects to be a number/string is sent as an array or object — {"rating":"x","comment":[1,2,3]}, {"quantity":{}}.
  • Malformed body: truncated/!invalid JSON, an unterminated string, a stray brace, a wrong/missing Content-Type.
  • Boundary/oversized: a very long string, a huge/negative/overflow number.
  • Null byte / control chars embedded in a value.
POST /api/Feedbacks   {"rating":"notanumber","comment":[1,2,3]}
GET  /item/' OR /item/%00   (also exercises the error path)

Watch the RESPONSE BODY, not just the status: a 500 (or even a 200/400) whose body contains a stack trace or framework error page is the signal.

Show full SKILL.md (247 more words)Show less

What counts as a leak (the success signal)

A finding is confirmed when the response body contains a cross-framework error-disclosure signature:

  • Node/Express + Sequelize: SequelizeDatabaseError, node_modules/sequelize, a JS stack with internal paths.
  • PHP: <b>Warning</b> ... /var/www/.../file.php on line N.
  • Python: Traceback (most recent call last), werkzeug.exceptions.
  • Java: at com.app.Foo(Foo.java:42) stack frames.
  • .NET: Server Error in '/' Application, a [System.XxxException: ...] YSOD.

A clean JSON error ({"error":"Invalid input"}) with no internals is NOT a finding — that's correct handling. Disclosure of internal structure is.

Validation discipline

  • Capture the exact leaked artifact (path, ORM class, version, stack frame) — that's the evidence. "It returned 500" alone is not disclosure.
  • Note what the leak enables next (e.g. a disclosed SQL error → hunt-sqli; a disclosed absolute path → hunt-lfi).

When to Use

  • You have explicit, written authorization to assess the target in scope, and the task matches this skill's vulnerability class or technique within a bug-bounty or penetration-test engagement.
  • You need the recon, exploitation, or validation workflow described below — executed strictly inside the approved scope.

Limitations

  • Authorized scope only: the confirmation gate above is mandatory before any probing, exploitation, or credential-access command.
  • Docs-only import: upstream helper scripts, commands, engine, and research assets are not bundled; reinstall tooling from the source repo when needed.
  • Validate every finding (see triage-validation) before reporting; report via report-writing. Prefer a sandbox, disposable VM, or controlled lab.
Example
bash
# Read-only first step; confirm scope before anything active.
cat scope.txt  # target list from the authorized engagement brief

Adapted from elementalsouls/Claude-BugHunter (MIT); frontmatter, When to Use/Limitations, and safety boundaries added for upstream compliance. Docs-only import: executable helpers, commands, engine, and research assets not bundled.

© sickn33, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/hunt-exceptional-conditions of sickn33/agentic-awesome-skills.

Open the folder on GitHubat commit b84d35a

Used in 1 other repository

We found 5 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in sickn33/agentic-awesome-skills, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Hunt Exceptional Conditions next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Hunt Exceptional Conditions compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Hunt Exceptional Conditions this skillsickn33/agentic-awesome-skills47k1 repos~1.3kAutomated safety check: PassMIT
Hunt Exceptional Conditionselementalsouls/Claude-BugHunter4.8k—~786Automated safety check: PassMIT
Logistics Exception Managementaffaan-m/ECC277k4 repos~4.2kAutomated safety check: PassApache-2.0
Threat Huntingzhaoxuya520/reverse-skill41k2 repos~344Automated safety check: WarnMIT
Secops Huntgoogle/skills21k1 repos~2.6kAutomated safety check: PassApache-2.0
Conditioningbenchflow-ai/skillsbench1.8k—~1.3kAutomated safety check: PassApache-2.0

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Questions about Hunt Exceptional Conditions

What does Hunt Exceptional Conditions do?

Hunt mishandling of exceptional conditions. An agent skill from sickn33/agentic-awesome-skills. Hunt Exceptional Conditions is an agent skill from sickn33/agentic-awesome-skills.

How do I install Hunt Exceptional Conditions in Claude Code?

Run `npx skills add sickn33/agentic-awesome-skills --skill hunt-exceptional-conditions -a claude-code`. Or copy the skill folder (skills/hunt-exceptional-conditions in sickn33/agentic-awesome-skills) into .claude/skills/hunt-exceptional-conditions in your project. Claude Code loads it when a task matches its description.

How do I install Hunt Exceptional Conditions in Codex?

Run `npx skills add sickn33/agentic-awesome-skills --skill hunt-exceptional-conditions -a codex`. Or copy the skill folder (skills/hunt-exceptional-conditions in sickn33/agentic-awesome-skills) into .agents/skills/hunt-exceptional-conditions in your project. Codex loads it when a task matches its description.

Can I use Hunt Exceptional Conditions in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add sickn33/agentic-awesome-skills --skill hunt-exceptional-conditions -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/hunt-exceptional-conditions, .gemini/skills/hunt-exceptional-conditions, .github/skills/hunt-exceptional-conditions and .opencode/skills/hunt-exceptional-conditions in your project.

What does Hunt Exceptional Conditions need to run?

SKILL.md names no scripts, command-line tools or credentials: Hunt Exceptional Conditions is instructions for the agent only. Compatibility (from SKILL.md): Requires explicit written authorization for a target scope plus the relevant testing tools for this technique. Docs-only; helper scripts and commands not bundled..

Does Hunt Exceptional Conditions access the network?

SKILL.md names 1 domain. As links in the text: github.com. This is read from the text; nothing was executed.

Is Hunt Exceptional Conditions safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Hunt Exceptional Conditions use?

Hunt Exceptional Conditions is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Hunt Exceptional Conditions use?

About 1.3k tokens (SKILL.md is roughly 5.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Hunt Exceptional Conditions?

Skills that share tags, products or a category with Hunt Exceptional Conditions: Hunt Exceptional Conditions (elementalsouls/Claude-BugHunter, 4.8k stars), Logistics Exception Management (affaan-m/ECC, 277k stars), Threat Hunting (zhaoxuya520/reverse-skill, 41k stars) and Secops Hunt (google/skills, 21k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Hunt Exceptional Conditions?

sickn33 (a GitHub user) maintains it in sickn33/agentic-awesome-skills, which has 47,405 GitHub stars. The repository holds 1,497 skills in this directory. The repository was last updated on October 9, 2026.

Source: sickn33/agentic-awesome-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.