Fizz
pashov/skills
Generate Echidna/Medusa-compatible Solidity fuzz suites from Foundry or Hardhat projects.
Extract crash inputs from fuzzing output into a target directory.
Install Extract Crashes
$ npx skills add opensage-agent/opensage-adk --skill extract-crashes -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install opensage-agent/opensage-adk extract-crashes --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/opensage-agent/opensage-adk.git skills-src && mkdir -p .claude/skills && cp -r skills-src/src/opensage/bash_tools/fuzz/extract-crashes .claude/skills/extract-crashes && rm -rf skills-srcUse ~/.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/
Install the "extract-crashes" agent skill from https://github.com/opensage-agent/opensage-adk/tree/main/src/opensage/bash_tools/fuzz/extract-crashes into .claude/skills/extract-crashes/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "extract-crashes", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/opensage-agent/opensage-adk/tree/main/src/opensage/bash_tools/fuzz/extract-crashesType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add opensage-agent/opensage-adk --skill extract-crashes -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install opensage-agent/opensage-adk extract-crashes --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/opensage-agent/opensage-adk.git skills-src && mkdir -p .agents/skills && cp -r skills-src/src/opensage/bash_tools/fuzz/extract-crashes .agents/skills/extract-crashes && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "extract-crashes" agent skill from https://github.com/opensage-agent/opensage-adk/tree/main/src/opensage/bash_tools/fuzz/extract-crashes into .agents/skills/extract-crashes/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "extract-crashes", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add opensage-agent/opensage-adk --skill extract-crashes -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install opensage-agent/opensage-adk extract-crashes --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/opensage-agent/opensage-adk.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/src/opensage/bash_tools/fuzz/extract-crashes .cursor/skills/extract-crashes && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "extract-crashes" agent skill from https://github.com/opensage-agent/opensage-adk/tree/main/src/opensage/bash_tools/fuzz/extract-crashes into .cursor/skills/extract-crashes/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "extract-crashes", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/opensage-agent/opensage-adk.git --path src/opensage/bash_tools/fuzz/extract-crashes--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add opensage-agent/opensage-adk --skill extract-crashes -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install opensage-agent/opensage-adk extract-crashes --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/opensage-agent/opensage-adk.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/src/opensage/bash_tools/fuzz/extract-crashes .gemini/skills/extract-crashes && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "extract-crashes" agent skill from https://github.com/opensage-agent/opensage-adk/tree/main/src/opensage/bash_tools/fuzz/extract-crashes into .gemini/skills/extract-crashes/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "extract-crashes", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install opensage-agent/opensage-adk extract-crashesInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add opensage-agent/opensage-adk --skill extract-crashes -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/opensage-agent/opensage-adk.git skills-src && mkdir -p .github/skills && cp -r skills-src/src/opensage/bash_tools/fuzz/extract-crashes .github/skills/extract-crashes && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "extract-crashes" agent skill from https://github.com/opensage-agent/opensage-adk/tree/main/src/opensage/bash_tools/fuzz/extract-crashes into .github/skills/extract-crashes/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "extract-crashes", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add opensage-agent/opensage-adk --skill extract-crashes -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install opensage-agent/opensage-adk extract-crashes --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/opensage-agent/opensage-adk.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/src/opensage/bash_tools/fuzz/extract-crashes .opencode/skills/extract-crashes && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "extract-crashes" agent skill from https://github.com/opensage-agent/opensage-adk/tree/main/src/opensage/bash_tools/fuzz/extract-crashes into .opencode/skills/extract-crashes/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "extract-crashes", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
extract-crashes- GitHub stars
- 127
- Token cost
- ~215 tokens
- SKILL.md length
- 61 words
- Files
- 2 (incl. scripts)
- Skills in repo
- 21
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Extract crash inputs from fuzzing output into a target directory.
- Tasks that involve Fuzzing
- SKILL.md covers Usage, Parameters, Return Value and Requires Sandbox, plus 1 more section
- Runs Shell scripts from its folder
What it does
Extract Crashes is an agent skill from opensage-agent/opensage-adk. Extract crash inputs from fuzzing output into a target directory.
Its SKILL.md is about 220 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including scripts (for example `scripts/extract_crashes.sh`).
It sits in Security, covering Fuzzing. The licence is Apache-2.0.
When your agent uses it
- Tasks that involve Fuzzing
Example prompts
- “/extract-crashes”
Requirements
- A Bash shell
What it can do on your machine
Read from SKILL.md and the folder at commit 54d6470. 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
Ships 1 file in scripts/ (Shell), which the agent can run.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
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.
Context cost
Extract Crashes loads about 215 tokens when it runs. Until then it costs about 20 tokens; SKILL.md has 61 words of instructions outside code blocks.
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); the scripts in this folder are not scanned.
SKILL.md
The full file from opensage-agent/opensage-adk at commit 54d6470, republished under its Apache-2.0 licence (© opensage-agent). 61 words, ~215 tokens.
Download SKILL.mdSave it as
.claude/skills/extract-crashes/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- extract-crashes
- description
- Extract crash inputs from fuzzing output into a target directory.
- should_run_in_sandbox
- fuzz
- returns_json
- false
Extract Crashes
Copy crash input files from fuzzing output to a target directory.
Usage
/bash_tools/fuzz/extract-crashes/scripts/extract_crashes.sh /path/to/target_dir/bash_tools/fuzz/extract-crashes/scripts/extract_crashes.sh /path/to/target_dir crash_file1 crash_file2Parameters
target_dir (required, positional position 0)
Type: str
Target directory to copy crashes into.
crash_names (optional, positional position 1+)
Type: list of strings
Optional crash file names to extract. If omitted, extracts all crashes.
Return Value
Returns text output indicating success/failure.
Requires Sandbox
fuzz
Timeout
30 seconds
© opensage-agent, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file (scripts) in src/opensage/bash_tools/fuzz/extract-crashes of opensage-agent/opensage-adk.
- SKILL.md
- scripts/extract_crashes.sh
Open the folder on GitHubat commit 54d6470
Compare with similar skills
Extract Crashes 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Extract Crashes this skillopensage-agent/opensage-adk | 127 | — | ~215 | Automated safety check: Pass | Apache-2.0 | |
| Fizzpashov/skills | 1.2k | 2 repos | ~11k | Automated safety check: Pass | MIT | |
| Fizz Syncpashov/skills | 1.2k | 2 repos | ~3.9k | Automated safety check: Pass | MIT | |
| Research FuzzerARA-Labs/Agent-Native-Research-Artifact | 692 | — | ~2.4k | Automated safety check: Pass | MIT | |
| Vuln Researchtanweai/xianzhi-research | 185 | — | ~847 | Automated safety check: Pass | None | |
| Binary Reverse Engineering Audittihanyin/REx-skill | 107 | — | ~5.1k | Automated safety check: Pass | MIT |
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Vuln Research
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Related
Categories
Questions about Extract Crashes
What does Extract Crashes do?
Extract crash inputs from fuzzing output into a target directory. Extract Crashes is an agent skill from opensage-agent/opensage-adk. Extract crash inputs from fuzzing output into a target directory.
When should I use Extract Crashes?
Extract Crashes fits situations like: tasks that involve Fuzzing.
How do I install Extract Crashes in Claude Code?
Run `npx skills add opensage-agent/opensage-adk --skill extract-crashes -a claude-code`. Or copy the skill folder (src/opensage/bash_tools/fuzz/extract-crashes in opensage-agent/opensage-adk) into .claude/skills/extract-crashes in your project. Claude Code loads it when a task matches its description.
How do I install Extract Crashes in Codex?
Run `npx skills add opensage-agent/opensage-adk --skill extract-crashes -a codex`. Or copy the skill folder (src/opensage/bash_tools/fuzz/extract-crashes in opensage-agent/opensage-adk) into .agents/skills/extract-crashes in your project. Codex loads it when a task matches its description.
Can I use Extract Crashes 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 opensage-agent/opensage-adk --skill extract-crashes -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/extract-crashes, .gemini/skills/extract-crashes, .github/skills/extract-crashes and .opencode/skills/extract-crashes in your project.
What does Extract Crashes need to run?
Going by SKILL.md and its folder, Extract Crashes needs a shell for the scripts in its folder. Our summary lists: A Bash shell.
Does Extract Crashes access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Extract Crashes 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Extract Crashes use?
Extract Crashes is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Extract Crashes use?
About 215 tokens (SKILL.md is roughly 860 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 Extract Crashes?
Skills that share tags, products or a category with Extract Crashes: Fizz (pashov/skills, 1.2k stars), Fizz Sync (pashov/skills, 1.2k stars), Research Fuzzer (ARA-Labs/Agent-Native-Research-Artifact, 692 stars) and Vuln Research (tanweai/xianzhi-research, 185 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Extract Crashes?
opensage-agent (a GitHub organization) maintains it in opensage-agent/opensage-adk, which has 127 GitHub stars. The repository holds 21 skills in this directory. The repository was last updated on August 4, 2026.
Source: opensage-agent/opensage-adk on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.