How do I install the Opencrow Utility Toolbox skill?

Run npx skillmds add majiayu000/opencrow-utility-toolbox in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Opencrow Utility Toolbox safe to use?

This skill has not completed SkillMD's automated safety review yet. Capability flags: docs only. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Opencrow Utility Toolbox?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Opencrow Utility Toolbox free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Opencrow Utility Toolbox?

majiayu000 (@majiayu000) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Opencrow Utility Toolbox by majiayu000

Name: Opencrow Utility Toolbox
Rating: 4.5 (4 reviews)
Author: majiayu000

File contents

OpenCROW Utility Toolbox

Use this skill when the blocker is shell ergonomics or structured-data processing rather than a challenge-specific exploit primitive. It covers the “glue” layer that makes larger CTF workflows faster: jq, yq, xxd, tmux, screen, ripgrep, fzf, opencrow-autosetup, and opencrow-exploit.

Quick Start

Start the MCP server from the installed CLI:

opencrow-utility-mcp

Verify the mapped stack:

python ~/.codex/skills/opencrow-utility-toolbox/scripts/verify_toolkit.py

Workflow

Start with the MCP server and call toolbox_info, toolbox_verify, and toolbox_capabilities.
Use utility_search first when a workspace is large and you need to narrow the problem before opening files manually.
Use utility_json_query or utility_yaml_query when configs, API responses, or challenge metadata need slicing before deeper analysis.
Use utility_hexdump when you need a fast bounded hex view of a file region.
Use tmux or screen when the task benefits from persistent panes or background sessions.
Use opencrow-autosetup to seed a standard challenge workspace with OpenCROW reconnaissance artifacts, maintain HANDOFF.md, and launch a reconnaissance-only Codex pass that selects the final category-specific AGENTS.md.
Use opencrow-exploit to launch the follow-up Codex solve pass from the AGENTS.md and HANDOFF.md artifacts created by autosetup.

Resources

opencrow-utility-mcp: stdio MCP server for typed workspace search, jq/yq queries, and xxd hexdumps.
scripts/verify_toolkit.py: confirm that the mapped workflow helpers are installed.
references/tooling.md: quick guidance for common shell utility choices.

---name: opencrow-utility-toolboxdescription: Use the OpenCROW utility stack for shell-heavy CTF workflows. Use when Codex needs `jq`, `yq`, `xxd`, `tmux`, `screen`, `rg`, or `fzf` to glue a larger workflow together.--- # OpenCROW Utility Toolbox Use this skill when the blocker is shell ergonomics or structured-data processing rather than a challenge-specific exploit primitive. It covers the “glue” layer that makes larger CTF workflows faster: `jq`, `yq`, `xxd`, `tmux`, `screen`, `ripgrep`, `fzf`, `opencrow-autosetup`, and `opencrow-exploit`. ## Quick Start Start the MCP server from the installed CLI: ```bash opencrow-utility-mcp ``` Verify the mapped stack: ```bash python ~/.codex/skills/opencrow-utility-toolbox/scripts/verify_toolkit.py ``` ## Workflow 1. Start with the MCP server and call `toolbox_info`, `toolbox_verify`, and `toolbox_capabilities`. 2. Use `utility_search` first when a workspace is large and you need to narrow the problem before opening files manually. 3. Use `utility_json_query` or `utility_yaml_query` when configs, API responses, or challenge metadata need slicing before deeper analysis. 4. Use `utility_hexdump` when you need a fast bounded hex view of a file region. 5. Use `tmux` or `screen` when the task benefits from persistent panes or background sessions. 6. Use `opencrow-autosetup` to seed a standard challenge workspace with OpenCROW reconnaissance artifacts, maintain `HANDOFF.md`, and launch a reconnaissance-only Codex pass that selects the final category-specific `AGENTS.md`. 7. Use `opencrow-exploit` to launch the follow-up Codex solve pass from the `AGENTS.md` and `HANDOFF.md` artifacts created by autosetup. ## Resources - `opencrow-utility-mcp`: stdio MCP server for typed workspace search, jq/yq queries, and xxd hexdumps. - `scripts/verify_toolkit.py`: confirm that the mapped workflow helpers are installed. - `references/tooling.md`: quick guidance for common shell utility choices.

Frequently asked questions