React Router Bug Fix Workflow
remix-run/react-router
Fixes a React Router bug reported in a GitHub issue end to end: fetching the issue, validating the reproduction, writing a failing test and implementing the fix on a new branch.
A skill your agent uses when a bug, failing test, or unexpected behaviour needs investigation, especially across sessions or context resets.
Install Gsd Debug
$ npx skills add coco-research/coco --skill gsd-debug -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install coco-research/coco gsd-debug --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/coco-research/coco.git skills-src && mkdir -p .claude/skills && cp -r skills-src/systems/gsd/skills/gsd-debug .claude/skills/gsd-debug && 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 "gsd-debug" agent skill from https://github.com/coco-research/coco/tree/main/systems/gsd/skills/gsd-debug into .claude/skills/gsd-debug/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gsd-debug", 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/coco-research/coco/tree/main/systems/gsd/skills/gsd-debugType 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 coco-research/coco --skill gsd-debug -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install coco-research/coco gsd-debug --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/coco-research/coco.git skills-src && mkdir -p .agents/skills && cp -r skills-src/systems/gsd/skills/gsd-debug .agents/skills/gsd-debug && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "gsd-debug" agent skill from https://github.com/coco-research/coco/tree/main/systems/gsd/skills/gsd-debug into .agents/skills/gsd-debug/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gsd-debug", 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 coco-research/coco --skill gsd-debug -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install coco-research/coco gsd-debug --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/coco-research/coco.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/systems/gsd/skills/gsd-debug .cursor/skills/gsd-debug && 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 "gsd-debug" agent skill from https://github.com/coco-research/coco/tree/main/systems/gsd/skills/gsd-debug into .cursor/skills/gsd-debug/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gsd-debug", 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/coco-research/coco.git --path systems/gsd/skills/gsd-debug--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 coco-research/coco --skill gsd-debug -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install coco-research/coco gsd-debug --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/coco-research/coco.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/systems/gsd/skills/gsd-debug .gemini/skills/gsd-debug && 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 "gsd-debug" agent skill from https://github.com/coco-research/coco/tree/main/systems/gsd/skills/gsd-debug into .gemini/skills/gsd-debug/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gsd-debug", 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 coco-research/coco gsd-debugInstalls 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 coco-research/coco --skill gsd-debug -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/coco-research/coco.git skills-src && mkdir -p .github/skills && cp -r skills-src/systems/gsd/skills/gsd-debug .github/skills/gsd-debug && 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 "gsd-debug" agent skill from https://github.com/coco-research/coco/tree/main/systems/gsd/skills/gsd-debug into .github/skills/gsd-debug/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gsd-debug", 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 coco-research/coco --skill gsd-debug -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install coco-research/coco gsd-debug --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/coco-research/coco.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/systems/gsd/skills/gsd-debug .opencode/skills/gsd-debug && 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 "gsd-debug" agent skill from https://github.com/coco-research/coco/tree/main/systems/gsd/skills/gsd-debug into .opencode/skills/gsd-debug/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gsd-debug", 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
gsd-debug- GitHub stars
- 473
- Token cost
- ~1.3k tokens
- SKILL.md length
- 423 words
- Files
- 1
- Skills in repo
- 60
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
A skill your agent uses when a bug, failing test, or unexpected behaviour needs investigation, especially across sessions or context resets.
- Works in 6 steps: Initialize Context → Check Active Sessions → Gather Symptoms (if new issue) → …
- Unexpected behaviour needs investigation
- SKILL.md covers 0. Initialize Context, 1. Check Active Sessions, 2. Gather Symptoms (if new… and 3. Spawn gsd-debugger Agent, plus 2 more sections
- Calls node
What it does
Gsd Debug is an agent skill from coco-research/coco. Use when a bug, failing test, or unexpected behaviour needs investigation, especially across sessions or context resets. Isolates it in a debugger subagent with persistent .planning/debug state, unlike skills/systematic-debugging.
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.
It sits in Development, covering Debugging, Failing and flaky tests and Subagents. The repository describes itself as: CoCo Super Intelligence is the orchestration layer that turns Claude Code, Cursor, or Codex into an engineering department: a routed advisory board, 226 skills, 386 commands…
When your agent uses it
- Unexpected behaviour needs investigation
- Especially across sessions
Example prompts
- “/gsd-debug”
Requirements
- Pre-approved tools (allowed-tools): Read, Bash, Task, AskUserQuestion
Workflow steps
6 steps, taken from the step headings in SKILL.md.
- Initialize Context
- Check Active Sessions
- Gather Symptoms (if new issue)
- Spawn gsd-debugger Agent
- Handle Agent Return
- Spawn Continuation Agent (After Checkpoint or "Fix now")
What it can do on your machine
Read from SKILL.md and the folder at commit 6036e9c. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
ReadBashTaskAskUserQuestion
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
node
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
Gsd Debug loads about 1.3k tokens when it runs. Until then it costs about 60 tokens; SKILL.md has 423 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: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
allowed-tools: Read, Bash, Task, AskUserQuestion
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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 423 words (~1,269 tokens).
“Debug issues using scientific method with subagent isolation.”
- name
- gsd-debug
- allowed-tools
- Read, Bash, Task, AskUserQuestion
- argument-hint
- [--diagnose] [issue description]
Files
Just SKILL.md in systems/gsd/skills/gsd-debug of coco-research/coco.
Open the folder on GitHubat commit 6036e9c
Compare with similar skills
Gsd Debug 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 |
|---|---|---|---|---|---|---|
| Gsd Debug this skillcoco-research/coco | 473 | — | ~1.3k | Automated safety check: Notes | Custom licence | |
| React Router Bug Fix Workflowremix-run/react-router | 57k | — | ~1.3k | Automated safety check: Pass | MIT | |
| MCP Debuggerdebugmcp/mcp-debugger | 171 | — | ~3.8k | Automated safety check: Pass | MIT | |
| Runtime DebugOpenHikmah/openhikmah-web | 181 | — | ~618 | Automated safety check: Pass | GPL-3.0 | |
| Root Cause Debuggingjsmastery-pro/skills | 1.4k | — | ~1.8k | Automated safety check: Notes | MIT | |
| Astra Orchestratordonvito/codex-astra-luna-orchestrator | 1.7k | — | ~3k | Automated safety check: Pass | Apache-2.0 |
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Any bug, failing or flaky test, or surprise behavior?. An agent skill from christopherarter/superpowers-reasonix.
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Related
Categories
Questions about Gsd Debug
What does Gsd Debug do?
A skill your agent uses when a bug, failing test, or unexpected behaviour needs investigation, especially across sessions or context resets. Gsd Debug is an agent skill from coco-research/coco. Use when a bug, failing test, or unexpected behaviour needs investigation, especially across sessions or context resets.
When should I use Gsd Debug?
Gsd Debug fits situations like: unexpected behaviour needs investigation; especially across sessions.
How do I install Gsd Debug in Claude Code?
Run `npx skills add coco-research/coco --skill gsd-debug -a claude-code`. Or copy the skill folder (systems/gsd/skills/gsd-debug in coco-research/coco) into .claude/skills/gsd-debug in your project. Claude Code loads it when a task matches its description.
How do I install Gsd Debug in Codex?
Run `npx skills add coco-research/coco --skill gsd-debug -a codex`. Or copy the skill folder (systems/gsd/skills/gsd-debug in coco-research/coco) into .agents/skills/gsd-debug in your project. Codex loads it when a task matches its description.
Can I use Gsd Debug 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 coco-research/coco --skill gsd-debug -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/gsd-debug, .gemini/skills/gsd-debug, .github/skills/gsd-debug and .opencode/skills/gsd-debug in your project.
What does Gsd Debug need to run?
Going by SKILL.md and its folder, Gsd Debug needs the command-line tools its instructions call (node). Its frontmatter pre-approves these tools: Read, Bash, Task, AskUserQuestion.
Does Gsd Debug 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 Gsd Debug safe to install?
Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does Gsd Debug use?
Gsd Debug has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Gsd Debug use?
About 1.3k tokens (SKILL.md is roughly 5.1k 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 Gsd Debug?
Skills that share tags, products or a category with Gsd Debug: React Router Bug Fix Workflow (remix-run/react-router, 57k stars), MCP Debugger (debugmcp/mcp-debugger, 171 stars), Runtime Debug (OpenHikmah/openhikmah-web, 181 stars) and Root Cause Debugging (jsmastery-pro/skills, 1.4k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Gsd Debug?
coco-research (a GitHub user) maintains it in coco-research/coco, which has 473 GitHub stars. The repository holds 60 skills in this directory. The repository was last updated on October 7, 2026.
Source: coco-research/coco on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.