CodeScope Codebase Graph Analysis
QwenLM/qwen-code
Answers questions about code structure, history, bugs and PR risk using a CodeScope knowledge graph and semantic index built from the repository.
Use CodeScope to analyze any indexed codebase via its graph database (neug) and vector index (zvec).
Install Codegraph QA
$ npx skills add QwenLM/qwen-code-examples --skill codegraph-qa -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install QwenLM/qwen-code-examples codegraph-qa --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/QwenLM/qwen-code-examples.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/codegraph .claude/skills/codegraph-qa && 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 "codegraph-qa" agent skill from https://github.com/QwenLM/qwen-code-examples/tree/main/skills/codegraph into .claude/skills/codegraph-qa/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codegraph-qa", 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/QwenLM/qwen-code-examples/tree/main/skills/codegraphType 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 QwenLM/qwen-code-examples --skill codegraph-qa -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install QwenLM/qwen-code-examples codegraph-qa --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/QwenLM/qwen-code-examples.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/codegraph .agents/skills/codegraph-qa && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "codegraph-qa" agent skill from https://github.com/QwenLM/qwen-code-examples/tree/main/skills/codegraph into .agents/skills/codegraph-qa/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codegraph-qa", 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 QwenLM/qwen-code-examples --skill codegraph-qa -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install QwenLM/qwen-code-examples codegraph-qa --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/QwenLM/qwen-code-examples.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/codegraph .cursor/skills/codegraph-qa && 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 "codegraph-qa" agent skill from https://github.com/QwenLM/qwen-code-examples/tree/main/skills/codegraph into .cursor/skills/codegraph-qa/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codegraph-qa", 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/QwenLM/qwen-code-examples.git --path skills/codegraph--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 QwenLM/qwen-code-examples --skill codegraph-qa -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install QwenLM/qwen-code-examples codegraph-qa --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/QwenLM/qwen-code-examples.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/codegraph .gemini/skills/codegraph-qa && 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 "codegraph-qa" agent skill from https://github.com/QwenLM/qwen-code-examples/tree/main/skills/codegraph into .gemini/skills/codegraph-qa/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codegraph-qa", 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 QwenLM/qwen-code-examples codegraph-qaInstalls 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 QwenLM/qwen-code-examples --skill codegraph-qa -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/QwenLM/qwen-code-examples.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/codegraph .github/skills/codegraph-qa && 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 "codegraph-qa" agent skill from https://github.com/QwenLM/qwen-code-examples/tree/main/skills/codegraph into .github/skills/codegraph-qa/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codegraph-qa", 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 QwenLM/qwen-code-examples --skill codegraph-qa -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install QwenLM/qwen-code-examples codegraph-qa --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/QwenLM/qwen-code-examples.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/codegraph .opencode/skills/codegraph-qa && 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 "codegraph-qa" agent skill from https://github.com/QwenLM/qwen-code-examples/tree/main/skills/codegraph into .opencode/skills/codegraph-qa/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codegraph-qa", 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
codegraph-qa- GitHub stars
- 143
- Token cost
- ~4.3k tokens
- SKILL.md length
- 1,407 words
- Files
- 5
- Skills in repo
- 9
- Repo updated
- First seen
- Licence
- None found
At a glance
Use CodeScope to analyze any indexed codebase via its graph database (neug) and vector index (zvec).
- Works in 6 steps: Fetches the issue from GitHub (or loads… → Parses file paths, function names, and… → Matches extracted paths to File nodes in… → …
- The user asks about code structure
- SKILL.md covers When to Use This Skill, Getting Started, Two Interfaces: CLI vs Python and Core Python API, plus 7 more sections
- Calls pip, python and gh
What it does
Codegraph QA is an agent skill from QwenLM/qwen-code-examples. Use CodeScope to analyze any indexed codebase via its graph database (neug) and vector index (zvec). Supports Python, JavaScript/TypeScript, C, and Java (including Hadoop-scale repositories). Covers call graphs, dependency analysis, dead code detection, hotspots, module coupling, architectural layering, commit history, change attribution, semantic code search, impact analysis, full architecture reports, and bug root cause analysis from GitHub issues. Use this skill whenever the user asks about code structure…
Its SKILL.md is about 4.3k tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files (for example `bug-analysis.md`, `evals/evals.json` and `patterns.md`).
It sits in Development, covering Root cause analysis, Codebase onboarding and Knowledge graphs. It works with Java, Python, GitHub and JavaScript. The repository describes itself as: A collection of practical examples and best practices for Qwen Code.
When your agent uses it
- The user asks about code structure
- Code dependencies
- Why something changed
- Finding similar functions
Example prompts
- “t mention”
- “/codegraph-qa”
Requirements
- Python 3
Workflow steps
6 steps, taken from the first numbered list in SKILL.md.
- Fetches the issue from GitHub (or loads from cache)
- Parses file paths, function names, and stack traces from the issue body
- Matches extracted paths to File nodes in the graph
- Uses semantic search (cross_locate) to find related code
- Traces callers of mentioned functions via impact()
- Ranks and returns root cause candidates with explanation
What it can do on your machine
Read from SKILL.md and the folder at commit 0ece9fe. 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
Shell commands in SKILL.md call:
pippythongh
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use pip and gh, which can reach the network depending on how they are called.
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
Codegraph QA loads about 4.3k tokens when it runs. Until then it costs about 255 tokens; SKILL.md has 1,407 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); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 1,407 words (~4,279 tokens).
“CodeScope indexes source code into a two-layer knowledge graph — structure (functions, calls, imports, classes, modules) and evolution (commits, file changes, function modifications) — plus semantic embeddings for every function. Supports Python, JavaScript/TypeScript, C, and Java (including Hadoop-scale repositories with…”
- name
- codegraph-qa
Files
SKILL.md and 4 other files in skills/codegraph of QwenLM/qwen-code-examples.
- SKILL.md
- bug-analysis.md
- evals/evals.json
- patterns.md
- schema.md
Open the folder on GitHubat commit 0ece9fe
Compare with similar skills
Codegraph QA 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 |
|---|---|---|---|---|---|---|
| Codegraph QA this skillQwenLM/qwen-code-examples | 143 | — | ~4.3k | Automated safety check: Pass | None | |
| CodeScope Codebase Graph AnalysisQwenLM/qwen-code | 28k | 1 repos | ~9.3k | Automated safety check: Pass | Apache-2.0 | |
| Cross-Language Coding Standardszereight/gitlab-mcp | 2k | 1 repos | ~1.4k | Automated safety check: Pass | MIT | |
| LSP Symbol Navigation Guideweave-os/router | 5.6k | — | ~794 | Automated safety check: Pass | Apache-2.0 | |
| Code Explainermergisi/awesome-openclaw-agents | 4k | — | ~283 | Automated safety check: Pass | MIT | |
| Code To Chartrongxinzy/RongxinAI | 154 | — | ~596 | Automated safety check: Pass | MIT |
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LSP Symbol Navigation Guide
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Code Explainer
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Explains a pasted code snippet in plain English, returning the detected language, a one-sentence summary, how it works and one practical tip.
Code To Chart
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Related
Works with
Categories
Questions about Codegraph QA
What does Codegraph QA do?
Use CodeScope to analyze any indexed codebase via its graph database (neug) and vector index (zvec). Codegraph QA is an agent skill from QwenLM/qwen-code-examples. Use CodeScope to analyze any indexed codebase via its graph database (neug) and vector index (zvec).
When should I use Codegraph QA?
Codegraph QA fits situations like: the user asks about code structure; code dependencies; why something changed; finding similar functions.
How do I install Codegraph QA in Claude Code?
Run `npx skills add QwenLM/qwen-code-examples --skill codegraph-qa -a claude-code`. Or copy the skill folder (skills/codegraph in QwenLM/qwen-code-examples) into .claude/skills/codegraph-qa in your project. Claude Code loads it when a task matches its description.
How do I install Codegraph QA in Codex?
Run `npx skills add QwenLM/qwen-code-examples --skill codegraph-qa -a codex`. Or copy the skill folder (skills/codegraph in QwenLM/qwen-code-examples) into .agents/skills/codegraph-qa in your project. Codex loads it when a task matches its description.
Can I use Codegraph QA 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 QwenLM/qwen-code-examples --skill codegraph-qa -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/codegraph-qa, .gemini/skills/codegraph-qa, .github/skills/codegraph-qa and .opencode/skills/codegraph-qa in your project.
What does Codegraph QA need to run?
Going by SKILL.md and its folder, Codegraph QA needs the command-line tools its instructions call (pip, python and gh). Our summary lists: Python 3.
Does Codegraph QA access the network?
SKILL.md contains no URLs. Its commands use pip and gh, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Codegraph QA 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 Codegraph QA use?
No licence was found for Codegraph QA or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Codegraph QA use?
About 4.3k tokens (SKILL.md is roughly 17k 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 Codegraph QA?
Skills that share tags, products or a category with Codegraph QA: CodeScope Codebase Graph Analysis (QwenLM/qwen-code, 28k stars), Cross-Language Coding Standards (zereight/gitlab-mcp, 2k stars), LSP Symbol Navigation Guide (weave-os/router, 5.6k stars) and Code Explainer (mergisi/awesome-openclaw-agents, 4k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Codegraph QA?
QwenLM (a GitHub organization) maintains it in QwenLM/qwen-code-examples, which has 143 GitHub stars. The repository holds 9 skills in this directory. The repository was last updated on May 19, 2026.
Source: QwenLM/qwen-code-examples on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.