A code-structure query tool that maps files, classes, methods, imports, dependencies, and likely change impacts. It uses a generated abstract syntax tree (a structured representation of code) as its input.

Use it to inspect a file’s structure, find what depends on an interface or module, estimate a change’s impact radius, identify central dependency points, and divide a project into broad areas.

It helps answer dependency questions before a refactor, so you can see which files may be affected instead of guessing. It also highlights highly connected parts of an older codebase.

nexus-query — Skill for Claude Code and Codex by Haaaiawd

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add Haaaiawd/ANWS --skill nexus-query

Clone the repo

git clone --depth 1 https://github.com/Haaaiawd/ANWS

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/haaaiawd/anws/nexus-query/github.svg)](https://agentmods.dev/skills/haaaiawd/anws/nexus-query)

Your own site

<a href="https://agentmods.dev/skills/haaaiawd/anws/nexus-query"><img src="https://agentmods.dev/badge/skills/haaaiawd/anws/nexus-query/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/haaaiawd/anws/nexus-query"><img src="https://agentmods.dev/badge/skills/haaaiawd/anws/nexus-query.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 119 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,483 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00119	$0.01483
Opus 5	$0.00060	$0.00741
Sonnet 5	$0.00024	$0.00297
Haiku 4.5	$0.00012	$0.00148

Measured 9d ago against content hash 9ab35d70df65, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

nexus-query scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/extract_ast.py, scripts/git_detective.py, scripts/query_graph.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

src/anws/templates/.agents/skills/nexus-query/SKILL.md · 115 lines

How it starts

The opening of the file, as written. The whole thing — 115 lines — stays where its author put it; the contents beside it link to each section on GitHub.

nexus-query — 代码结构精准查询

何时调用

场景	调用
「这个文件有哪些类/方法，依赖什么」	是
「改这个接口/模块，哪些文件受影响」	是
「这个改动的影响半径是多大」	是
「项目里谁是真正的核心依赖节点」	是
「整个项目大概分哪几块」	是
用户希望生成完整的 `.nexus-map/` 知识库	否 → 改用 nexus-mapper
运行环境无 shell 执行能力	否
宿主机无本地 Python 3.10+	否

前提：确保 ast_nodes.json 可用

进入查询前 → 检查是否有 ast_nodes.json
├── 有（.nexus-map/raw/ast_nodes.json 或用户指定路径）→ 直接查询
└── 没有 → 运行 extract_ast.py 生成 → 再查询

# 默认路径（和 nexus-mapper 的 .nexus-map/ 兼容，可互通）
AST_JSON="$repo_path/.nexus-map/raw/ast_nodes.json"
GIT_JSON="$repo_path/.nexus-map/raw/git_stats.json"    # 可选

# 若 ast_nodes.json 不存在，先创建目录再生成（约数秒）
mkdir -p "$repo_path/.nexus-map/raw"
python $SKILL_DIR/scripts/extract_ast.py $repo_path > $AST_JSON

# 若需要 git 风险数据（可选，仅在存在 .git 时）
python $SKILL_DIR/scripts/git_detective.py $repo_path --days 90 > $GIT_JSON

$SKILL_DIR 为本 Skill 的安装路径（通常是 .agents/skills/nexus-query，投影到目标 IDE 时以该目标的 skills 目录为准）。

依赖安装（首次使用）：

pip install -r $SKILL_DIR/scripts/requirements.txt

五个查询模式

# 文件骨架：类、方法、行号、import 清单
python $SKILL_DIR/scripts/query_graph.py $AST_JSON --file <path>
python $SKILL_DIR/scripts/query_graph.py $AST_JSON --file <path> --git-stats $GIT_JSON

# 反向依赖：谁 import 了这个模块（区分源码文件和测试文件）
python $SKILL_DIR/scripts/query_graph.py $AST_JSON --who-imports <module_or_path>

# 影响半径：上游依赖 + 下游被依赖（X upstream, Y downstream）
python $SKILL_DIR/scripts/query_graph.py $AST_JSON --impact <path>
python $SKILL_DIR/scripts/query_graph.py $AST_JSON --impact <path> --git-stats $GIT_JSON

# 全仓库核心节点：按扇入（被引用最多）和扇出（引用最多）排序
python $SKILL_DIR/scripts/query_graph.py $AST_JSON --hub-analysis [--top N]

# 按顶层目录聚合结构摘要
python $SKILL_DIR/scripts/query_graph.py $AST_JSON --summary

各模式核心价值

模式	一句话价值	典型触发时机
`--file`	不读源码也能掌握文件骨架，精确到行号	接手大型模块前；Bug 调查缩小读取区间
`--who-imports`	改接口前的"炸弹清单"——列出所有调用方	删函数/改签名/重命名类之前，必须跑
`--impact`	`0 upstream, 24 downstream` 一眼看清改动范围	Sprint 估时；评估修改是局部手术还是全局手术
`--hub-analysis`	找出真正的高耦合核心，不靠目录名猜	架构评审；技术债优先级排序
`--summary`	5 秒建立全局分层认知，比 README 更客观	初次接触项目；识别循环依赖风险区域

Read the full file on GitHub · 115 lines

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

9d ago First seen · 115 lines · 119 tokens per session scan A 9ab35d70df65

Subscribe to this mod's changes

nexus-query is a skill published in the GitHub repository Haaaiawd/ANWS (142 stars, last pushed 3mo ago), licensed MIT. It adds 119 tokens to every session and 1,483 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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