Agent skill

Kg Extract

Extract entities and relations from source files to build a knowledge graph

MITAuto-check: notesKnowledge Management

Install Kg Extract

skills CLI

$ npx skills add ruvnet/ruflo --skill kg-extract -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install ruvnet/ruflo kg-extract --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/ruvnet/ruflo.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/ruflo-knowledge-graph/skills/kg-extract .claude/skills/kg-extract && rm -rf skills-src

Use ~/.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/

Paste into Claude Code

Install the "kg-extract" agent skill from https://github.com/ruvnet/ruflo/tree/main/plugins/ruflo-knowledge-graph/skills/kg-extract into .claude/skills/kg-extract/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kg-extract", 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

$skill-installer install https://github.com/ruvnet/ruflo/tree/main/plugins/ruflo-knowledge-graph/skills/kg-extract

Type 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.

skills CLI

$ npx skills add ruvnet/ruflo --skill kg-extract -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install ruvnet/ruflo kg-extract --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/ruvnet/ruflo.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/ruflo-knowledge-graph/skills/kg-extract .agents/skills/kg-extract && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "kg-extract" agent skill from https://github.com/ruvnet/ruflo/tree/main/plugins/ruflo-knowledge-graph/skills/kg-extract into .agents/skills/kg-extract/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kg-extract", 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.

skills CLI

$ npx skills add ruvnet/ruflo --skill kg-extract -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install ruvnet/ruflo kg-extract --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/ruvnet/ruflo.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/ruflo-knowledge-graph/skills/kg-extract .cursor/skills/kg-extract && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "kg-extract" agent skill from https://github.com/ruvnet/ruflo/tree/main/plugins/ruflo-knowledge-graph/skills/kg-extract into .cursor/skills/kg-extract/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kg-extract", 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

$ gemini skills install https://github.com/ruvnet/ruflo.git --path plugins/ruflo-knowledge-graph/skills/kg-extract

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add ruvnet/ruflo --skill kg-extract -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install ruvnet/ruflo kg-extract --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/ruvnet/ruflo.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/ruflo-knowledge-graph/skills/kg-extract .gemini/skills/kg-extract && rm -rf skills-src

Use ~/.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/

Paste into Gemini CLI

Install the "kg-extract" agent skill from https://github.com/ruvnet/ruflo/tree/main/plugins/ruflo-knowledge-graph/skills/kg-extract into .gemini/skills/kg-extract/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kg-extract", 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.

GitHub CLI

$ gh skill install ruvnet/ruflo kg-extract

Installs 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).

skills CLI

$ npx skills add ruvnet/ruflo --skill kg-extract -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/ruvnet/ruflo.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/ruflo-knowledge-graph/skills/kg-extract .github/skills/kg-extract && rm -rf skills-src

Use ~/.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/

Paste into GitHub Copilot

Install the "kg-extract" agent skill from https://github.com/ruvnet/ruflo/tree/main/plugins/ruflo-knowledge-graph/skills/kg-extract into .github/skills/kg-extract/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kg-extract", 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.

skills CLI

$ npx skills add ruvnet/ruflo --skill kg-extract -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install ruvnet/ruflo kg-extract --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/ruvnet/ruflo.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/ruflo-knowledge-graph/skills/kg-extract .opencode/skills/kg-extract && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "kg-extract" agent skill from https://github.com/ruvnet/ruflo/tree/main/plugins/ruflo-knowledge-graph/skills/kg-extract into .opencode/skills/kg-extract/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kg-extract", 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: kg-extract
GitHub stars: 74k
Token cost: ~751 tokens
SKILL.md length: 262 words
Files: 1
Skills in repo: 264
Repo updated: Oct 9, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Extract entities and relations from source files to build a knowledge graph

Works in 6 steps: Scan files -- use Glob and Read to… → Identify entities -- extract classes,… → Map relations -- for each entity,… → …
Tasks that involve Knowledge graphs
SKILL.md covers When to use, Steps and CLI alternative
Calls npx

What it does

Kg Extract is an agent skill from ruvnet/ruflo. Extract entities and relations from source files to build a knowledge graph

Its SKILL.md is about 750 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 Knowledge Management, covering Knowledge graphs. The repository describes itself as: 🌊 The original agent harness. Deploy intelligent multi-player swarms, coordinate autonomous workflows, and build conversational AI systems. Features adaptive memory…. The licence is MIT.

When your agent uses it

Tasks that involve Knowledge graphs

Example prompts

“/kg-extract”

Requirements

Node.js
Pre-approved tools (allowed-tools): Read, Glob, Grep, mcp__plugin_ruflo-core_ruflo__agentdb_hierarchical-store, mcp__plugin_ruflo-core_ruflo__agentdb_causal-edge, mcp__plugin_ruflo-core_ruflo__agentdb_pattern-store, mcp__plugin_ruflo-core_ruflo__embeddings_generate, Bash

Workflow steps

6 steps, taken from the first numbered list in SKILL.md.

Scan files -- use Glob and Read to enumerate and read source files at the given path
Identify entities -- extract classes, functions, modules, types, and config references from each file
Map relations -- for each entity, determine its relations to other entities. Critical: TypeScript import type and inline type specifiers…
Store in AgentDB -- call mcpplugin_ruflo-core_rufloagentdb_hierarchical-store for each entity with metadata (name, type, file, line…
Create edges -- call mcpplugin_ruflo-core_rufloagentdb_causal-edge for each relation with source, target, relation type, and weight
Report -- summarize: total entities by type, total relations by type, files scanned

What it can do on your machine

Read from SKILL.md and the folder at commit 58e0ae7. 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:
- Read
- Glob
- Grep
- mcp__plugin_ruflo-core_ruflo__agentdb_hierarchical-store
- mcp__plugin_ruflo-core_ruflo__agentdb_causal-edge
- mcp__plugin_ruflo-core_ruflo__agentdb_pattern-store
- mcp__plugin_ruflo-core_ruflo__embeddings_generate
- Bash
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
- npx
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use npx, 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

Kg Extract loads about 751 tokens when it runs. Until then it costs about 22 tokens; SKILL.md has 262 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~22
When it runs · the whole SKILL.md, loaded when a task matches: ~751

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, Glob, Grep, mcp__plugin_ruflo-core_ruflo__agentdb_hierarchical-store, mcp__plugin_ruflo-core_r

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

Download SKILL.mdSave it as .claude/skills/kg-extract/SKILL.md (or your agent's skills folder).

name: kg-extract
description: Extract entities and relations from source files to build a knowledge graph
allowed-tools: Read, Glob, Grep, mcp__plugin_ruflo-core_ruflo__agentdb_hierarchical-store, mcp__plugin_ruflo-core_ruflo__agentdb_causal-edge, mcp__plugin_ruflo-core_ruflo__agentdb_pattern-store, mcp__plugin_ruflo-core_ruflo__embeddings_generate, Bash
argument-hint: <path>

KG Extract

Extract entities (classes, functions, modules, types, concepts) and their relations (imports, extends, implements, depends-on, calls) from source files, then store them as a knowledge graph in AgentDB.

When to use

When you need to build or update a knowledge graph from source code or documentation. Useful for understanding codebase structure, dependency analysis, and impact assessment.

Steps

Scan files -- use Glob and Read to enumerate and read source files at the given path
Identify entities -- extract classes, functions, modules, types, and config references from each file
Map relations -- for each entity, determine its relations to other entities. Critical: TypeScript import type and inline type specifiers (import { type Foo, bar }) are erased at compile time and MUST NOT be counted as value imports -- they're a separate, weaker relation. Misclassifying them produces phantom runtime cycles (see ruvnet/ruflo#2049).
- imports: value imports (import { x } from '...', require(...)) -- weight 0.9
- type-depends-on: TypeScript type-only imports (import type { Foo } from '...' and import { type Foo, value } from '...') -- weight 0.1, never used for cycle detection or runtime impact analysis
- extends: class inheritance -- weight 0.9
- implements: interface implementations -- weight 0.7
- depends-on: constructor dependencies, injected services -- weight 0.8
- calls: function/method invocations -- weight 0.7
- references: documentation mentions, comments -- weight 0.3
Regex hint for classifying TS imports (so a naive from '...' grep doesn't conflate the two):
```
^\s*import\s+type\s+               → type-depends-on (entire import is type-only)
^\s*import\s*\{[^}]*\btype\s+\w+   → split: type specifiers → type-depends-on, value specifiers → imports
^\s*import\s+[^{]*\bfrom\s+        → imports (value)
```
Store in AgentDB -- call mcp__plugin_ruflo-core_ruflo__agentdb_hierarchical-store for each entity with metadata (name, type, file, line, description)
Create edges -- call mcp__plugin_ruflo-core_ruflo__agentdb_causal-edge for each relation with source, target, relation type, and weight
Report -- summarize: total entities by type, total relations by type, files scanned

CLI alternative

bash

npx @claude-flow/cli@latest memory store --namespace knowledge-graph --key "entity-NAME" --value "METADATA_JSON"
npx @claude-flow/cli@latest memory search --query "entities in auth module" --namespace knowledge-graph

Files

Just SKILL.md in plugins/ruflo-knowledge-graph/skills/kg-extract of ruvnet/ruflo.

Open the folder on GitHubat commit 58e0ae7

Compare with similar skills

Kg Extract 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.

Kg Extract compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Kg Extract this skillruvnet/ruflo	74k	—	~751	Automated safety check: Notes	MIT	today
Obsidian Canvas BoardsAgriciDaniel/claude-obsidian	15k	—	~1.4k	Automated safety check: Pass	MIT	28 days ago
Ontology1mancompany/OneManCompany	441	2 repos	~1.5k	Automated safety check: Pass	Apache-2.0	1 mo ago
Knowledge Graphgnomeria/usbtree	691	—	~1.5k	Automated safety check: Pass	MIT	1 mo ago
Graphagenticnotetaking/arscontexta	3.5k	—	~4.9k	Automated safety check: Notes	MIT	7 mo ago
LLM Wiki Knowledge GraphEgonex-AI/Understand-Anything	86k	—	~1.5k	Automated safety check: Pass	MIT	today

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Questions about Kg Extract

What does Kg Extract do?

Extract entities and relations from source files to build a knowledge graph. Kg Extract is an agent skill from ruvnet/ruflo.

When should I use Kg Extract?

Kg Extract fits situations like: tasks that involve Knowledge graphs.

How do I install Kg Extract in Claude Code?

Run `npx skills add ruvnet/ruflo --skill kg-extract -a claude-code`. Or copy the skill folder (plugins/ruflo-knowledge-graph/skills/kg-extract in ruvnet/ruflo) into .claude/skills/kg-extract in your project. Claude Code loads it when a task matches its description.

How do I install Kg Extract in Codex?

Run `npx skills add ruvnet/ruflo --skill kg-extract -a codex`. Or copy the skill folder (plugins/ruflo-knowledge-graph/skills/kg-extract in ruvnet/ruflo) into .agents/skills/kg-extract in your project. Codex loads it when a task matches its description.

Can I use Kg Extract 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 ruvnet/ruflo --skill kg-extract -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/kg-extract, .gemini/skills/kg-extract, .github/skills/kg-extract and .opencode/skills/kg-extract in your project.

What does Kg Extract need to run?

Going by SKILL.md and its folder, Kg Extract needs the command-line tools its instructions call (npx). Our summary lists: Node.js. Its frontmatter pre-approves these tools: Read, Glob, Grep, mcp__plugin_ruflo-core_ruflo__agentdb_hierarchical-store, mcp__plugin_ruflo-core_ruflo__agentdb_causal-edge, mcp__plugin_ruflo-core_ruflo__agentdb_pattern-store, mcp__plugin_ruflo-core_ruflo__embeddings_generate, Bash.

Does Kg Extract access the network?

SKILL.md contains no URLs. Its commands use npx, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Kg Extract 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 Kg Extract use?

Kg Extract is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Kg Extract use?

About 751 tokens (SKILL.md is roughly 3k 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 Kg Extract?

Skills that share tags, products or a category with Kg Extract: Obsidian Canvas Boards (AgriciDaniel/claude-obsidian, 15k stars), Ontology (1mancompany/OneManCompany, 441 stars), Knowledge Graph (gnomeria/usbtree, 691 stars) and Graph (agenticnotetaking/arscontexta, 3.5k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Kg Extract?

ruvnet (a GitHub user) maintains it in ruvnet/ruflo, which has 74,159 GitHub stars. The repository holds 264 skills in this directory. The repository was last updated on October 9, 2026.

Source: ruvnet/ruflo on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Kg Extract

Install Kg Extract

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

KG Extract

When to use

Steps

CLI alternative

Files

Compare with similar skills

Similar skills

Obsidian Canvas Boards

Ontology

Knowledge Graph

Graph

LLM Wiki Knowledge Graph

Gitnexus Guide

More from ruvnet/ruflo

AgentDB Pattern Memory

Security Audit Scanner

SPARC Development Methodology

Swarm Orchestration

Ruflo Multi-Agent Orchestration

Agent Coordination

Questions about Kg Extract

Install Kg Extract

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

KG Extract

When to use

Steps

CLI alternative

Files

Compare with similar skills

Similar skills

More from ruvnet/ruflo

Related

Questions about Kg Extract