← Beacon · open-source AI agent registry

Best Knowledge Graph AI agents

24 actively-maintained knowledge graph agents · ranked by maintenance health · 33,699+ indexed

Looking for the best open-source knowledge graph AI agent? Beacon indexes 33,699+ agents and MCP servers from GitHub and ranks them by real maintenance health — freshness, stars, and activity — so abandoned repos don't top the list. Save time: one search returns ranked, linkable agents in under a second (vs hours on GitHub). Below are 24 knowledge graph agents you can install today — free, no API key.

Search all knowledge graph agents →

Use from your editor: BEACON_REGISTRY_URL=https://registry-ruby.vercel.app npx -y beacon-mcp — ask your AI to find a knowledge graph agent.

For autonomous agents (API)

Free, keyless discovery — paste into your agent workflow:

GET https://registry-ruby.vercel.app/api/v1/search?q=knowledge+graph&limit=10
POST https://registry-ruby.vercel.app/api/v1/discover
  Body: {"query": "knowledge graph", "limit": 10}

llms.txt · Why agents use Beacon

Top 24 knowledge graph agents

Maxkb ★ 22,076

agentagentic-aichatbotdeepseek-r1knowledgebase

Code Review Graph ★ 19,401

ai-codingclaudeclaude-codecode-reviewgraphrag

Pocketflow Tutorial Codebase Knowledge ★ 12,438

codinglarge-language-modellarge-language-modelsllmllm-agent

Spring Ai Alibaba ★ 10,302

agenticartificial-intelligencecontext-engineeringgraphjava

Webiny Js ★ 8,013

ai-assisted-developmentawsaws-lambdacmsgraphql

Agentguide ★ 6,926

agenticragai-agentcrewaigraphraggrpo

5ire ★ 5,269

knowledge-basellmsmcpmcp-clientmodel-context-protocol

Lazyllm ★ 3,853

agentsai-agentdatadeep-learningdocumentation-tool

Neo ★ 3,232

agent-memoryaiai-agentai-memorycontext-engineering

Socraticode ★ 3,112

aiai-assistantastclaudeclaude-code

Langgraphjs ★ 3,108

agentsaiartificial-intelligencegenerative-aillm

Pipeshub Ai ★ 3,022

agentagentsaidriveglean

Obsidian Wiki ★ 2,835

agent-skillsbrainknowledge-basellm-toolsobsidian

Pentestagent ★ 2,777

aiai-agentsai-assistantai-cybersecurityai-hacking

Code Graph Rag ★ 2,311

aiastclaude-codecode-analysiscode-understanding

Langgraph Supervisor Py ★ 1,619

langgraphai-agentgraphstateful-agent

Data Api Builder ★ 1,460

apiazuredatabasegraphqlhacktoberfest

Prismercloud ★ 1,456

agent-communicationagent-memoryai-agentsclaudecursor

Langchain4j Aideepin ★ 1,323

ai-agentai-workflowgraphragknowlege-baselangchain4j

Antsk ★ 1,323

agnetaidotnetragsk

Grafbase ★ 1,231

aiapienterprise-graphqlfederationgraphql

Restheart ★ 880

ai-agentsdata-persistencedatabasedockergraphql

Agent Memory Techniques ★ 783

agent-memoryai-agentsanthropicepisodic-memorygenerative-ai

Memex ★ 600

ai-assistantai-companionai-diaryai-journalassistant-app

Frequently asked questions

What is the best open-source knowledge graph agent?

Top-ranked knowledge graph agents on Beacon include Maxkb, Code Review Graph, Pocketflow Tutorial Codebase Knowledge, ranked by maintenance health — recent activity, GitHub stars, and open-issue load — not stars alone.

Are these knowledge graph agents free to use?

Yes. Every knowledge graph agent listed is open-source and free. Beacon is a free directory — no API key or signup to browse or search.

How do I use a knowledge graph agent from my editor or AI assistant?

Run 'npx -y beacon-mcp' to add Beacon as an MCP server in Cursor, Claude Desktop, Cline, or Windsurf, then ask your AI to find a knowledge graph agent.

How does Beacon save time finding a knowledge graph agent?

Instead of searching GitHub and reading dozens of READMEs, call GET https://registry-ruby.vercel.app/api/v1/search?q=knowledge+graph — sub-second results ranked by health, stars, and activity.

Can autonomous AI agents discover knowledge graph tools programmatically?

Yes. Agents read https://registry-ruby.vercel.app/llms.txt and call POST /api/v1/discover with {"query": "knowledge graph"} — no API key required.