RAG and search: tools for developers

Retrieval-augmented tools, vector databases, embeddings and semantic search. An entry can appear under several use cases when its topics or description provide several explicit signals.

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120 entries in this view.

Tool ranking

Ranked by known GitHub stars, highest first; archived repositories come after maintained repositories. Raw values keep their source-specific window, shown under each tool; a change requires at least two snapshots from the last 7 days.

  1. 1

    MCP
    Active

    Google NotebookLM over MCP + a local HTTP REST API. Citation-backed Q&A, audio/video/content generation, multi-account rotation. For Claude Code, Codex, Cursor, n8n, Zapier, Make.

    TypeScriptLicense: MIT
    • agentic-skill
    • anthropic
    • automation
    • citations
    • claude-code

    githubmeasured growthOpen source ↗

    173GitHub stars+6 (+3.6 %)
  2. 2

    Other
    Active

    剧本分镜工具智能体（PenShot）：电影/动漫/短剧/小说/剧本→分镜→片段→prompt | 基于 LangGraph+LLM，自动解析任意格式剧本，生成 Sora/Veo/Runway 等模型可用的连贯text-to-video提示词。保持角色/剧情跨片段一致，支持 MCP/REST API/函数调用 | Python库 + A2A集成。（LLM-powered screenplay-to-video-prompt agent. Break scripts into…

    PythonLicense: MIT
    • agent-to-agent
    • ai-filmmaking
    • ai-video-generation
    • character-consistency
    • function-calling

    githubmeasured growthOpen source ↗

    172GitHub stars+19 (+12.4 %)
  3. 3

    Skill
    Active

    Local-first, auditable Python code agent. Ships its own 30-task hidden-test benchmark plus SWE-bench Verified scored by the official harness -- every number reproducible, negative results included.

    PythonLicense: MIT
    • agent
    • agent-evaluation
    • agent-skills
    • code-agent
    • llm

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/hwfengcs/DM-Code-Agent ~/.claude/skills/DM-Code-Agent

    151GitHub starsstable
  4. 4

    Agent
    Active

    Ruby's capable AI runtime

    RubyLicense: MIT
    • a2a
    • a2a-client
    • agent
    • agent2agent
    • agents

    githubmeasured growthOpen source ↗

    139GitHub stars+2 (+1.5 %)
  5. 5

    MCP
    Active

    Context Engineering: Build Consistent, Accurate, Predictable AI Systems

    PythonLicense: Apache-2.0
    • agent-skills
    • agentic-ai
    • context-engineering
    • generative-ai
    • llm

    githubmeasured growthOpen source ↗

    136GitHub stars+4 (+3.0 %)
  6. 6

    Skill
    Active

    A self-hosted knowledge platform for humans and AI agents — publish wikis, blogs, and portable Agent Skills.

    TypeScriptLicense: Apache-2.0
    • agent-skills
    • ai-agent
    • blog
    • golang
    • knowledge-base

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/Ciao1019/Petrichor ~/.claude/skills/Petrichor

    127GitHub stars+1 (+0.79 %)
  7. 7

    Skill
    Active

    Find out what your coding agents already know. Docmancer indexes the memory, rules, and instructions Claude Code, Codex, Cursor, and Gemini wrote on your machine, then carries the durable parts to every agent. It is local-first and under…

    PythonLicense: MIT
    • agent-memory
    • ai
    • ai-agents
    • ai-memory
    • claude-code

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/docmancer/docmancer ~/.claude/skills/docmancer

    123GitHub stars+1 (+0.82 %)
  8. 8

    Skill
    Active

    Local-first AI knowledge app and Agent Skill with evidence-backed Wiki, an interactive knowledge universe, Viki Q&A, and shareable knowledge galaxies.

    JavaScriptLicense: MIT
    • agent-skills
    • ai-agents
    • ai-assistant
    • claude-code
    • codex

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/NimaChu/my-wiki ~/.claude/skills/my-wiki

    123GitHub starsstable
  9. 9

    MCP
    Active

    Apple Developer Documentation with Semantic Search, RAG, and AI reranking for MCP clients

    TypeScriptLicense: MIT

      mcpmeasured growthOpen source ↗

      Remote server, to be declared in the MCP configuration https://mcp.apple-rag.com

      117GitHub stars+1 (+0.86 %)
    • 10

      Skill
      Active

      AI-agent skill producing reusable Markdown from PDFs. It turns flowcharts, diagrams, and charts into text beside each caption instead of empty links. It checks an earlier conversion against the PDF and fixes misread or missing parts. Long…

      PythonLicense: AGPL-3.0
      • agent-skills
      • ai-agents
      • codex
      • codex-skill
      • document-conversion

      githubmeasured growthOpen source ↗

      Install git clone https://github.com/libnyx/LT2MD ~/.claude/skills/LT2MD

      111GitHub stars+46 (+70.8 %)
    • 11

      MCP
      Active

      MCP server for Claude Code and Codex. One tool call replaces ~42 minutes of agent exploration

      TypeScriptLicense: MIT
      • ai-agents
      • claude
      • claude-ai
      • claude-code
      • claude-code-plugin

      githubmeasured growthOpen source ↗

      109GitHub stars+7 (+6.9 %)
    • 12

      MCP
      Active

      Alibaba Cloud DashScope MCP: Qwen chat, embeddings, and model discovery on your own account.

      ↓ 84 downloads/weekJavaScriptLicense: Apache-2.0

        mcpmeasured growthOpen source ↗

        Install claude mcp add alibaba-cloud -- npx @three-ws/alibaba-cloud-mcp

        105GitHub starsstable
      • 13

        MCP
        Active

        x402 pay-per-use IBM Granite AI: chat, code, embeddings, analysis, forecasting. Pay USDC per call.

        ↓ 70 downloads/weekJavaScriptLicense: Apache-2.0

          mcpmeasured growthOpen source ↗

          Install claude mcp add ibm-x402-mcp -- npx @three-ws/ibm-x402-mcp

          105GitHub starsstable
        • 14

          MCP
          Active

          IBM watsonx.ai MCP by three.ws: chat, text generation, embeddings, and tokenization.

          ↓ 73 downloads/weekJavaScriptLicense: Apache-2.0

            mcpmeasured growthOpen source ↗

            Install claude mcp add ibm-watsonx -- npx @three-ws/ibm-watsonx-mcp

            105GitHub starsstable
          • 15

            MCP
            Active

            Pay-per-use IBM Granite AI via x402: chat, code, embeddings, forecasting. USDC on Base or Solana.

            JavaScriptLicense: Apache-2.0

              mcpmeasured growthOpen source ↗

              Remote server, to be declared in the MCP configuration https://three.ws/api/ibm-mcp

              105GitHub starsstable
            • 16

              MCP
              Active

              Self improving agents through iterations

              PythonLicense: Apache-2.0
              • agent-learning
              • agent-memory
              • agentic-workflows
              • ai-agents
              • claude-code

              githubmeasured growthOpen source ↗

              104GitHub starsstable
            • 17

              Skill
              Active

              Andrej Karpathy's LLM Wiki pattern as a skill & Claude Code plugin — turn accumulated sources into a self-maintaining, scalable markdown knowledge base.

              TypeScriptLicense: MIT
              • ai-tools
              • claude-code-plugin
              • claude-code-skill
              • codex-skill
              • cursor

              githubmeasured growthOpen source ↗

              Install /plugin marketplace add praneybehl/llm-wiki-plugin

              99GitHub stars+5 (+5.3 %)
            • 18

              Agent
              Active

              🚀 Way Back Home

              PythonLicense: Apache-2.0
              • a2a
              • adk
              • agents
              • bigquery
              • google-cloud

              githubmeasured growthOpen source ↗

              96GitHub starsstable
            • 19

              Skill
              Active

              Distill any document corpus into a navigable skill hierarchy for LLM agents — no retrieval system needed at serve time.

              PythonLicense: MIT
              • agent-skills
              • emnlp-2026
              • enterprise-search
              • llm
              • llm-agents

              githubmeasured growthOpen source ↗

              Install git clone https://github.com/dukesun99/Corpus2Skill ~/.claude/skills/Corpus2Skill

              84GitHub stars+1 (+1.2 %)
            • 20

              Skill
              Active

              Harness engineering applied to knowledge production: a self-evolving multi-agent newsroom that turns your documents into a cross-linked markdown wiki. A "reground" loop pulls published pages back in before they go stale — writer ≠ reviewer,…

              PythonLicense: MIT
              • agentic-ai
              • ai-agents
              • claude
              • claude-code
              • claude-skills

              githubmeasured growthOpen source ↗

              Install git clone https://github.com/alfadur7/llm-wiki-newsroom ~/.claude/skills/llm-wiki-newsroom

              81GitHub stars+1 (+1.2 %)
            • 21

              MCP
              Active

              AST knowledge graph MCP server for Claude Code — semantic search, call graph traversal, HTTP route tracing, impact analysis. Auto-indexes 10 languages via Tree-sitter.

              RustLicense: MIT
              • ast
              • call-graph
              • claude-code
              • claude-code-plugin
              • code-navigation

              githubmeasured growthOpen source ↗

              72GitHub stars+2 (+2.9 %)
            • 22

              MCP
              Active

              Cross-platform persistent memory MCP for Codex, Gemini CLI, Claude Code, and other local MCP hosts. 36 cited neuroscience mechanisms, local-first SQLite/PostgreSQL, hybrid retrieval, decay-based consolidation, and reproducible benchmarks.…

              PythonLicense: MIT
              • agent-memory-system
              • agent-skills
              • causal-inference
              • claude-code
              • codex

              githubmeasured growthOpen source ↗

              71GitHub starsstable
            • 23

              Skill
              Active

              The official Pinecone marketplace for Claude Code Plugins

              PythonLicense: MIT
              • anthropic-claude
              • claude-code
              • claude-code-plugin
              • claude-code-plugin-marketplace
              • hybrid-search

              githubmeasured growthOpen source ↗

              Install /plugin marketplace add pinecone-io/pinecone-claude-code-plugin

              68GitHub starsstable

            Learning resources

            Ranked by known GitHub stars, highest first; archived repositories come after maintained repositories. These resources remain available separately and do not take part in the main tool ranking.

            1. 1

              atlas-agent-control-plane

              Skill
              ActiveOpen source ↗

              AtlasAgent - an auditable AI agent control plane: evidence-backed memory, governed tool runtime, checkpoint DAG recovery, and a 55-chapter engineering tutorial. FastAPI / Next.js PWA / Textual TUI

              PythonLicense: MIT
              • agent
              • agent-framework
              • agent-orchestration
              • agent-skills
              • agentic-ai
              github

              Install git clone https://github.com/malevrigns/atlas-agent-control-plane ~/.claude/skills/atlas-agent-control-plane

              Resourcemeasured growth
              110GitHub stars+39 (+54.9 %)
            2. 2

              membrane

              Skill
              ActiveOpen source ↗

              A selective learning and memory substrate for agentic systems — typed, revisable, decayable memory with competence learning and trust-aware retrieval.

              GoLicense: MIT
              • agent
              • agent-framework
              • agent-memory
              • agent-skills
              • agentic
              github

              Install git clone https://github.com/BennettSchwartz/membrane ~/.claude/skills/membrane

              Resourcemeasured growth
              94GitHub starsstable