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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147 entries in this view.

Tool ranking

Ranked by measured growth, normalized across sources. 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

    Skill
    Active

    Turn any codebase, with its docs, SQL schemas, configs, and PDFs, into a queryable knowledge graph. A /graphify skill for Claude Code, Cursor, Codex, and Gemini CLI: local deterministic AST parsing, every edge explained, no vector store.

    PythonLicense: Apache-2.0
    • ai-agents
    • antigravity
    • ast
    • claude-code
    • code-analysis

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/Graphify-Labs/graphify ~/.claude/skills/graphify

    114 054GitHub stars+2 404 (+2.2 %)
  2. 2

    MCP
    Active

    AI-powered code indexer with semantic search and knowledge graphs

    RustLicense: Apache-2.0

      mcpmeasured growthOpen source ↗

      Install claude mcp add octocode -- npx @muvon/octocode

      459GitHub stars+9 (+2.0 %)
    • 3

      Other
      Active

      An intentionally vulnerable OWASP LLM Top 10 training platform for AI Security, Prompt Injection, RAG Security, Agent Security, and GenAI penetration testing.

      PythonLicense: MIT
      • agent-security
      • ai-security
      • ai-security-tool
      • artificial-intelligence
      • ctf

      githubmeasured growthOpen source ↗

      311GitHub stars+6 (+2.0 %)
    • 4

      Skill
      Active

      Agent Skills for NVIDIA products — install into Claude Code, Codex, and other coding agents to run Physical AI, robotics, simulation, CUDA, and RAG workflows end to end.

      PythonLicense: Apache-2.0
      • agent-skills
      • agentic-ai
      • ai-agents
      • claude-code
      • codex

      githubmeasured growthOpen source ↗

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

      3 172GitHub stars+53 (+1.7 %)
    • 5

      Skill
      Active

      Persistent memory for Claude Code and 6 other CLI agents, stored as plain markdown in your Obsidian vault. Stop re-explaining your projects, decisions and people every session. 45 commands: hybrid semantic search, self-rewriting notes,…

      PythonLicense: MIT
      • agent-skills
      • ai-agents
      • ai-note-taking
      • ai-second-brain
      • anthropic

      githubmeasured growthOpen source ↗

      Install git clone https://github.com/eugeniughelbur/obsidian-second-brain ~/.claude/skills/obsidian-second-brain

      4 292GitHub stars+66 (+1.6 %)
    • 6

      MCP
      Active

      Search your past AI coding sessions — Claude Code, Codex, Cursor and 17 more. Indexes the session history they already wrote to disk, including months from before you installed it, and recalls it in any of them. No LLM, no embeddings, one…

      GoLicense: MIT
      • agent-memory
      • ai-memory
      • claude-code
      • claude-code-hooks
      • claude-code-plugins

      githubmeasured growthOpen source ↗

      742GitHub stars+11 (+1.5 %)
    • 7

      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 ↗

      71GitHub stars+1 (+1.4 %)
    • 8

      MCP
      Active

      Local-first RAG server for developers. Semantic + keyword search for code and technical docs. Works with MCP or CLI. Fully private, zero setup.

      TypeScriptLicense: MIT
      • agent-skills
      • cli-tool
      • developer-tools
      • hybrid-search
      • local-first

      githubmeasured growthOpen source ↗

      378GitHub stars+5 (+1.3 %)
    • 9

      Skill
      Active

      FoJin-powered Buddhist AI persona framework — source-grounded, boundary-aware, fidelity-tested, runtime-ready.

      PythonLicense: MIT
      • agent-skills
      • ai-persona
      • bdrc
      • buddhism
      • chinese-buddhism

      githubmeasured growthOpen source ↗

      Install git clone https://github.com/xr843/Master-skill ~/.claude/skills/Master-skill

      380GitHub stars+5 (+1.3 %)
    • 10

      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

      80GitHub stars+1 (+1.3 %)
    • 11

      Skill
      Active
      Python
      • agent
      • agent-memory
      • agent-skills
      • agentic
      • dsh-plugin

      githubmeasured growthOpen source ↗

      Install git clone https://github.com/mindscale-noah/MindMemOS ~/.claude/skills/MindMemOS

      970GitHub stars+12 (+1.3 %)
    • 12

      MCP
      Active

      Universal MCP Server with advanced AI memory capabilities and semantic search.

      ↓ 913 downloads/weekPythonLicense: Apache-2.0

        mcpmeasured growthOpen source ↗

        Install claude mcp add marm-mcp-server -- uvx marm-mcp-server

        339GitHub stars+4 (+1.2 %)
      • 13

        MCP
        Active

        Context engineering for AI agents. ~80% fewer tokens. Fix tool overload. Skills and memory with in-process BM25 and semantic retrieval. Progressive Disclosure. No vector DB.

        TypeScriptLicense: MIT
        • accuracy
        • agents
        • claude-skills
        • context
        • harness

        githubmeasured growthOpen source ↗

        433GitHub stars+5 (+1.2 %)
      • 14

        MCP
        Active

        Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 20% fewer tokens for coding agents, 60-95% fewer tokens for JSON, same answers. Library, proxy, MCP server.

        PythonLicense: Apache-2.0
        • agent
        • ai
        • anthropic
        • claude-code
        • compression

        githubmeasured growthOpen source ↗

        68 629GitHub stars+784 (+1.2 %)
      • 15

        MCP
        Active

        USPTO patent creation system with MCP server + Claude Code plugin. Hybrid RAG search over MPEP/USC/CFR, BigQuery access to 76M+ patents, automated 35 USC 112 compliance checks, prior art search, diagram generation. GPU-accelerated with…

        PythonLicense: MIT
        • bigquery
        • claude-code
        • claude-code-plugin
        • faiss
        • mcp-server

        githubmeasured growthOpen source ↗

        177GitHub stars+2 (+1.1 %)
      • 16

        Skill
        Active

        A persistent, unified memory layer for all your AI agents (e.g. Claude Code, Codex, DSH), backed by Markdown and Milvus.

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

        githubmeasured growthOpen source ↗

        Install /plugin marketplace add zilliztech/memsearch

        2 546GitHub stars+27 (+1.1 %)
      • 17

        MCP
        Active

        A Go framework for building production agent systems with graph workflows, tools, memory, A2A, AG-UI, MCP, evaluation, and observability.

        GoLicense: Apache-2.0
        • a2a
        • a2a-protocol
        • ag-ui
        • agent
        • agent-framework

        githubmeasured growthOpen source ↗

        1 759GitHub stars+18 (+1.0 %)
      • 18

        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 ↗

        102GitHub stars+1 (+0.99 %)
      • 19

        MCP
        Active

        Self improving agents through iterations

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

        githubmeasured growthOpen source ↗

        105GitHub stars+1 (+0.96 %)
      • 20

        MCP
        Active

        Search arXiv papers, download full text, semantic search, citation graphs, and alerts via MCP.

        PythonLicense: Apache-2.0

          mcpmeasured growthOpen source ↗

          Install claude mcp add arxiv-mcp-server -- uvx arxiv-mcp-server

          3 091GitHub stars+26 (+0.85 %)
        • 21

          MCP
          Active

          A semantic search engine for files and code.

          PythonLicense: MIT

            mcpmeasured growthOpen source ↗

            Install claude mcp add vexor -- uvx vexor

            239GitHub stars+2 (+0.84 %)
          • 22

            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 %)

          Learning resources

          Ranked by measured growth, normalized across sources. These resources remain available separately and do not take part in the main tool ranking.

          1. 1

            agent-systems-handbook

            Agent
            ActiveOpen source ↗

            A practical AI agents handbook covering agent systems, agentic workflows, LangGraph, MCP/A2A, context engineering, agent memory, evaluation, observability, and multi-agent architecture. Current trend focus: Gemini Interactions API and…

            MDX
            • a2a
            • agent-framework
            • agent-memory
            • agentic-ai
            • agentic-workflow
            githubResourcemeasured growth
            316GitHub stars+3 (+0.96 %)
          2. 2

            dspy-skills

            Skill
            ActiveOpen source ↗

            Collection of Claude Skills for DSPy framework - program language models, optimize prompts, and build RAG pipelines systematically

            PythonLicense: MIT
            • agent-skills
            • claude-code
            • claude-skills
            • dspy
            • llm
            github

            Install git clone https://github.com/OmidZamani/dspy-skills ~/.claude/skills/dspy-skills

            Resourcemeasured growth
            122GitHub stars+1 (+0.83 %)
          3. 3

            awesome-llm-apps

            Skill
            ActiveOpen source ↗

            100+ AI Agents, Agent Skills and RAG Apps - Free and Open Source.

            PythonLicense: Apache-2.0
            • agents
            • llms
            • python
            • rag
            github

            Install git clone https://github.com/Shubhamsaboo/awesome-llm-apps ~/.claude/skills/awesome-llm-apps

            Resourcemeasured growth
            135 793GitHub stars+1 057 (+0.78 %)