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.

Use case

Activity

Sort by

127 entries in this view.

Tool ranking

Ranked by creation date, newest first; undated entries come last. 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

    Agent
    Active

    GEO 生成式引擎优化平台：品牌 GEO 诊断 + 多模态诊断 + 竞品逆向研究。FastAPI + Vue3 + LangGraph。A2A/MCP 就绪。

    PythonLicense: MIT
    • a2a
    • agent
    • ai-search
    • brand-optimization
    • chromadb

    githubmeasured growthOpen source ↗

    1GitHub starsstable
  2. 2

    MCP
    Active

    Academic paper knowledge-base MCP server: PDF ingest, vector search with reranking, KB management.

    PythonLicense: MIT

      mcpmeasured growthOpen source ↗

      Install claude mcp add scholar-rag-mcp -- uvx scholar-rag-mcp

      4GitHub starsstable
    • 3

      MCP
      Active

      MCP server that wraps the Qdrant vector database API as tools.

      PythonLicense: MIT

        mcpestimated momentumOpen source ↗

        Install claude mcp add mcp-qdrant -- uvx mcp-qdrant

        0GitHub stars—
      • 4

        MCP
        Active

        A searchable second brain for AI agents: ranked keyword and semantic search over your Markdown.

        HTMLLicense: AGPL-3.0

          mcpmeasured growthOpen source ↗

          Install claude mcp add kbdb -- npx @dikolab/kbdb

          0GitHub starsstable
        • 5

          MCP
          Active

          Create, search, and update notes in an xNotepad AI notebook, with semantic search and AI Q&A.

          TypeScriptLicense: MIT

            mcpmeasured growthOpen source ↗

            Remote server, to be declared in the MCP configuration https://www.xnotepadai.com/api/mcp/

            0GitHub starsstable
          • 6

            MCP
            Active

            Recall (recall.it) — your AI knowledge base / 'second brain'. Via the official API: semantic search

            License: MIT

              mcpmeasured growthOpen source ↗

              Remote server, to be declared in the MCP configuration https://api.mcp.ai/p_recall

              0GitHub starsstable
            • 7

              MCP
              Active

              Semantic search over 3.5M+ live US job postings pulled straight from company ATSes. Read-only.

              JavaScriptLicense: MIT

                mcpmeasured growthOpen source ↗

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

                2GitHub starsstable
              • 8

                MCP
                Active

                Semantic search over free-to-use stock photos from 9 libraries: by words, image, or similar.

                PythonLicense: MIT

                  mcpmeasured growthOpen source ↗

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

                  0GitHub starsstable
                • 9

                  Agent
                  Active

                  Production-style multi-agent LLM stack: orchestrator + specialists over A2A, LangGraph, MCP, Qdrant, LiteLLM, Langfuse. Human-designed (decisions in ADRs), AI-implemented.

                  PythonLicense: MIT
                  • a2a
                  • ai-gateway
                  • architecture-decision-records
                  • langfuse
                  • langgraph

                  githubmeasured growthOpen source ↗

                  0GitHub starsstable
                • 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

                  89GitHub stars+38 (+74.5 %)
                • 11

                  MCP
                  Active

                  Managed Apache Solr for agents: hybrid BM25+kNN search, server-side embeddings, RAG answers

                  PythonLicense: MIT

                    mcpmeasured growthOpen source ↗

                    Install claude mcp add opensolr-mcp -- uvx opensolr-mcp

                    0GitHub starsstable
                  • 12

                    Skill
                    Active

                    官方简体中文 Agent Skills for SearchCans SERP API、Reader API 与 Account API：深度研究、SEO/GEO 内容差距分析与网页提取审计。

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

                    githubmeasured growthOpen source ↗

                    Install git clone https://github.com/SearchCans/searchcans-skills-zh ~/.claude/skills/searchcans-skills-zh

                    3GitHub starsstable
                  • 13

                    Skill
                    Active

                    Open-source infrastructure that turns scattered SKILL.md files into curated, retrieval-ready agent-skill corpora—with retrieval and evaluation tooling included.

                    PythonLicense: Apache-2.0
                    • agent-memory
                    • agent-skills
                    • ai-agents
                    • benchmark
                    • dataset

                    githubmeasured growthOpen source ↗

                    Install git clone https://github.com/EverMind-AI/SkillCorpus ~/.claude/skills/SkillCorpus

                    424GitHub stars+170 (+66.9 %)
                  • 14

                    Agent
                    Active

                    Production-grade agentic AI on Kubernetes — LangGraph-native agent orchestration (Synapse) on EKS + Istio Ambient Mesh + AgentGateway. Zero-credential LLM access, pluggable MongoDB Atlas Vector Search memory, A2A protocol runtime,…

                    Shell
                    • a2a-protocol
                    • agentgateway
                    • agentic-ai
                    • ai-agents
                    • eks

                    githubmeasured growthOpen source ↗

                    0GitHub starsstable
                  • 15

                    App
                    Active

                    World's first open-source enterprise world model.

                    RustLicense: Apache-2.0
                    • agent-memory
                    • bitemporal
                    • graphrag
                    • knowledge-base
                    • knowledge-graph

                    githubmeasured growthOpen source ↗

                    2 428GitHub stars+1 596 (+191.8 %)
                  • 16

                    MCP
                    Active

                    Bible corpus MCP server: scripture, Greek/Hebrew interlinear data, cross-refs, semantic search.

                    PythonLicense: NOASSERTION

                      mcpmeasured growthOpen source ↗

                      Remote server, to be declared in the MCP configuration https://bible-mcp-server.fly.dev/mcp

                      2GitHub starsstable
                    • 17

                      Agent
                      Active

                      GraphRAG research assistant over the arXiv citation graph - LangGraph orchestration, A2A microservices, MCP tools, Neo4j

                      PythonLicense: MIT
                      • a2a-protocol
                      • fastapi
                      • graphrag
                      • knowledge-graph
                      • langgraph

                      githubmeasured growthOpen source ↗

                      1GitHub starsstable
                    • 18

                      Agent
                      Active

                      Knowli: shared knowledge capture with human review, conflict resolution, cited retrieval, and a simple local-first stack.

                      TypeScriptLicense: Apache-2.0
                      • a2a
                      • fastapi
                      • human-in-the-loop
                      • knowledge-management
                      • langgraph

                      githubmeasured growthOpen source ↗

                      0GitHub starsstable
                    • 19

                      MCP
                      Active

                      Docs + source RAG for Pipe language: semantic search, cited answers, code symbol lookup.

                      GoLicense: MIT

                        mcpmeasured growthOpen source ↗

                        2GitHub starsstable
                      • 20

                        Other
                        Active

                        RAG pipeline and engine built with Codex Sol-5.6 and Antigravity Gemini-3.7-Flash

                        Python
                        • ai
                        • claude-code
                        • claude-code-skills
                        • claude-plugin
                        • embedding

                        githubmeasured growthOpen source ↗

                        1GitHub starsstable
                      • 21

                        Other
                        Active

                        Open-source enterprise AI agent platform for centrally governing agents, tools, memory, RAG, approvals, and durable workflows with FastAPI, LangGraph, LangChain, and LangSmith.

                        Python
                        • a2a-protocol
                        • agent-orchestration
                        • agent-platform
                        • agentic-ai
                        • ai-agents

                        githubmeasured growthOpen source ↗

                        1GitHub starsstable

                      Learning resources

                      Ranked by creation date, newest first; undated entries come last. These resources remain available separately and do not take part in the main tool ranking.

                      1. 1

                        awesome-agentic-ai

                        MCP
                        ActiveOpen source ↗

                        Curated Agentic AI resources: AI agent frameworks, tutorials, courses, projects, MCP tools, research papers, evaluation, security, and production guides.

                        License: CC0-1.0
                        • a2a
                        • agent-framework
                        • agentic-ai
                        • ai-agents
                        • ai-engineering
                        githubResourcemeasured growth
                        2GitHub starsstable
                      2. 2

                        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
                        105GitHub stars+47 (+81.0 %)
                      3. 3

                        Agentic_AI_Engineer

                        Agent
                        ActiveOpen source ↗

                        My complete journey to becoming an Agentic AI Engineer through structured learning, projects, experiments, and production-ready implementations of modern AI systems.

                        Jupyter NotebookLicense: MIT
                        • a2a-protocol
                        • agent-orchestration
                        • ai-guardrails
                        • fastapi
                        • kubernetes
                        githubResourcemeasured growth
                        18GitHub starsstable
                      4. 4

                        lit-review-agent-tools

                        MCP
                        ActiveOpen source ↗

                        🤖 The strongest curated list of open-source AI-agent tools for literature review — 70+ tools across 11 categories (Claude Code skills, deep research, MCP servers, PDF parsing, systematic review). 面向智能体文献综述的最强工具大全。

                        PythonLicense: CC0-1.0
                        • academic-research
                        • ai-agents
                        • awesome
                        • awesome-list
                        • claude-code
                        githubResourcemeasured growth
                        14GitHub stars+1 (+7.7 %)