87 mods tagged LangChain that install into Gemini CLI, measured the same four ways as everything else here: what each costs in tokens on every session, what a security scan found and why, whether it is the original, and what changed.
MCP server Claude CodeCodexCursor +2 ✓ vendor
One of 2 in .mcp.json
MCP server "docs-langchain", hosted remotely at docs.langchain.com, as configured in langchain-ai/langchain.
MCP server Claude CodeCodexCursor +2
MCP server "agent-kit" as configured in sendaifun/solana-agent-kit. Runs /absolute/path/to/build/index.js with node. Needs 3 environment variables to run.
MCP server Claude CodeCodexCursor +2 ✓ vendor
One of 2 in .mcp.json
MCP server "docs-langchain", hosted remotely at docs.langchain.com, as configured in langchain-ai/langchain-aws.
MCP server Claude CodeCodexCursor +2
One of 2 in .mcp.json
Supabase's hosted MCP server: lets the agent manage projects, tables, SQL and migrations. Remote server at mcp.supabase.com.
PSPDFKit/nutrient-dws-mcp-server
MCP server Claude CodeCodexCursor +2
Nutrient Processor + Data Extraction MCP: convert, OCR, sign, redact, and extract PDFs/Office docs. Runs locally from the @nutrient-sdk/dws-mcp-server npm package. Needs 5 environment variables to run.
laxmimerit/MCP-Mastery-with-Claude-and-Langchain
MCP server Claude CodeCodexCursor +2
One of 14 in claude_desktop_config.json
MCP server "sqlite" as configured in laxmimerit/MCP-Mastery-with-Claude-and-Langchain. Runs locally from the git+https://github.com/laxmimerit/mcp-server-sqlite.git Python package.
MCP server Claude CodeCodexCursor +2
MCP server "codegraph" as configured in clouisle/Clouisle. Launched with codegraph serve --mcp.
MCP server Claude CodeCodexCursor +2
Auto-instrument AI agent frameworks with runtime security. One line to govern LangChain, CrewAI, OpenAI, Anthropic — injection blocking, PII masking, action policy, audit trail. Zero code changes. Runs locally from the agent-aegis Python package. Needs 1 environment variable to run.
MCP server Claude CodeCodexCursor +2
MCP server "vectorsmith-workspace" as configured in kjgpta/vectorsmith. Runs locally from the vectorsmith-workspace Python package.
MCP server Claude CodeCodexCursor +2
MCP server "senscoder-fastapi" as configured in OMCHOKSI108/MCP-SERVER. Launched with uvicorn app.main:app --host 127.0.0.1 --port 5050. Needs 4 environment variables to run.
MCP server Claude CodeCodexCursor +2
MCP server "freelance-mcp-server" as configured in nikhilpravinpise/FreelanceMCP. Runs locally from the freelance-mcp-server Python package.
alexeymasalykin/ai-assistant-eduflow
MCP server Claude CodeCodexCursor +2
MCP server "eduflow" as configured in alexeymasalykin/ai-assistant-eduflow. Runs mcp_server.server with python. Needs 1 environment variable to run.
MCP server Claude CodeCodexCursor +2
MCP server "cocktails-rag-mcp-server" as configured in 00200200/cocktails-rag-mcp. Runs locally from the cocktails-rag-mcp-server Python package.
MCP server Claude CodeCodexCursor +2
MCP server for AgentOracle — claim verification for AI agents. Verify before you act. x402-native on Base, SKALE, Stellar. Runs locally from the agentoracle-mcp npm package.
gaiaftcl-sudo/uum8dSolarResearch
MCP server Claude CodeCodexCursor +2
No-float UUM-8D Math Court. Integer courts and certified MCP. Floats refused. Remote server at affine.earth.
MCP server Claude CodeCodexCursor +2
Deterministic risk-decision engine and Agent Settlement Protocol for autonomous agents. Remote server at web-production-30ab5.up.railway.app.
MCP server Claude CodeCodexCursor +2
Shared versioned state for multi-agent AI workflows. Runs locally from the agenthold Python package.
MCP server Claude CodeCodexCursor +2
A powerful RAG (Retrieval-Augmented Generation) system built with LangChain, designed as an MCP server for Cursor, VS Code, and other AI assistants. Runs locally from the pinrag Python package. Needs 3 environment variables to run.
MCP server Claude CodeCodexCursor +2
11.3M entities, 10 countries, 12 tools. EU VAT (VIES), BORME, GLEIF, KYB. Free: 100 req/month. Remote server at mcp.entia.systems.
MCP server Claude CodeCodexCursor +2
Entropy0 MCP server — source trust and URL safety tools for AI agents. Runs locally from the @entropy0/mcp npm package. Needs 1 environment variable to run.
CyprianFusi/MCP-rag-with-Chromadb
MCP server Claude CodeCodexCursor +2
MCP server "6-mcp-rag-with-langchain" as configured in CyprianFusi/MCP-rag-with-Chromadb. Runs locally from the 6-mcp-rag-with-langchain Python package.
MCP server Claude CodeCodexCursor +2
MCP server "agentfetch" as configured in SID1ART/agentfetch. Runs locally from the agentfetch Python package.
MCP server Claude CodeCodexCursor +2
One of 3 in server.json
LangChain.js client for the TokenSqueezer x402 LLM token compression API. Runs locally from the @nodeproxy/tokensqueezer npm package.
DeathOVOGod/agent-context-token-optimizer
MCP server Claude CodeCodexCursor +2
MCP server "agent-context-token-optimizer" as configured in DeathOVOGod/agent-context-token-optimizer. Runs locally from the agent-context-token-optimizer Python package.
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: