Search: langchain
Search MCP servers and agent skills by name, description, category or topic — 26 results.
microsoft/markitdown
MCP tool access to MarkItDown -- a library that converts many file formats (local or remote) to Markdown for LLM consumption.
getsentry/sentry-setup-ai-monitoring
Instrument OpenAI, Anthropic, Vercel AI, LangChain, Google GenAI, and Pydantic AI
NameetP/pdfmux
PDF extraction router with built-in MCP server. Classifies each page (digital, scanned, tables) and routes to the best backend (PyMuPDF, Docling, OCR, or optional LLM fallback). Per-page confidence scoring flags low-quality pages and auto-reextracts them — prevents silent RAG failures. Zero config: `pip install pdfmux`. MIT licensed.
PSPDFKit/nutrient-dws-mcp-server
MCP server for the Nutrient DWS Processor API. Convert, merge, redact, sign, OCR, watermark, and extract data from PDFs and Office documents via natural language. Works with Claude Desktop, LangGraph, and OpenAI Agents.
Cohexa-ai/agent-coherence
Coherence guard for shared files: when two agents write the same file, the stale writer is denied instead of silently overwriting, then reacquires and retries. Single-host, TLA+-verified. Install: `uvx --from "agent-coherence[mcp]" stale-write-guard-fs`.
Kzino/vorim-mcp-server
AI agent identity, trust, and audit trail infrastructure. 17 MCP tools: register agents with Ed25519 keypairs, check permissions (sub-5ms), emit tamper-evident audit events, verify trust scores (0-100), delegate credentials, and manage ephemeral agents. IETF Internet-Draft filed (draft-vorim-vaip-00). Works with LangChain, OpenAI, CrewAI, Stripe ACP, and 4 more frameworks. `npx @vorim/mcp-server`.
celiums/celiums-memory
Cognitive memory engine with 5,100+ knowledge modules, circadian rhythm awareness, and emotional state tracking (PAD model). Hybrid search (PostgreSQL + Qdrant vectors + Valkey cache), per-user memory isolation, and multi-protocol support (MCP, REST, OpenAI, LangChain, A2A). `npx @celiums/memory` [Website](https://celiums.io)
gvasile29/qai-consultant
Keyless local MCP server bringing ISTQB / OWASP / IEEE / ISO / EU AI Act QA standards into your AI client: standards-grounded retrieval, deterministic QA effort estimation, and automated QA document quality review (0-100 rubric) plus JUnit/CSV test-results flakiness analysis. `uvx qai-consultant-mcp`
Acacian/aegis
Policy-based governance for AI agent tool calls. YAML policies, approval gates, risk assessment, and audit logging. Cross-platform: LangChain, OpenAI, Anthropic, MCP.
Chimera-Protocol/csl-core
Deterministic AI safety policy engine with Z3 formal verification. Write, verify, and enforce machine-verifiable constraints for AI agents via MCP.
edobusy/agenthold
Shared versioned state store with optimistic concurrency control for coordinating concurrent AI agents. SQLite-backed claim/release locks and append-only audit log.
airblackbox/air-blackbox-mcp
EU AI Act compliance scanner for Python AI agents. Scans, analyzes, and remediates LangChain/CrewAI/AutoGen/OpenAI code across 6 articles with 10 tools including prompt injection detection, risk classification, and trust layer integration. The only MCP compliance server that generates fix code, not just findings.
Ceki-me/mcp-server
Rent real residential Chrome browsers from real humans — per-minute billing ($0.01/min), real fingerprints, residential IPs, no datacenter signals. MCP-native, with SDKs for Python, JS, LangChain, CrewAI, n8n. Crypto payouts.
34892002/bilibili-mcp-js
A MCP server that supports searching for Bilibili content. Provides LangChain integration examples and test scripts.
Nikolife2016/pulsefeed-x402
Trust & safety layer for x402 agent payments: before your agent pays an x402 endpoint, verify it is safe — liveness, scam/anomaly scan (payTo hijack, bait-and-switch, honeypot), and on-chain receiver verification. ~70% of x402 endpoints are dead or scams; only ~half of "healthy" listings work. Free /verify + an open Trust Score. `npx -y pulsefeed-x402-mcp`
User0856/snaprender-mcp
Screenshot API for AI agents — capture any website as PNG, JPEG, WebP, or PDF with device emulation, dark mode, ad blocking, and cookie banner removal. Free tier included.
Data-Everything/mcp-server-templates
One server. All tools. A unified MCP platform that connects many apps, tools, and services behind one powerful interface—ideal for local devs or production agents.
ShinyDapps/l402-kit
Full-stack L402 SDK: server middleware (Express/FastAPI/axum/net/http) + agent client with auto-pay. 4 languages (TypeScript, Python, Go, Rust). MCP server, LangChain integration, budget control. `npx l402-kit-mcp`
HughesCuit/heventure-search-mcp
Free MCP web search server with 5 engines (DuckDuckGo, Bing, Google SerpAPI, Tavily). No API key required. Auto rate limiting, 300s cache, multi-language support. Install: `uvx heventure-search-mcp`.
TradeRouter/trade-router-mcp
Non-custodial Solana swap & limit order engine for AI agents. 21 tools (swap, limit, trailing, TWAP, DCA, combo orders) across Raydium, PumpSwap, Orca, Meteora. Jito MEV-protected execution, Ed25519 server verification, private key never leaves the process. MIT. `npx -y @traderouter/trade-router-mcp`.
debtstack-ai/debtstack-python
Corporate debt structure data for AI agents. Search 250+ issuers, 5,000+ bonds with leverage ratios, seniority, covenants, guarantor chains, and FINRA TRACE pricing.
ndjordjevic/pinrag
RAG for PDFs, YouTube, GitHub repos, Discord exports; index documents and query with citations.
ark-forge/arkforge-mcp
Third-party certifying proxy — sign any HTTP call (AI agents, webhooks, microservices) with an independent Ed25519 signature, RFC 3161 timestamp, and Sigstore Rekor anchor. Works with Claude, GPT-4, Mistral, LangChain, AutoGen, or any HTTP client.
marras0914/agent-toolbelt
20 focused API tools for AI agents: schema generation, text extraction, token counting, regex/cron building, prompt optimization, web summarization, document comparison, and more. TypeScript SDK + LangChain wrappers included.
ankitmalik84/notion-mcp-server
A comprehensive Model Context Protocol (MCP) server for Notion integration with enhanced functionality, robust error handling, production-ready feature.
wishfinity/wishfinity-mcp-plusw
Universal wishlist for AI shopping experiences. Save any product URL from any store to a wishlist. Works with Claude, ChatGPT, LangChain, n8n, and any MCP client.