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maintenanceCoherence 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.
5
10
Apache 2.0
Best LangGraph MCP Servers
LangGraph is a library for building stateful, multi-actor applications with LLMs. It extends LangChain with a flexible graph system to coordinate agent workflows.
Why this server?
Provides a drop-in CCSStore adapter for LangGraph that adds read-side coherence and stale-write prevention via MESI protocol.
Why this server?
Provides a callback handler integration to trace LangGraph workflows for observability.
spanlens-mcpofficial
AlicenseAqualityCmaintenanceMCP-native LLM observability. Query your Spanlens traces, stats, cost anomalies, and savings from Cursor, Claude Desktop, or any MCP client. Open source (MIT).711MITWhy this server?
Allows LangGraph agents to interact with KumoRFM for executing predictive queries, evaluating models, and managing graph metadata.
KumoRFM MCP Serverofficial
AlicenseAqualityAmaintenanceEnables AI assistants to query KumoRFM for predictive analytics on relational data, including graph management, natural language to PQL conversion, and training-free predictions.1233MITWhy this server?
Integrates with LangGraph for stateful agent workflows with conservation-law governance, fleet telemetry, and compute budget enforcement.
AlicenseAqualityBmaintenanceEnables Claude Code to query and control the SuperInstance fleet, including fleet status, conservation law checks, semantic search, and agent registry.87MITWhy this server?
Integrates with LangGraph to create reactive agents that can perform root cause analysis using RCA-MCP tools.
AlicenseAqualityAmaintenanceEnables causal root cause analysis with 55 tools covering causal graph construction, 13 RCA model families, multi-model consensus, and report generation. Works with 9 LLM providers including Claude, Ollama, and OpenAI.656MITWhy this server?
Allows integration with LangGraph for building stateful agent workflows using Zoom Search.
AlicenseBqualityAmaintenanceMCP search and evidence tool for AI agents. Rewrites queries, zooms into source domains, and returns sourced answers with metrics.411MITWhy this server?
Integrates with LangGraph, allowing LangGraph agents to retrieve options market data including gamma curves, GEX by strike, and trade setups.
AlicenseAqualityCmaintenanceEnables AI agents to discover and retrieve options market-structure data (GEX, gamma flip levels, dealer positioning, skew, max pain, expected-move levels, options flow, and ranked trade setups) from Trading Volatility's public API via natural language.171MITWhy this server?
Signs tool calls in LangGraph workflows using LangChain's callback system, allowing cryptographic verification of state graph executions and agent interactions.
AlicenseAqualityBmaintenanceOpen-source MCP server that exposes Signet cryptographic tools over stdio. It provides tools to generate Ed25519 keypairs, sign MCP actions, verify Signet receipts, and compute canonical content hashes for AI agent audit and accountability workflows.437Apache 2.0Why this server?
Supports LangGraph workflows and graphs for integrating Zenodo data into applications.
AlicenseAqualityCmaintenanceA comprehensive MCP server for interacting with Zenodo records, enabling search, retrieval, citation generation, and file downloads.56Apache 2.0
