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MCP servers tagged middleware
26 live MCP servers tagged "middleware", ranked by trust score. Tags come from package metadata and repository topics, so this list covers servers across every category that work with middleware.
Lilith Zero
⚸ Lilith Zero - Security Middleware for MCP tool calls written in Rust.
Otel Go
OpenTelemetry middleware for Go MCP servers (go-sdk)
S Oauth
Express middleware library for MCP (Model Context Protocol) OAuth authentication
Camel Quarkus
Apache Camel Quarkus
Express Adapter
Express adapter for MCP servers.
webappmcp
WebApp MCP - Model Context Protocol integration for web applications with server-side debugging tools
mcp
Middleware for MCP servers. Intercept or transform requests; pass the rest through.
Ronykit
API Framework supporting REST and RPC.
Agent Control Standard
The open standard for runtime agent control — declarative hooks, policy enforcement, and observability across AI agent frameworks.
Analytics Middleware
Analytics middleware for Model Context Protocol servers
Mcpose
Composable FP (Koa-style) middleware proxy builder for any MCP server
402ok
MCP server middleware for HTTP 402 Payment Required with support for multiple networks including OKX/XLayer
Helmet
Production middleware for MCP servers. Auto transport, content wrapping, health checks, graceful shutdown, auth, rate limiting, structured request logging. Wraps the official Mode…
Actionfence
Embeddable AI action firewall for MCP servers and APIs with JSON policies, signed receipts, spend caps, and simulation mode
Schema Validator
Runtime schema validation middleware for MCP tool inputs and outputs. Compatible with Zod, Valibot, ArkType.
Agent Connector
SDK/runtime for branded MCP packages: declare your server + hooks once, install across the current AI-agent coverage matrix, and collect local-first token telemetry.
Tokesave
The ultimate AI token-saving MCP middleware — compression, caching, injection shield, multi-server routing, and more.
Server Plus
MCP Server Toolkit — create Model Context Protocol servers in minutes with tools, prompts, resources, auth, middleware, logging, metrics, CLI, and testing helpers.
Toolgate
Policy, approval, redaction, timeout, and audit middleware for MCP server tools.
NextMCP
A wrapper of FastMCP that has less boiler plate.
Gt8004 SDK
Official Python SDK for GT8004 — AI agent observability with MCP, A2A, x402 payment tracking. FastAPI, Flask, FastMCP middleware included.
Arcade MCP Ts
TypeScript framework for building MCP servers with built-in OAuth (21 providers), secret injection, middleware, multi-user JWT auth, and worker routes. Wraps @modelcontextprotocol…
X402 MCP Middleware
Express middleware for payment-gated MCP servers — multi-network X402 support with automatic routing, simulation, and JSON-RPC 402 compliance.
Spine
Context Minifier & State Guard — Local-first MCP middleware proxy
Finemcp
Production-grade Model Context Protocol (MCP) framework for Go. Build MCP servers and clients with 16 middleware, typed tools, streaming, circuit breaker, OpenTelemetry, and a zer…
Passport
An high-performance, secure bridge designed to protect remote MCP servers using industry-standard FAPI 2.0 (Financial-grade API) security. It acts as a local stdio server for AI c…