Preloop is the Governance Layer for AI agents: MCP firewall, model gateway, human approvals, cost tracking, event-driven flows
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Updated
Jun 17, 2026 - Python
Preloop is the Governance Layer for AI agents: MCP firewall, model gateway, human approvals, cost tracking, event-driven flows
A universal MCP client with proxying feature to interact with MCP Servers which support STDIO transport.
🔐 Secure authentication proxy for MCP servers with JWT auth, real-time monitoring, and admin dashboard. Production-ready Docker deployment.
MCP 代理,支持直连与反向连接。内网 MCP Server 无需公网 IP 即可被外网访问。FastAPI + SSE + WebSocket。MCP proxy with direct & reverse modes. Expose local MCP servers without public IP. FastAPI + SSE + WebSocket.
Config-driven MCP proxy that adds session-safe file uploads, artifact handling, and robust state and health controls for upstream MCP servers. Also provides code-mode for servers that don't yet support it.
Short-term memory proxy gateway with proactive memory surfacing for AI agents
7-phase security proxy for MCP agents. Defends against tool poisoning, description-code inconsistencies, path traversal, and authentication attacks. 115 tests.
Measure the hidden token bill of MCP and agent tool catalogs.
MCPHub transforms scattered MCP servers into one unified platform. Connect your AI agent to a single endpoint and instantly unlock unlimited tools—no more juggling dozens of server configs. Hot-swap plugins without restart, proxy existing servers in seconds, and let AI generate new tools from natural language.
Hardened MCP SSE server for OliveTin — full proto 1:1 coverage, built-in approval, auth support
Build and use production-ready MCP servers for Claude, Cursor, Windsurf, and more with one-line install and ready-to-run tools
Temporary Minimal Python-based MCP server that allows Claude Desktop to talk to Devin's SSE transport while reliably passing a Personal API Key
Secure MCP gateway that routes, caches, monitors, and controls access to multiple upstream MCP servers
Your Smithers (butler) for MCP token efficiency. Compression proxy that saves tokens on tool results, tool schemas, and server instructions — sits between any AI coding tool (Claude Code, Cursor, Codex, Windsurf, Cline) and your MCP servers. Up to 60% savings depending on content. Zero config. Works with any MCP server.
🛡️ Real-time PII redaction proxy for MCP (Model Context Protocol) — detects and masks 23 entity types before they reach the LLM. Drop-in privacy layer for Claude Desktop with zero-latency regex + NLP detection, AES-256 reversible redaction, and GDPR/HIPAA compliance reporting.
Transparent MCP proxy that gates destructive tool calls behind human approval — elicitation, webhooks, WhatsApp. Drop-in for any MCP server.
Resilient MCP stdio proxy for Microsoft Dynamics 365 Business Central. Fork of microsoft/BCTech BcMCPProxyPython with reconnect, silent token refresh, and surfaced upstream errors.
💬 Build a high-performance, real-time chat application with Django, Go, PostgreSQL, and Next.js for seamless user experiences and fast connections.
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