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Nexus: An Open-Source AI Router for Governance, Control and Observability
- mitchwainer 1y agoGrafbase just launched Nexus, an open-source AI Router that unifies MCP servers and LLMs through a single endpoint. Designed for enterprise-grade governance, control, and observability, Nexus helps teams manage AI complexity, enforce policies, and monitor performance across their entire stack. Built to work with any MCP server or LLM provider out-of-the-box, Nexus is designed for developers who want to integrate AI with the same rigor as production APIs.
- CptanPanic 1y agoSounds like litellm which I use, I wonder how it compares?
- vid 1y agoThere is also https://github.com/maximhq/bifrost https://github.com/maximhq/bifrost which apparently overcomes some performance issues of litellm and is easy to get going.
- tomhoule 1y agoYeah they definitely belong in the same space. Nexus is an LLM Gateway, but early on, the focus has been on MCP: aggregation, authentication, and a smart approach to tool selection. There is that paper, and a lot of anecdotal evidence, pointing to LLMs not coping well with a selection of tools that is too large: https://arxiv.org/html/2411.09613v1 https://arxiv.org/html/2411.09613v1 So Nexus takes a tool search based approach to solving that, among other cool things. Disclaimer: I don't work on Nexus directly, but I do work at Grafbase.
- fbjork 1y agoFounder of Grafbase here. Here are a few key differentiators vs LiteLLM today: - Nexus does MCP server aggregation and LLM routing - LiteLLM only does LLM routing - The Nexus router is a standalone binary that can run with minimal TOML configuration and optionally Redis - LiteLLM is a whole package with dashboard, database etc. - Nexus is written in Rust - LiteLLM is written in Python That said, LiteLLM is an impressive project, but we're just getting started with Nexus so stay tuned for a steady barrage of feature launches the coming months:)
- SparkyMcUnicorn 1y agoWhat's the difference between "MCP Server Aggregation" and the litellm_proxy endpoint described here? https://docs.litellm.ai/docs/mcp https://docs.litellm.ai/docs/mcp
- tomhoule 1y agoThe main difference is that while you can get Nexus to list all tools, by default the LLM accesses tools by semantic search — Nexus returns only the relevant tools for the what the LLM is trying to accomplish. Also, Nexus speaks MCP to the LLM, it doesn't translate like litellm_proxy seems to do (I wasn't familiar with it previously).
- evolve2k 1y agoAs in Torment Nexus? Wow.
- fbjork 1y agoHa
- bentogrizz 1y agoThis is cool
- fbjork 1y agoWhat are you building?
- mbrumlow 1y agoI thought it was a phone :/, for developers.
- fbjork 1y agoThat phone was discontinued:)
- owenthejumper 1y agoAnother proxy?
- fbjork 1y agoMCP aggregation is one of the big differentiators
- barbazoo 1y agoI'm curious, what issue does that solve? I'm only working on agents that make tool calls via HTTP in a home baked way but I can't imagine how resolving the tools from 2 MCP servers is harder than 1.
- fbjork 1y agoThe issue is when you have many MCP tools the context becomes too large for the LLM. So Nexus indexes all the tools and lets you search for the right tool and then execute it.
- barbazoo 1y agoThanks, I think I get it now. In our case I've dealt with this problem by refactoring the monolithic agent into smaller agents, smaller, more specific prompts, fewer, more relevant tools. We've found that monolithic agents just don't perform that well.
- barbazoo 1y ago> There is no problem that can't be solved by another level of indirection. David Wheeler
- makita34 1y agoSeems quite similar to the commercial nexos.ai platform, which also focuses on routing, governance, and observability for AI workloads, but as a proprietary solution rather than open source
- fbjork 1y agoFrom what I can tell they don’t offer a self-hosted router?
- johntash 1y agoIt looks like you're planning on monetizing this (which is totally fine!), do you have any plans on what the enterprise version would do differently?
- davinoishi 1y ago[dead]
- altcognito 1y agohttps://www.sonatype.com/products/sonatype-nexus-pro/trial https://www.sonatype.com/products/sonatype-nexus-pro/trial Nexus name already has a taker