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Top 23 Go mcp-server Projects
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GitHub MCP
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bifrost
Fastest enterprise AI gateway (50x faster than LiteLLM) with adaptive load balancer, cluster mode, guardrails, 1000+ models support & <100 µs overhead at 5k RPS.
Project mention: A 9-point eval gain vanished when we deduped train against test | dev.to | 2026-06-15One operational note. We run the post-dedup eval as a batch of LLM-judge calls for the fuzzy-label cases, and route those through Bifrost (https://github.com/maximhq/bifrost) so a single provider rate limit doesn't stall a 4,000-row eval run. It's one config gateway in front of the judge calls, nothing fancy. Failover was the only feature we cared about there.
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slack-mcp-server
The most powerful MCP Slack Server with no permission requirements, Apps support, GovSlack, DMs, Group DMs and smart history fetch logic.
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mcptools
A command-line interface for interacting with MCP (Model Context Protocol) servers using both stdio and HTTP transport.
Project mention: Show HN: Mcp2cli – One CLI for every API, 96-99% fewer tokens than native MCP | news.ycombinator.com | 2026-03-08- https://github.com/f/mcptools
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mcp-language-server
mcp-language-server gives MCP enabled clients access semantic tools like get definition, references, rename, and diagnostics.
Project mention: Typed languages are better suited for vibecoding | news.ycombinator.com | 2025-08-03Interesting, so an LSP MCP like this?: https://github.com/isaacphi/mcp-language-server
Also interesting note on the docs, though, Claude does try to use cargo doc by itself sometimes.
I was actually wondering why GritQL did not have an MCP, this seems like a natural fit. Would be interested to know if this works for you.
I'm always a bit hesitant to add things to the long term context as it feels very finicky to not have it be ignored and having more seems to make it more likely to be ignored. Instead I usually just repeat myself.
Thank you for the answer, seems there is still lots of things to try.
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rulego
⛓️RuleGo is a lightweight, high-performance, embedded, next-generation component orchestration rule engine framework for Go.
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Project mention: MCP's Dark Secret: 5 Hidden Patterns Nobody Teaches You About Context Window Optimization | dev.to | 2026-04-30
The MCP ecosystem has exploded — 84K stars on the official servers repo, specialized MCP servers for reverse engineering, WhatsApp, document search, and codebase RAG. But most developers are using them naively.
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NornicDB
Nornicdb is a distributed low-latency, Graph+Vector, Temporal MVCC with all sub-ms HNSW search, graph traversal, and writes. Using Neo4j Bolt/Cypher and qdrant's gRPC means you can switch with no changes while adding intelligent features like schemas, managed embeddings, reranking+llm, GPU accel, Auto-TLP, Policy-based Memory Decay, and MCP server.
Project mention: Cutting Cypher Query Latency: Streaming Traversal and Query Shape Specialization | news.ycombinator.com | 2026-02-26 -
mcp-proxy
An MCP proxy server that aggregates and serves multiple MCP resource servers through a single HTTP server. (by tbxark)
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Project mention: Your ASP.NET API Already Speaks MCP - It Just Doesn't Know It Yet | dev.to | 2026-03-27
OpenAPI/Swagger JSON approach - Tools like openapi-mcp-server (887 stars) and mcp-link (605 stars) read your swagger.json and dynamically generate MCP tools at runtime. If your API already produces a Swagger document (and most ASP.NET Core APIs do), you point the tool at the JSON and it creates MCP endpoints on the fly.
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marmot
The open-source context layer for your AI. Catalog your tables, topics, queues and APIs then expose real metadata to your AI agents. (by marmotdata)
Project mention: Show HN: Marmot – Single-binary data catalog (no Kafka, no Elasticsearch) | news.ycombinator.com | 2025-12-02 -
Project mention: Show HN: Pgmcp, an MCP server to query any Postgres database in natural language | news.ycombinator.com | 2025-09-17
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hookdeck-cli
CLI for Hookdeck: forward webhooks to localhost (ngrok alternative), manage and query Event Gateway resources (sources, connections, destinations, events), run the MCP server for AI agents. Free for dev.
Project mention: hookdeck-cli VS volley-cli - a user suggested alternative | libhunt.com/r/hookdeck-cli | 2025-12-23 -
Project mention: The OWASP MCP Top 10: A Security Framework for the AI Agent Era | dev.to | 2026-03-18
Schema Quarantine and Tool Pinning -- Verify tool definitions before they reach the agent. Invariant Labs' mcp-scan detects poisoning, rug pulls, and cross-origin escalations. MCPProxy combines BM25-based tool discovery with quarantine capabilities.
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gram
Securely scale AI usage across your organization. Control plane for building, securing and monitoring your agents, mcp and skills.
Project mention: Show HN: Gram Functions – Serverless platform for turning code into LLM tools | news.ycombinator.com | 2025-11-19Hi HN, Georges from the Gram team here. We're really excited to share a major update to Gram, our platform for curating tools for agents, in the form of Gram Functions. Gram initially started out by letting users upload OpenAPI documents and turning them into tools that can be curated into small MCP servers that power your agentic use cases.
We've known for quite some time that many existing REST APIs are simply not suitable as LLM tools and we wanted to solve this problem by letting users simply write code and we would take care of deploying that code for them and hosting MCP servers. We call this Gram Functions and you can get started with it today by running `pnpm create @gram-ai/function` (or `bun create ...`, `npm create ...`).
Under the hood, when you send us code, we provision fly.io machines that run this code behind a Go server listening for tool calls. Once you've deployed, you'll be able to use the Gram dashboard to create a number of MCP servers that have tools generated from this code and any OpenAPI documents you may want to upload. The key thing is you create small MCP servers for your different agents by cherry picking from these sources. This approach to curation helps manage context bloat that massive MCP servers tend to introduce.
Hope you give it a try! The team will be around to respond to questions and feedback.
PS: If you'd like to poke at some code, Gram's code is up here: https://github.com/speakeasy-api/gram
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weather-mcp-server
A lightweight Model Context Protocol (MCP) server that enables AI assistants like Claude to retrieve and interpret real-time weather data. Discuss on Hacker News:
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lumen
Save 30% token costs when using Claude Code, Codex, OpenCode for free - with open source, local semantic search. Works for small and large codebases and monorepos! Enterprise-ready and fully compliant via Ollama and SQLite-vec. (by ory)
Project mention: Show HN: ctx – an Agentic Development Environment (ADE) | news.ycombinator.com | 2026-04-03Does this solve indexing of codebases like Cursor does, or do you still need tools / plugins like Lumen (https://github.com/ory/lumen) for that in order to work in larger codebases without wasting tens of thousands of tokens on tool calls and brute force guessing with grep?
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GitHub repository: https://github.com/VictoriaMetrics-Community/mcp-victoriametrics
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Go mcp-server discussion
Go mcp-server related posts
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The OWASP MCP Top 10: A Security Framework for the AI Agent Era
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Index
What are some of the best open-source mcp-server projects in Go? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | github-mcp-server | 30,639 |
| 2 | bifrost | 5,716 |
| 3 | kubefwd | 4,119 |
| 4 | nunu | 2,575 |
| 5 | slack-mcp-server | 1,661 |
| 6 | mcptools | 1,592 |
| 7 | mcp-language-server | 1,541 |
| 8 | rulego | 1,537 |
| 9 | annas-mcp | 891 |
| 10 | yokai | 835 |
| 11 | NornicDB | 772 |
| 12 | mcp-proxy | 697 |
| 13 | mcp-link | 605 |
| 14 | marmot | 575 |
| 15 | pgmcp | 533 |
| 16 | lsbot | 409 |
| 17 | hookdeck-cli | 359 |
| 18 | mcpproxy-go | 253 |
| 19 | gram | 246 |
| 20 | weather-mcp-server | 245 |
| 21 | melrose | 209 |
| 22 | lumen | 209 |
| 23 | mcp-victoriametrics | 179 |
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