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Show HN: Self-hosted MCP server for SQL, SSH, and FAISS indexing

https://github.com/mattv8/ragtime
3•mattv8•2h ago
RAGtime is a self-hosted MCP server and FAISS/PGVector manager that lets AI assistants run real operations on your infrastructure: SSH commands, SQL queries through SSH tunnels, git repo indexing, filesystem searches. It connects Claude, OpenAI, or Ollama to your environment via both MCP protocol and OpenAI-compatible chat completions API.

I originally built this over Christmas break as a "self-serve business intelligence" tool to stop fielding repetitive coworker questions ("write me a query for X," "where's the logic for Y?") but now it's morphed into a dev tool as well. I couldn't find anything that centralized these tools and served them over chat in one place.

I've been using it daily (via MCP) for work and it's been such a huge development accelerator for me. I want to share what I've built with the community, get feedback, or if you wish, contributions. Happy to answer questions about the architecture or use cases.

(You can stop here, unless you want more technical details...)

Tools: The agent gets access to configurable tools you define: SSH connections to servers (run commands, check logs, restart services), database queries via SSH tunnels (PostgreSQL, MySQL, MSSQL) with parameterized queries to prevent injection, and vector search over your indexed content. Each tool is defined in a config with connection details, and you can enable/disable them per use case. The database tools return structured results the LLM can reason about. SSH tools stream output for long-running commands. There's also a Python REPL tool for data manipulation when the LLM needs to transform query results.

On the RAG/indexing side: Chunking uses Chonkie's CodeChunker with Magika (Google's ML model) for automatic language detection, then tree-sitter for AST-aware splitting that respects semantic boundaries (functions, classes, blocks). Each code chunk gets a header with file path and import context so the LLM knows where it came from. Retrieval uses MMR (Maximal Marginal Relevance) to reduce near-duplicate results, balancing relevance with diversity via a configurable lambda parameter. FAISS indexes are portable and can be exported.

Men getting twice as much plastic surgery, new data shows

https://lifestyle.inquirer.net/562688/men-getting-twice-as-much-plastic-surgery-new-data-shows/
1•PaulHoule•1m ago•0 comments

Show HN: HN Digest – AI Summaries and Insights for Hacker News Threads (BYOK)

https://github.com/davkap92/hn-digest
1•davkap92•2m ago•0 comments

Bobby's Rules for Brainstorming

https://bobbylox.com/blog/bobbys-rules-for-brainstorming/
1•bobbylox•2m ago•1 comments

Deep research in ChatGPT is now powered by GPT-5.2

https://twitter.com/OpenAI/status/2021299935678026168
1•simianwords•3m ago•0 comments

AI in China and the United States

https://www.oreilly.com/radar/ai-in-china-and-the-united-states/
1•only_in_america•4m ago•0 comments

Code has _always_ been the easy part

https://laughingmeme.org//2026/02/09/code-has-always-been-the-easy-part.html
1•rmason•4m ago•0 comments

I built a complete suite of 22 MCP servers to boost developer productivity

https://github.com/fedcal/Tech-MCP
1•federicocalo98•5m ago•1 comments

What the philosophy of biology was [pdf]

https://gbragafibra.github.io/papers/Nicholson2015_organicism.pdf
1•Fibra•5m ago•0 comments

Show HN: Aps – pull and sync AGENTS.md and Agent Skills across codebases

https://github.com/westonplatter/agentic-prompt-sync
1•westonplatter0•6m ago•0 comments

Devtoys: Collection of handy online tools for developers, with improved UX

https://devtoys.pages.dev/
1•alexander2002•6m ago•0 comments

What makes biological organisation teleological? [pdf]

https://gbragafibra.github.io/papers/Mossio_Bich2014_teleology_bioorganization.pdf
1•Fibra•6m ago•0 comments

The Missing GitHub Status Page

https://mrshu.github.io/github-statuses/
1•todsacerdoti•9m ago•0 comments

Biological organisation as closure of constraints [pdf]

https://gbragafibra.github.io/papers/Mont%C3%A9vil_Mossio_2015_closure.pdf
1•Fibra•10m ago•0 comments

Show HN: AI Flag Bot: Community-driven tool to detect and block AI accounts on X

https://aiflagbot.com
1•lifesaverluke•13m ago•0 comments

Jekyll – a brilliant engine for your blog

https://blog.tomaszdunia.pl/blog-jekyll-github-eng/
1•to3k•16m ago•1 comments

The Falkirk Wheel [the only rotating boat lift]

https://www.scottishcanals.co.uk/visit/canals/visit-the-forth-clyde-canal/attractions/the-falkirk...
1•scapecast•16m ago•1 comments

Unlock the power of real time Google searches and trends

https://daily-trending.org
1•azamsayeedit•17m ago•1 comments

Ask HN: Is there a "canon" of great CLI typography?

2•joshuawheelock•20m ago•0 comments

Rust engineer – low-latency browser and agent infra – €100K–€170K and equity

https://twin.so/
1•gregherbelux•20m ago•1 comments

Archive.today CAPTCHA page executes DDoS; Wikipedia considers banning site

https://arstechnica.com/tech-policy/2026/02/wikipedia-might-blacklist-archive-today-after-site-ma...
3•gyrovague-com•20m ago•0 comments

Show HN: Niko Table – Composition-based table built on Shadcn/UI and TanStack

https://niko-table.com/
1•xcution•21m ago•1 comments

I Just Returned from China. We Are Not Winning

https://www.nytimes.com/2026/02/10/opinion/china-ai-ev-trump.html
5•sizzle•21m ago•1 comments

Standardizing HLSL

https://devblogs.microsoft.com/directx/standardizing-hlsl/
1•pjmlp•22m ago•0 comments

Compensation as a Reflection of Values (2021)

https://oxide.computer/blog/compensation-as-a-reflection-of-values
1•microsoftedging•22m ago•0 comments

State of HLSL: February 2026

https://www.abolishcrlf.org//2026/02/10/HLSLState.html
1•pjmlp•23m ago•0 comments

Show HN: Python TUI to Automate macOS VM Creation on Proxmox

https://github.com/lucid-fabrics/osx-proxmox-next
1•wmehanna•23m ago•0 comments

The Computer Chronicles – Artificial Intelligence (1985) [video]

https://www.youtube.com/watch?v=7Uz3HYfCIGc
2•tzury•23m ago•0 comments

Setting Up Zed

https://ljb.fyi/setting-up-zed/
1•todsacerdoti•23m ago•0 comments

Cubans Sent to U.S. Prison at Guantánamo Are Returned to Cuba

https://www.nytimes.com/2026/02/10/us/politics/cubans-sent-to-us-prison-at-guantanamo-are-returne...
5•jbegley•25m ago•0 comments

Surety Industry Makes Progress in Reaching Goal of Digitized Bonding (2022)

https://www.suretybondquarterly.org/2022/09/16/surety-industry-makes-progress-in-reaching-goal-of...
1•walterbell•25m ago•0 comments