"Kotlin RAG (Retrieval-Augmented Generation) implementation resources" matching MCP connectors:

Engram Obsidian Memory SyncAOAuth

io.github.engram-app

Engram is a persistent, long-term memory layer for AI agents and assistants. Claude, ChatGPT, Grok, Cursor and any MCP client share one memory, stored as plain markdown notes: your knowledge base, second brain and AI context in one place. No extraction step: the memory is the note itself, so you can read exactly what your AI remembers and fix it. Edit your memory in Obsidian (real-time sync), the web app, or on your phone. Hybrid keyword + semantic search (RAG over your notes) finds exact strings like error messages, config keys and IDs. Remote MCP server over Streamable HTTP with OAuth 2.1; notes encrypted at rest. Https://engram.page https://youtu.be/rwnPeZ-8Lqo?is=NI-N7BduydGAiZlF https://github.com/engram-app/Engram

Checks receipts and invoices for AI generation, edits and resubmission, with proof you can re-check.

Verified React chart generation: select, validate, repair, render, and inspect charts through MCP.

NIST 800-171 controls and 800-171A objectives, crosswalks, exact SPRS scoring, POA&M generation.

Race Calendar F1A

app.racecalendar

Anonymous read-only Formula 1 tools, resources, prompts, completion, and interactive dashboard.