OSS (AGPL): index a folder of Markdown notes into local SQLite, then expose search/recall/remember tools over MCP so Claude Code/Codex reuse decisions across sessions; hosted option at renor.cloud.
EtherPK’s /Agent (Alt+A) opens a read-only agent chat inline in a markdown/outliner PKMS: you pick context scope (block tree, document, links, or whole-graph tools). BYO keys (Anthropic/OpenAI/Gemini/OpenRouter/Ollama); provider calls stay in-browser; only selected turns save back as outline blocks. Solves cold-start chat and lost answers by anchoring agents in durable notes.