"Understanding Perplexity" matching MCP servers:

Saves the user's exact words as immutable, SHA-256-hashed captures before anything else, then derives events, entities, context cards, and causal hypotheses — every fact traceable to its verbatim source. Local-first personal memory for Claude Code, Codex, and any MCP client.

A multi-modal AI toolbox based on Model Context Protocol, integrating Zhipu GLM, Pollinations.AI, SiYuan Notes, and Perplexity web search to enable image/video analysis, image/text/audio generation, note management, and intelligent web search.

An open-source memory layer that provides persistent project context and architectural history for AI development tools across multiple platforms and sessions. It enables AI assistants to maintain a shared understanding of codebases while integrating directly with services like Notion for documentation management.

Persistent semantic memory server for Obsidian vaults, enabling AI agents to search, read, write, and explore notes with semantic understanding and incremental indexing.

A TypeScript-based MCP server that implements a simple notes system with resources, tools for creating notes, and prompts for summarization.