Memory & Knowledge MCP Servers for Perplexity

Long-term memory for AI agents: semantic facts, episodic events, and procedural workflows

Search an Obsidian vault by tag, term and wikilink graph. Read-only, deterministic, no embeddings.

Your NoteCube meeting and lecture recordings: search, read transcripts, and write cited documents.

Search your saved Captures and Collections, then save useful findings to Scuba.

Agent memory that refuses to guess: evidence-gated recall, exact-source reads, verifiable deletion.

Search and read your own notes: insights, drafts, book and podcast notes. Read-only, OAuth.

Read and write in your Whatcha diaries, including exchange diaries shared with a partner.