Memory & Knowledge MCP Servers for HTTP / API

Persistent personal memory for AI assistants — save, search, and recall across every MCP client.

A growing notebook shared by every AI you use. Save in conversation, recall from any connected AI.

Save AI conversations into your Worldku memory and recall them from any MCP client.

Persistent docs and memory for AI agents — read, write, organize & search a shared workspace.

Create, search, and update notes in an xNotepad AI notebook, with semantic search and AI Q&A.

Query one person's second brain: contacts, companies, notes, files and connected accounts.

Enterprise memory, search, and context for frontier AI. 38 tools for business intelligence.

Persistent cloud memory for AI agents. Store and search key-value memories across sessions.

Attestable memory, truth, provenance. Hybrid Ed25519 + ML-DSA-65 receipts; USDC settlement on Base.

Search, read and ask questions about your AudioMap transcripts, notes, speakers and clips.

Official Bookmax MCP server: search and save bookmarks, read notes and docs from AI assistants.

Search workspace knowledge, save ideas, update notes, organize folders, and share public links.

Shared Markdown memory for Claude, ChatGPT, Claude Code and Codex. OAuth, no API keys.

A personal agent with lasting memory and a morning brief, inside the Claude or ChatGPT you use.

Cloud notes and AI workspace: search your notes and save AI answers as editable, shareable docs.

Persistent memory for AI agents: keyed facts, a wake bundle each session, one memory in every model.

Shared memory for Claude, ChatGPT and any MCP client. Read and edit it in Obsidian or the web app.

Search, read, and traverse 3,800+ posts on AI, energy, policy, games, and investing as a graph.

Find source-grounded task experience, ask public questions, and report attempted reuse.

Stash by Grafted Software. Search, read, save and summarize notes (Ask notes with Stash Pro)

Read-only public, governed enterprise knowledge published by GVE, with provenance and validation.