Agent memory tools: 8 repos in 4 kinds

Help me build a second brain from these 8 GitHub repos: DeusData/codebase-memory-mcp, Graphify-Labs/graphify, garrytan/gbrain, AgriciDaniel/claude-obsidian, tobi/qmd, thedotmack/claude-mem, mem0ai/mem0, gastownhall/beads. Pick by four categories: code graph, knowledge base, session memory, task progress, at most one per category. First check what CLAUDE.md and Claude Code's built-in memory already record, and only add what they can't. Send out three subagents:
- scout (use Haiku): read each README and list the install command, where the data is stored, whether it needs an API key, whether it costs extra tokens, whether it runs a background process, and the license.
- architect: look at my project and CLAUDE.md, pick one per category, and explain why you picked it over the other one in that category.
- verifier: after I restart Claude Code, open a brand-new session with claude -p and ask about a decision we made earlier. For the code graph, ask who calls a specific function. Paste me the raw output.
Show me the commands before installing anything, and install only after I confirm. If you can't read a README, stop and ask me to paste it in. Don't fill anything in from memory.

Opus 5.5 can already run all night on its own. Give it these 8 GitHub repos as a second brain and it feels like cheating: a code graph that indexes the Linux kernel in 3 minutes, a 95K-star memory plugin for Claude Code, and the agent brain where Garry Tan keeps 155K pages.

Reading code (code graph):

• codebase-memory: code only. It builds the graph locally without calling a model, and it’s what we use for our own code graph
• Graphify: graphs your docs, PDFs, images and videos along with the code. 122K stars

Managing notes (knowledge base):

• gbrain: every fact keeps its source, can be corrected or withdrawn, and is shared across your agents. We’ve hooked Gmail and Calendar up to it
• claude-obsidian: turns your sources into linked, cited Obsidian pages, stored locally
• qmd: local search written by Shopify CEO Tobi Lütke. It searches your notes, meeting transcripts and docs on your own machine, with no API key

Remembering chats (session memory):

• claude-mem: installs with one command, compresses every session into a summary, and picks up from it next time
• mem0: a browser extension that shares one memory across ChatGPT, Perplexity and Claude on the web

Tracking long tasks (task progress):

• beads: replaces scattered plan docs with one task dependency graph, so long tasks don’t lose context

Send this to Claude Code and have 3 subagents set it up for you.