How to give Claude Code persistent memory

By default, Claude Code starts each session fresh. MADB fixes that in one command — here’s the whole flow.

1. Install

claude mcp add madb -- uvx madb-mcp-server

That registers MADB as an MCP memory server. A bundled skill makes Claude reach for it automatically.

2. Store something

Ask Claude to remember a decision, or call remember directly:

remember(content="Chose Postgres over SQLite for the billing service", tags=["architecture"], importance=0.7)

3. Recall in a new session

Quit, reopen Claude Code, and ask what you decided about the billing database. It recalls — because the memory is on disk, not in the session.

4. Ask why

Later, ask why a choice was made and Claude can walk the lineage with trace_cause. Memory stays local; nothing leaves your machine. See the full quickstart for Codex and the Anthropic SDK.