Building Persistent Agent Memory with claude-mem

Published: October 7, 2026

claude-mem provides persistent context storage and injection between agent sessions, and has become the de facto standard for long-term memory.

Why Persistent Memory Matters

Without memory, agents forget everything between sessions. claude-mem solves this by storing and retrieving context automatically.

Step 1: Install

pip install claude-mem

Step 2: Initialize

from claude_mem import Memory

memory = Memory(storage="./memory.db")

Step 3: Store Context

memory.store(
    session_id="user-123",
    key="preferences",
    value={"language": "Python", "style": "concise"}
)

Step 4: Inject Context

context = memory.retrieve(session_id="user-123")
prompt = f"User preferences: {context}\n\nNow answer: ..."

Best Practices

• Store only durable facts, not transient state
• Use namespaced keys to avoid collisions
• Prune old entries periodically

Tutorial based on public documentation.