Sibyl Memory Plugin V3 live

The memory layer for AI agents. Lives on your machine, organizes information by what kind of thing it is, and recalls it the way a human would expect. Works with Claude Code, Codex, Cursor, Continue, Hermes, and any Python framework. Free to start, paid plans for power users. Live on PyPI.

What it does, in one sentence

Sibyl Memory Plugin gives your AI agent a long-term memory that persists across sessions, knows the difference between a fact and a conversation, and stays on your computer.

Start here

What you get on the free tier

• Five-tier memory model. Your agent can store conversations, facts, rules, lookups, and archived items separately, and recall each in the way that fits.
• Fast search across everything. Type a phrase, find everywhere the agent has seen it.
• Multiple identities on one machine. The agent can keep separate memory for work vs. side projects vs. team channels, all on the same install.
• 2 MB local storage cap. Enough for a few weeks of real use. The agent warns you as you approach.
• Activation and account on us. Sign in with your wallet, no credit card required.

What unlocks on the paid tier

• No size cap. Use it as long as you want.
• Self-learning. Your agent watches how you work and proposes reusable skills you can teach it with a click. How it works →
• Memory check-up. A health report that surfaces duplicates, stale entries, and anything that looks off. How it works →
• Cross-device sync (Sync plan, coming soon).
• Shared team memory (Team plan, coming soon).

See the full plan comparison →

V3 · payment, auth, account new

The V3 release shipped a full payment + authentication + account-management stack. Pick up here once you've completed the install:

What's live as of V3 (2026-05-16)