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Yash Kanadhia edited this page Jun 1, 2026 · 4 revisions

FAQ

General

  • Q: What is Zeref OS in one sentence?
    A: A persistent, harness-agnostic context and memory engine for AI projects, stored in local-first markdown files with privacy on by default.

  • Q: Is this an agent or a standalone program?
    A: No – Zeref OS isn’t a running service. It’s a framework that wraps around existing LLM tools (Claude, Cursor, etc.) to give them persistent memory. It relies on those tools to execute the prompts defined by Zeref.

  • Q: Is Zeref OS open source?
    A: Yes, it’s MIT-licensed (see LICENSE), and free to install. You bring your own LLM models; we don’t provide any in the repo.

  • Q: Does it send my data to the cloud or OpenAI?
    A: No. By default, all data is local. External tool calls or sharing require explicit user setup (via SHARING_POLICY.md). Even if you connect an LLM API, Zeref itself does not phone home.

Setup

  • Q: How long does setup take?
    A: About 5 minutes. Running /zeref-os:start conducts an interactive setup, creating 7 configuration files (project name, budget, privacy mode, etc.) and initializing memory/. The CLI commands (/start, /stop) are the main interface.

  • Q: What if I stop the interview midway?
    A: Zeref OS will boot in read-only mode until the missing parts are completed (per the spec in MIGRATION.md). You can restart /zeref-os:start to resume.

  • Q: Do I need any special tools or subscriptions?
    A: No. Zeref OS itself has no paid components. You do need access to an LLM (e.g. an API key or a local model) in your chosen harness.

Privacy

  • Q: What is the default privacy mode?
    A: abstract. In this mode, Zeref REDACT.md rules will scrub PII from outputs, replacing details with high-level descriptions.

  • Q: Can I ever store exact secret data?
    A: Yes. Setting mode: exact in the root PRIVACY.md disables abstraction. Use this if you explicitly want to log an exact password or email. Use with caution.

  • Q: How do I ensure nothing ever leaves my project?
    A: Set mode: local-only in PRIVACY.md. In this mode, all external API calls and syncs are blocked. Any attempt to write to memory/sync/outbound/ or push to a parent will be denied.

  • Q: Why are there three files (PRIVACY, REDACT, SHARING_POLICY)?

    • PRIVACY.md = global mode and policy (abstract/exact/local-only).
    • REDACT.md = specific tokens or classes to sanitize.
    • SHARING_POLICY.md = which connectors (e.g. Slack, GitHub) are allowed to see data (defaults to none).

Zeref OS

Getting Started

Architecture

Reference

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