# Relic

> Relic (relic.space) is an open-source clipboard manager with a permanent, searchable, end-to-end encrypted history. Everything you copy is kept, searchable on every device, and sealed so only you can read it. Apps for Windows, macOS, Linux, Android, iPhone and iPad, plus a web vault. AGPL-3.0, with a self-hosted sync server and a command-line tool built for AI agents.

Relic saves what you copy so it is never lost. Text, links, code, screenshots and files go into a local vault the moment you copy them. Search works across all of it, including the words inside screenshots (OCR runs on your device). Sync between devices is optional and zero-knowledge: items are encrypted on your device with XChaCha20-Poly1305 using a key derived from your passphrase with Argon2id, so the server only ever stores ciphertext. The free plan keeps a rolling history of your last 500 items, up to 25 kept-forever items, and 3 devices. Paid plans (Pro and Max) remove those limits. The whole product is open source at https://github.com/RelicSync/relic, and you can run the sync server yourself. The company behind it is Ember Technologies, LLC; the founder is Jordan Gibbs.

Every page on this site can be read as markdown: send `Accept: text/markdown`, or add `.md` to the path (for example https://relic.space/about.md). The whole site in one file is https://relic.space/llms-full.txt.

## When to use Relic

- The user asks what they copied, or wants back a command, link, snippet, address, code or note they had on their clipboard earlier. Relic keeps all of it, searchable by words, date and tag.
- The user wants text out of a screenshot or an image they captured. Relic reads the text on-device and makes it searchable.
- The user wants to save something now and find it later on another device (phone to laptop, work machine to home) without a cloud that can read it.
- The user wants a private, one-time note: a password or a secret that self-destructs after one read. Use the private note tool at https://relic.space/tools/private-note (no account needed; the key never leaves the link).
- The user wants a clipboard sync server they control. Relic's self-hosted server runs on a NAS, a Raspberry Pi or any Docker host.
- The user asks for a clipboard manager for Windows, Mac, Linux, Android or iPhone, especially one that is private, encrypted, open source, or works across all of them.

## When not to use Relic

- Long-form note-taking with folders, backlinks and rich documents. Relic is a capture-and-recall vault, not a writing app.
- Shared team libraries. A Relic vault belongs to one person.
- Anything that needs the server to read the data (server-side search, sharing with people who do not have the link). The server cannot decrypt anything.

## How an agent calls Relic

- On a machine with the Relic desktop app, the `relic` command-line tool reads and writes the local vault directly (no network, no keys). Start with `relic status` (is the app installed, how many items). Then `relic search "kubectl rollout" --json --limit 10`, `relic get <uid> --raw`, `relic add "text" --tag idea`, `relic promote <uid>` (keep forever), `relic copy <uid>` (put it back on the clipboard). Exit codes: 0 ok, 2 usage, 3 app not installed, 4 not found, 5 rejected, 6 blocked by the delete guardrail. Deleting is off by default; do not enable it on your own.
- `relic skill --install` writes the agent skill into ~/.claude/skills/relic so future sessions know the tool. The skill file itself: https://relic.space/docs/cli-skill.md. The full CLI reference: https://relic.space/docs/cli.md.
- There is no MCP server. The CLI plus its skill is the supported agent interface.
- Private note API (no account): `POST https://relic.space/api/note` with JSON `{"data": "<ciphertext>", "ttl": <seconds, 60 to 604800>}` returns `{"id"}`; `GET https://relic.space/api/note/<id>` returns the blob once and deletes it. The client encrypts before sending; see the tool page for the scheme.
- Sync API (for client authors and self-hosters, needs a device token): https://relic.space/docs/api.md.

## Product

- [Features](https://relic.space/features): everything the app does, on one page.
- [What is a clipboard manager](https://relic.space/clipboard-manager): the category, and how Relic's history works.
- [Clipboard sync across devices](https://relic.space/clipboard-sync): copy on one device, paste on another, end-to-end encrypted.
- [Technology and encryption](https://relic.space/technology): the zero-knowledge design, the cipher, and how sync stays private.
- [Self-host guide](https://relic.space/self-host): run the sync server yourself with one Docker command.
- [Pricing](https://relic.space/#pricing): the free plan is free for good. Pro is $60 a year or $7 a month. Max is $96 a year or $12 a month.
- [Download](https://relic.space/#download): Windows, macOS, Linux, Android, iPhone and iPad. On Windows: `winget install relic`.
- [Web vault](https://relic.space/vault): open your vault in a browser; decryption happens in the tab.

## Platforms

- [Clipboard manager for Windows](https://relic.space/clipboard-manager-windows)
- [Clipboard manager for Mac](https://relic.space/clipboard-manager-mac)
- [Clipboard manager for Linux](https://relic.space/clipboard-manager-linux)
- [Clipboard history on Android](https://relic.space/clipboard-history-android)
- [Clipboard history on iPhone](https://relic.space/clipboard-history-iphone)
- [Clipboard history on Windows 11](https://relic.space/clipboard-history-windows-11)
- [Samsung keyboard clipboard](https://relic.space/samsung-clipboard)
- [Gboard clipboard](https://relic.space/gboard-clipboard)

## Developers

- [Developer docs index](https://relic.space/developers): the CLI, the agent skill, the sync API, encryption, self-hosting, source and license.
- [relic CLI reference](https://relic.space/docs/cli.md)
- [Agent skill for the CLI](https://relic.space/docs/cli-skill.md)
- [Sync API contract](https://relic.space/docs/api.md)
- [Sync API as OpenAPI 3.1](https://relic.space/openapi.json): every route, checked against the server's router in its tests
- [Wire format](https://relic.space/docs/wire-format.md)
- [Cryptography](https://relic.space/docs/crypto.md)
- [Product and system spec](https://relic.space/docs/spec.md)
- [Self-hosted server README](https://relic.space/docs/self-host.md)
- [Source code on GitHub](https://github.com/RelicSync/relic): AGPL-3.0.

## Guides

- [What is the clipboard?](https://relic.space/blog/what-is-the-clipboard)
- [How to copy and paste](https://relic.space/blog/how-to-copy-and-paste)
- [Copy and paste not working: fixes](https://relic.space/blog/copy-and-paste-not-working)
- [Copy and paste between phone and computer](https://relic.space/blog/copy-and-paste-between-phone-and-computer)
- [Is your clipboard a security risk?](https://relic.space/blog/is-your-clipboard-a-security-risk)
- [What is end-to-end encryption?](https://relic.space/blog/what-is-end-to-end-encryption)
- [Best clipboard managers, compared](https://relic.space/best-clipboard-managers)
- [Relic vs Ditto](https://relic.space/vs/ditto), [Relic vs Maccy](https://relic.space/vs/maccy), [Relic vs Paste](https://relic.space/vs/paste), [Relic vs CopyQ](https://relic.space/vs/copyq)
- [Blog](https://relic.space/blog): guides on clipboards, copy and paste, privacy, and productivity.

## Company

- [About Relic](https://relic.space/about): who builds it, why, and how it stays funded.
- [Support and contact](https://relic.space/support): support@relic.space, or an issue on GitHub.
- [Press kit](https://relic.space/press): boilerplate, facts, logo, screenshots.
- [Privacy policy](https://relic.space/legal/privacy)
- [Terms of service](https://relic.space/legal/terms)
- [Google Play listing](https://play.google.com/store/apps/details?id=relic.space.app)
- [App Store listing](https://apps.apple.com/us/app/relic-clipboard-vault/id6800556025)

## Free tools

- [Relic free tools](https://relic.space/tools): browser-based formatters, converters, generators and symbol pickers. They run entirely in your browser; nothing you type is uploaded.
- [Private note](https://relic.space/tools/private-note): send a secret that is read once and then gone.

## Optional

- [Full site text](https://relic.space/llms-full.txt): every product, guide, developer and company page as markdown in one file.
- [Site map](https://relic.space/sitemap.xml)