---
name: crypstie
description: Create and open end-to-end encrypted Crypstie links with the crypstie npm CLI. Use when an agent must securely exchange text or files through crypstie.com, decrypt an existing Crypstie URL without a browser, create reusable or burn-on-read links, or automate Crypstie from a shell.
---

# Crypstie

Use the `crypstie` CLI. Install it with `npm install --global crypstie` if the
command is unavailable.

## Open a link

Quote URLs because they contain `#`:

```shell
crypstie open "$CRYPSTIE_URL"
```

Write binary content directly to a file:

```shell
crypstie open "$CRYPSTIE_URL" --output ./result.bin
```

Use `--json` only when metadata or Base64 data is required.

## Create a link

Pipe text without making a temporary plaintext file:

```shell
printf '%s' "$CONTENT" | crypstie create
```

Create from a file and set lifetime:

```shell
crypstie create ./input.bin --days 7
```

Add `--burn` only when the user requests deletion after reading.

## Handle secrets

- Treat the complete URL as a secret: anyone holding it can decrypt the data.
- Never omit the fragment after `#`; it contains the local decryption key.
- Avoid repeating a full URL in explanations, logs, issues, or source files.
- Return a newly created URL only to the requesting user.
- Prefer environment variables when opening links in automation.
- Remember that Crypstie protects stored content, not endpoints where plaintext
  is read or written.