# copypaste.fyi

Type. Get link. Share. A pastebin for humans and agents.

## Product
1. POST text
2. Receive /p/{id}
3. Share that URL. There is no public listing.

## Create
POST /api/pastes
Content-Type: application/json
{"content":"hello","format":"plain_text"}

Closed instance: header X-CopyPaste-Write-Token.

Optional encryption is AES-256-GCM, ChaCha20, XChaCha20, or ML-KEM-768 hybrid. Never RSA.
RSA-260 factorization does not apply. RSA PEM keys are rejected.

## Read
GET /api/pastes/{id}
Encrypted: header X-Paste-Key
Raw: GET /raw/{id}

Missing, burned, and expired are the same 404.

## Agents
Discovery: /.well-known/copypaste.json
Grok Bot skill: /grok-bot.md
CLI: copypaste send --agent "text"
Self-host encrypted store: serve on your box, persist with Upstash Redis, encrypt on send.
Grok connector: POST /mcp (tools create_paste, read_paste). Card: GET /mcp.

Do not put write tokens or encryption keys in argv, query strings, or Open-with URLs.
Encryption is server-side, not E2E.