# Text Encryption — MCP tool `findutils:text_encryption`

Encrypt text with a password using AES-256-GCM (key derived with PBKDF2-SHA256, 100000 iterations) and return a base64 ciphertext, or decrypt such a ciphertext back to the original text. The base64 blob is salt(16) + iv(12) + ciphertext, compatible with the FindUtils Text Encryption page.

- Category: security
- MCP server: https://mcp.findutils.com/ (Streamable HTTP, no API keys, 120 req/min per IP)
- REST endpoint: POST https://api.findutils.com/api/tools/text-encryption/execute (no API keys, 60 req/min per IP)
- Reference page: https://findutils.com/mcp/text-encryption/
- Same tool on the other surface: https://findutils.com/api/text-encryption/

## Connect

```bash
claude mcp add findutils --transport http https://mcp.findutils.com/
```

Claude Desktop (`claude_desktop_config.json`):

```json
{
  "mcpServers": {
    "findutils": {
      "url": "https://mcp.findutils.com/"
    }
  }
}
```

## Call the tool (verified example)

```bash
curl -X POST https://mcp.findutils.com/ \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "text_encryption",
      "arguments": {
        "text": "hello",
        "password": "hunter2",
        "mode": "encrypt"
      }
    }
  }'
```

## Input schema

| Argument | Type | Required | Description |
|---|---|---|---|
| `text` | string | yes | encrypt: the plaintext. decrypt: the base64 ciphertext produced by this tool. |
| `password` | string | yes | The password (passphrase) used to derive the AES key. |
| `mode` | string (encrypt \| decrypt) | no | Operation. Default: encrypt. Default: `"encrypt"`. |

Example arguments (verified):

```json
{
  "text": "hello",
  "password": "hunter2",
  "mode": "encrypt"
}
```

## Also a REST endpoint

```bash
curl -X POST https://api.findutils.com/api/tools/text-encryption/execute \
  -H "Content-Type: application/json" \
  -d '{
    "text": "hello",
    "password": "hunter2",
    "mode": "encrypt"
  }'

# Parameter schema
curl https://api.findutils.com/api/tools/text-encryption
```

Full REST reference: https://findutils.com/api/text-encryption/ · OpenAPI 3.1 spec: https://findutils.com/api/openapi.json

---
Full catalog: POST https://mcp.findutils.com/ with method `tools/list` · https://findutils.com/mcp/ · https://findutils.com/llms.txt