ncrypted MCP Server

Install ncrypted MCP server

claude mcp add ncrypted -e NCRYPTED_WALLET_PRIVATE_KEY='<ncrypted-wallet-private-key>' -- npx -y @seidl-family/ncrypted-mcp

{
  "mcpServers": {
    "ncrypted": {
      "command": "npx",
      "args": [
        "-y",
        "@seidl-family/ncrypted-mcp"
      ],
      "env": {
        "NCRYPTED_WALLET_PRIVATE_KEY": "<ncrypted-wallet-private-key>"
      }
    }
  }
}

{
  "mcpServers": {
    "ncrypted": {
      "command": "npx",
      "args": [
        "-y",
        "@seidl-family/ncrypted-mcp"
      ],
      "env": {
        "NCRYPTED_WALLET_PRIVATE_KEY": "<ncrypted-wallet-private-key>"
      }
    }
  }
}

{
  "servers": {
    "ncrypted": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@seidl-family/ncrypted-mcp"
      ],
      "env": {
        "NCRYPTED_WALLET_PRIVATE_KEY": "<ncrypted-wallet-private-key>"
      }
    }
  }
}

{
  "mcpServers": {
    "ncrypted": {
      "command": "npx",
      "args": [
        "-y",
        "@seidl-family/ncrypted-mcp"
      ],
      "env": {
        "NCRYPTED_WALLET_PRIVATE_KEY": "<ncrypted-wallet-private-key>"
      }
    }
  }
}

Context tax

Connecting this server adds ~902 tokens of tool definitions to every model turn (lean, 4 tools). Measured 2026-10-19 via its hosted endpoint; o200k tokenizer, worst case for clients that load all tools up front. How we measure

Input prices as of 2026-10-06. Excludes your own prompt and output.

Tools (4)

• ncrypted_create303 tok

  Store a password, API key or sensitive note as a one-time link that self-destructs after a single read. The first 3 per day are free (TTL up to 24h); after that each costs 0.005 USDC, paid via x402 on Base (your MCP client must support x402). Share the link with a person or another agent; never echo the secret in chat. Returns { link, id, receiptToken, expiresAt }; keep id and receiptToken to check delivery (ncrypted_status) or revoke the link (ncrypted_burn). Hosted mode: this server encrypts the secret for you, so it sees the plaintext briefly over TLS (never stored or logged). For end-to-en

• ncrypted_burn208 tok

  Permanently destroy an unread secret you created, so its link stops working (e.g. it was sent to the wrong place or is no longer needed). Irreversible. Returns { burned: true } if it was destroyed, or { burned: false, status } if there was nothing left to destroy because it was already read, burned or expired; if it was already read, the recipient has the value, so rotate the credential. Only works for secrets you created (needs their receiptToken). Free.

• ncrypted_read204 tok

  Open an ncrypted link (https://.../s/{id}#{key}) and return the secret. This destroys it permanently. Free. Only use the value for the task at hand and do not repeat it in chat. To check whether someone opened a link you created, use ncrypted_status instead (it doesn't consume anything). Hosted mode: this server decrypts the secret for you, so it sees the plaintext briefly over TLS (never stored or logged). For end-to-end, zero-knowledge encryption run the local MCP server `npx -y @seidl-family/ncrypted-mcp` instead.

• ncrypted_status185 tok

  Check whether a secret you created has been opened yet, without consuming it. Returns { status, expiresAt, readAt? } where status is pending (not opened), read, burned or expired. Use it to confirm delivery, or before deciding to ncrypted_burn a link. Only works for secrets you created (needs their receiptToken); to open a link, use ncrypted_read. Free.

Freshness

Not enough public signals yet to judge maintenance.

1. Last commit (default branch)

   2026-10-16 · 2d ago · GitHub

2. Latest release

   no data · GitHub

3. Package published

   no data · npm/PyPI

4. Registry entry updated

   2026-10-16 · 2d ago · official registry · v0.2.2

How it compares in Security

Against the most-starred security servers we index. Token cost is per model turn, measured from each server's live tool list.