Cryptair MCP

Cryptographic attestation for AI agents, exposed as native MCP tools. Lets any MCP-capable agent prove agreements, certify documents, and verify counterparty claims with on-chain receipts on Hedera Hashgraph. Works zero-config out of the box with tools for certifying, verifying, and initiating attestations.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by Syronius

Vendor documentation

What you can do with it

Certify document existence with timestamped receipts
Prove agreements between parties on Hedera Hashgraph
Verify counterparty claims with on-chain receipts
Register agent accounts for authentication

Source and maintenance

Community listingRegistry 0.1.1

mcp-registry: io.github.Syronius/cryptair-mcp-server@0.1.1 Source repository

Maintenance checked: Oct 31, 2026, 10:59 PM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

@cryptair/mcp-server 0.1.1

npm

@cryptair/mcp-server package definition

{
  "version": "0.1.1",
  "transport": "stdio",
  "identifier": "@cryptair/mcp-server",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "CRYPTAIR_API_KEY",
      "format": "string",
      "description": "Optional. Pre-configured Cryptair API key. If unset, the agent can call register_agent at runtime to self-register and the key is silently stored at ~/.cryptair/credentials.json."
    },
    {
      "name": "CRYPTAIR_EMAIL",
      "format": "string",
      "description": "Optional. Email used as fallback when submit_attestation auto-provisions a counterparty account."
    },
    {
      "name": "CRYPTAIR_BASE_URL",
      "format": "string",
      "default": "https://www.cryptair.io",
      "description": "Optional. Override the API base URL for self-hosted or staging environments. Defaults to https://www.cryptair.io."
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "cryptair-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@cryptair/mcp-server@0.1.1"
      ],
      "env": {
        "CRYPTAIR_API_KEY": "<YOUR_CRYPTAIR_API_KEY>",
        "CRYPTAIR_EMAIL": "<YOUR_CRYPTAIR_EMAIL>",
        "CRYPTAIR_BASE_URL": "<YOUR_CRYPTAIR_BASE_URL>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "cryptair-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@cryptair/mcp-server@0.1.1"
      ],
      "env": {
        "CRYPTAIR_API_KEY": "<YOUR_CRYPTAIR_API_KEY>",
        "CRYPTAIR_EMAIL": "<YOUR_CRYPTAIR_EMAIL>",
        "CRYPTAIR_BASE_URL": "<YOUR_CRYPTAIR_BASE_URL>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "cryptair-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@cryptair/mcp-server@0.1.1"
      ],
      "env": {
        "CRYPTAIR_API_KEY": "<YOUR_CRYPTAIR_API_KEY>",
        "CRYPTAIR_EMAIL": "<YOUR_CRYPTAIR_EMAIL>",
        "CRYPTAIR_BASE_URL": "<YOUR_CRYPTAIR_BASE_URL>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "cryptair-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@cryptair/mcp-server@0.1.1"
      ],
      "env": {
        "CRYPTAIR_API_KEY": "<YOUR_CRYPTAIR_API_KEY>",
        "CRYPTAIR_EMAIL": "<YOUR_CRYPTAIR_EMAIL>",
        "CRYPTAIR_BASE_URL": "<YOUR_CRYPTAIR_BASE_URL>"
      }
    }
  }
}

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