# MCP Server

- Name: `io.fairseal/mcp-server`
- Tier: **Indexed** (Crawled from a public source. No check has passed yet, or a check failed.)
- Latest version: 0.2.4, released 2026-09-30
- Website: https://fairseal.io
- Source: https://github.com/ned-del/fairseal
- Trust page: https://mcpvetted.com/t/fairseal-mcp-server

Verifiable entropy, provably-fair games, and receipt verification for AI agents (FairSeal API).

## What it can reach

- Network: none seen
- Files: none seen
- Accounts and secrets: Secret: FAIRSEAL_API_KEY, Secret: FAIRSEAL_NOTARY_API_KEY, Secret: FAIRSEAL_ANCHOR_API_KEY

## Checks

### qualify: pass
Rules 2026-09-29.1, ran 2026-09-30T03:04:08.219Z.

### static: fail
Rules 2026-09-29.1, ran 2026-09-30T03:04:08.219Z.
- [critical] Pairs a secret with an instruction to send data. (install)

## Install

### VS Code
Link: vscode:mcp/install?%7B%22name%22%3A%22mcp-server%22%2C%22type%22%3A%22stdio%22%2C%22command%22%3A%22npx%22%2C%22args%22%3A%5B%22-y%22%2C%22%40fairseal%2Fmcp-server%400.2.4%22%5D%2C%22env%22%3A%7B%22FAIRSEAL_API_KEY%22%3A%22%3CFAIRSEAL_API_KEY%3E%22%2C%22FAIRSEAL_API_URL%22%3A%22%3CFAIRSEAL_API_URL%3E%22%2C%22FAIRSEAL_NOTARY_API_KEY%22%3A%22%3CFAIRSEAL_NOTARY_API_KEY%3E%22%2C%22FAIRSEAL_ANCHOR_API_KEY%22%3A%22%3CFAIRSEAL_ANCHOR_API_KEY%3E%22%7D%7D
```sh
code --add-mcp '{"name":"mcp-server","type":"stdio","command":"npx","args":["-y","@fairseal/mcp-server@0.2.4"],"env":{"FAIRSEAL_API_KEY":"<FAIRSEAL_API_KEY>","FAIRSEAL_API_URL":"<FAIRSEAL_API_URL>","FAIRSEAL_NOTARY_API_KEY":"<FAIRSEAL_NOTARY_API_KEY>","FAIRSEAL_ANCHOR_API_KEY":"<FAIRSEAL_ANCHOR_API_KEY>"}}'
```
```json
{
  "servers": {
    "mcp-server": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@fairseal/mcp-server@0.2.4"
      ],
      "env": {
        "FAIRSEAL_API_KEY": "<FAIRSEAL_API_KEY>",
        "FAIRSEAL_API_URL": "<FAIRSEAL_API_URL>",
        "FAIRSEAL_NOTARY_API_KEY": "<FAIRSEAL_NOTARY_API_KEY>",
        "FAIRSEAL_ANCHOR_API_KEY": "<FAIRSEAL_ANCHOR_API_KEY>"
      }
    }
  }
}
```
1. Click the link, or run the command.
2. VS Code asks you to confirm the server before it starts.

### Cursor
Link: cursor://anysphere.cursor-deeplink/mcp/install?name=mcp-server&config=eyJjb21tYW5kIjoibnB4IiwiYXJncyI6WyIteSIsIkBmYWlyc2VhbC9tY3Atc2VydmVyQDAuMi40Il0sImVudiI6eyJGQUlSU0VBTF9BUElfS0VZIjoiPEZBSVJTRUFMX0FQSV9LRVk%2BIiwiRkFJUlNFQUxfQVBJX1VSTCI6IjxGQUlSU0VBTF9BUElfVVJMPiIsIkZBSVJTRUFMX05PVEFSWV9BUElfS0VZIjoiPEZBSVJTRUFMX05PVEFSWV9BUElfS0VZPiIsIkZBSVJTRUFMX0FOQ0hPUl9BUElfS0VZIjoiPEZBSVJTRUFMX0FOQ0hPUl9BUElfS0VZPiJ9fQ%3D%3D
```json
{
  "mcpServers": {
    "mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@fairseal/mcp-server@0.2.4"
      ],
      "env": {
        "FAIRSEAL_API_KEY": "<FAIRSEAL_API_KEY>",
        "FAIRSEAL_API_URL": "<FAIRSEAL_API_URL>",
        "FAIRSEAL_NOTARY_API_KEY": "<FAIRSEAL_NOTARY_API_KEY>",
        "FAIRSEAL_ANCHOR_API_KEY": "<FAIRSEAL_ANCHOR_API_KEY>"
      }
    }
  }
}
```
1. Click the link to open Cursor.
2. Cursor shows the server and asks you to install it.

### Claude Code
```sh
claude mcp add mcp-server -e FAIRSEAL_API_KEY=<FAIRSEAL_API_KEY> -e FAIRSEAL_API_URL=<FAIRSEAL_API_URL> -e FAIRSEAL_NOTARY_API_KEY=<FAIRSEAL_NOTARY_API_KEY> -e FAIRSEAL_ANCHOR_API_KEY=<FAIRSEAL_ANCHOR_API_KEY> -- npx -y @fairseal/mcp-server@0.2.4
```
1. Run the command in your terminal.
2. Restart or reload Claude Code if it's already open.

### Claude Desktop
```json
{
  "mcpServers": {
    "mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@fairseal/mcp-server@0.2.4"
      ],
      "env": {
        "FAIRSEAL_API_KEY": "<FAIRSEAL_API_KEY>",
        "FAIRSEAL_API_URL": "<FAIRSEAL_API_URL>",
        "FAIRSEAL_NOTARY_API_KEY": "<FAIRSEAL_NOTARY_API_KEY>",
        "FAIRSEAL_ANCHOR_API_KEY": "<FAIRSEAL_ANCHOR_API_KEY>"
      }
    }
  }
}
```
1. Open Settings, then Developer, then Edit Config.
2. Add the block below to claude_desktop_config.json.
3. Restart Claude Desktop.

### Claude (web) (not supported)
1. Claude on the web only connects to remote servers. Use Claude Desktop or Claude Code for this one.