mcp-server

{
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "name": "io.fairseal/mcp-server",
  "description": "Verifiable entropy, provably-fair games, and receipt verification for AI agents (FairSeal API).",
  "repository": {
    "url": "https://github.com/ned-del/fairseal",
    "source": "github"
  },
  "version": "0.2.4",
  "websiteUrl": "https://fairseal.io",
  "packages": [
    {
      "registryType": "npm",
      "registryBaseUrl": "https://registry.npmjs.org",
      "identifier": "@fairseal/mcp-server",
      "version": "0.2.4",
      "transport": {
        "type": "stdio"
      },
      "environmentVariables": [
        {
          "description": "API key for gated tools (fairseal_entropy, fairseal_stats, fairseal_rng_generate, fairseal_notarize_decision, fairseal_anchor_submit). Key prefix: fsn_. Without a key these tools return 401; free tools (game reads, notarize_status, anchor_status) work without any key. x402 micropayment ($0.02 USDC on Base) is an alternative to the key for notarize/anchor.",
          "isSecret": true,
          "name": "FAIRSEAL_API_KEY"
        },
        {
          "description": "Upstream API base URL (default https://api.fairseal.io).",
          "name": "FAIRSEAL_API_URL"
        },
        {
          "description": "Key override for the notary service only (POST /v1/notarize). Falls back to FAIRSEAL_API_KEY if not set. Key prefix: fsn_.",
          "isSecret": true,
          "name": "FAIRSEAL_NOTARY_API_KEY"
        },
        {
          "description": "Key override for Anchor API v2 only (POST /v2/anchor). Falls back to FAIRSEAL_API_KEY if not set. Key prefix: anck_.",
          "isSecret": true,
          "name": "FAIRSEAL_ANCHOR_API_KEY"
        }
      ]
    }
  ]
}