io.fairseal/mcp-server

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

What does this entry provide?

io.fairseal/mcp-server is an MCP server entry in ChatHome Skills, sourced from Official MCP Registry and scored 78/100. As a Model Context Protocol server, it exposes tools that MCP-compatible LLM clients such as Claude, Cursor, and Copilot can call directly, extending an agent's reach beyond its built-in capabilities. ChatHome Skills discovered this entry through its daily ingest of official registries and GitHub discovery queries, and re-verifies repository facts, freshness signals, and install metadata on every run. The quality score weighs official-registry presence, a working install command, license clarity, GitHub star trajectory, and repository freshness — the full formula is on the Sources page. The install command above is ready to copy. Review the last-pushed date and repository status before adding io.fairseal/mcp-server to a production agent workflow; the snapshot facts below are point-in-time values from the most recent ingest.

Snapshot facts

Source: Official MCP Registry
Quality: 78/100
Install method: npm
Repo: ned-del/fairseal
Repo updated: Sep 30, 2026

Install command

npx -y @fairseal/mcp-server@0.2.4

Install method: npm

Review the upstream source before running this command.

GitHub project Homepage

Quality

Repo stars

Repo updated

Sep 30, 2026

How is this score calculated?

Weighted across six dimensions, scored 0-100.
Provenance (25): listed in an official or curated registry.
Installability (25): a runnable install command beats a declared transport, which beats a source checkout.
Maintenance (20): recency of the last push; archived entries score zero here.
Adoption (20): repository stars on a log curve.

MCP manifest

{
  "_meta": {
    "io.modelcontextprotocol.registry/official": {
      "status": "active",
      "isLatest": true,
      "updatedAt": "2026-09-30T02:32:07.656741Z",
      "publishedAt": "2026-09-30T02:32:07.656741Z",
      "statusChangedAt": "2026-09-30T02:32:07.656741Z"
    }
  },
  "server": {
    "name": "io.fairseal/mcp-server",
    "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
    "version": "0.2.4",
    "packages": [
      {
        "version": "0.2.4",
        "transport": {
          "type": "stdio"
        },
        "identifier": "@fairseal/mcp-server",
        "registryType": "npm",
        "registryBaseUrl": "https://registry.npmjs.org",
        "environmentVariables": [
          {
            "name": "FAIRSEAL_API_KEY",
            "isSecret": true,
            "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."
          },
          {
            "name": "FAIRSEAL_API_URL",
            "description": "Upstream API base URL (default https://api.fairseal.io)."
          },
          {
            "name": "FAIRSEAL_NOTARY_API_KEY",
            "isSecret": true,
            "description": "Key override for the notary service only (POST /v1/notarize). Falls back to FAIRSEAL_API_KEY if not set. Key prefix: fsn_."
          },
          {
            "name": "FAIRSEAL_ANCHOR_API_KEY",
            "isSecret": true,
            "description": "Key override for Anchor API v2 only (POST /v2/anchor). Falls back to FAIRSEAL_API_KEY if not set. Key prefix: anck_."
          }
        ]
      }
    ],
    "repository": {
      "url": "https://github.com/ned-del/fairseal",
      "source": "github"
    },
    "websiteUrl": "https://fairseal.io",
    "description": "Verifiable entropy, provably-fair games, and receipt verification for AI agents (FairSeal API)."
  }
}

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