{"name":"io.fairseal/mcp-server","slug":"fairseal-mcp-server","title":null,"description":"Verifiable entropy, provably-fair games, and receipt verification for AI agents (FairSeal API).","url":"https://mcp.market/server/fairseal-mcp-server","rating":null,"grade":"B","score":80,"certified":false,"status":"active","category":"other","tags":[],"presence":{"score":30,"stars":0,"forks":0,"downloads_week":238,"last_push_at":"2026-09-09T14:17:03.000Z","license":"MIT"},"uptime":null,"claimed":false,"transport":"npm","callable_via_gateway":false,"default_price_micros":0,"repository":"https://github.com/ned-del/fairseal","website":"https://fairseal.io","version":"0.2.4","remotes":[],"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"}]}],"tools":[],"scan":null,"grade_history":[],"reviews":[]}