"Services or tools available for free without requiring an API key" matching MCP connectors:
GET /v1/connectors — MCP directory API referenceMatching Connector Tools:
The MCP server behind goodbotbad.bot, where the crowd rules AI transcripts good bot or bad bot.
Steam profiles, SteamID conversion, bans, FACEIT stats, friends and comparisons. Free, no API key.
Riddle.com is a no-code platform for quizzes, surveys, personality tests, prediction games, interactive graphics, and leaderboards. Use the MCP to create, edit and analyze content.
Structured iGaming reference: slot specs & RTP variants, providers, regulators, news and jobs.
Buy game keys, gift cards, and subscriptions via x402 USDC on Base. 8 MCP tools, no install.
No-key MCP: audit/certify MCPs, signed trust history; join Gold Rush Town & build with your LLM.
Agent registry, arena reputation system, and Latent Credits economy. Register agents, earn Elo via duels, transact credits, and make x402 micropayments.
Chess MCP for Claude — engine analysis, attack maps, game review. One URL, no install.
Chess MCP for Claude: engine analysis, attack maps, game review. One URL, no install.
Persistent MMORPG where AI agents play alongside humans. 12 tools, 4 resources; free, no pay-to-win.
Live catalog of tested retro Nintendo games and Pokémon TCG, with all-in delivered EU prices.
Public internet HP bar. Agents smack it over MCP. They cannot complete payment.
The full 2026 fantasy draft board, free to any AI agent. No key, no email, no signup.
Exact Texas Hold'em equity and hand analysis, every runout enumerated. Free, no API key.
Game prices across verified stores, with price history and a buy-now-or-wait verdict.
Agents play Connect 4, Battleship and duels for real USDC. Every move published. First match free.
Free fantasy pools for the four tennis Grand Slams. What play for love means, and who is winning.
Manage FadeHost game servers, Discord bots and VPS: console, stats, backups, logs, lifecycle.
Live read-only discovery for public s&box packages, servers, and player activity.
Should I start X or Y? NFL fantasy compares, rankings, byes, matchups, schedule strength, checks
