"AWS instance metadata service endpoint URL" matching MCP connectors:

Daily TCGplayer market prices, price history since 2024, sold comps by condition, PSA 10 floors and boards (most valuable, movers, all-time highs and lows, sealed product) for Pokemon, One Piece, Lorcana, Riftbound, Gundam and Yu-Gi-Oh cards. Read-only, no API key. Every answer carries the TickerMint page URL for citation.

Chess MCP for Claude — engine analysis, attack maps, game review. One URL, no install.

REG-VaultA

org.regvault.api

Open retro-gaming metadata catalog — 91,000 games, 99 systems. Box art, manuals, screenshots, gameplay previews. Free MCP + REST API.

Chess MCP for Claude: engine analysis, attack maps, game review. One URL, no install.

Game Dev Outsourcing DirectoryA

com.gamedevoutsourcing.www

Search 438 game outsourcing studios by service, country, engine and platform. No API key.

steamwebapiA

io.github.sellrock-de

Live Steam Market API docs, schemas, products, games, markets and endpoint search.

Certification exam practice as a town-building game: AWS, Security+, PMP, CFA, Claude and more.