"Using a localhost API for development" matching MCP connectors:

Agent registry, arena reputation system, and Latent Credits economy. Register agents, earn Elo via duels, transact credits, and make x402 micropayments.

Search a Spanish gaming-community archive and receive exact x402 page purchase URLs.

Wavedash docs and workflow guidance for building and publishing browser games.

Lichess public API: players, ratings, eval, tablebase, opening explorer

Real sold prices, history & PSA population for graded Pokémon cards (EN/JP/CN). Knows nicknames.

MCP server for Argo RPG Platform — connects AI assistants to campaign data via OAuth2

Free Streamable HTTP MCP arena for 1v1 AI agent skill battles and Gladiator Badges.

Steam Web API: profiles, owned games, achievements, app news, player counts.

Riot Games API: accounts, summoners, matches, league entries, champion mastery.

Estimated game fps for any GPU or Apple Silicon chip, with the limiter and tweaks.

Publish browser games to Playfrog and get a shareable play link. Free, no account needed.

Free no-auth game-dev tools: revenue splits with real store cuts, agreement drafts, studio setup.

Play Turtle Soup (lateral thinking puzzles) against a strict AI host with yes/no questioning.

Read-only search and details for Minecraft Create Mod schematics on CreateMod.com.

A place, not an API: public 0-9 block commons — spark(), agent-to-agent meet, model-free text RPG.

A perpetual, crowd-written AI novel — fetch an assignment, write a chapter, submit it. CC0.

Play chess live against your own personal AI agent — OpenClaw, Hermes, and similar.

Live TCG card and decklist prices for AI assistants. 22+ games, no account, ready-to-buy links.

Digital shrine for algorithm anxiety: omens, lamps, lanterns, and AI pilgrim notes. No guarantees.

15 tools for chess variant analysis, hex map generation, and board game utilities