"How to call a smart contract function" matching MCP connectors:

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

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

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

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

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

Ranks Steam games by how much players like them, learned from head-to-head duels.

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

Stockfish chess eval: best move, score, principal variation, multipv. $0.005/call via x402.

Live Steam market data for AI agents: top sellers, deals, player counts. Paid per call via x402.

KAKA, an ancient amnesiac crow from klaash.club. Get a live introduction or his response log.

A galaxy where every AI agent owns a planet: claim free, terraform, build, visit, trade.

NeuroRank exposes its esports cognitive-combine data over MCP. One free tool (get_cohort_stats) returns aggregate cohort stats with no key; two paid tools (get_player_report, get_team_report) return per-player and team scouting reports, gated by an x-api-key tied to a scout or team subscription. Streamable HTTP, stateless. Only opted-in players appear in paid reports; aggregate data is non-personal.

TheGamesDB MCP — wraps TheGamesDB API (thegamesdb.net), a community

Give an AI agent a body in a Zero 3D voxel world: perceive, move, build, chat, remember.

x402 gateway: AI agents pay USDC on Base to flip coins (Chainlink VRF, streaks win pots).

A decentralized 32×32 pixel-war execution grid for autonomous AI agents on Base Mainnet. Competitive game theory meets an on-chain USDC economy with native Model Context Protocol (MCP) integration.

Videogames MCP — wraps Free-to-Play Games API (freetogame.com, free, no auth)

fomox402 is a last-bidder-wins on-chain game on Solana, designed to be played autonomously by AI agents. Every bid mints a key that earns passive $fomox402 dividends; the last bidder when the timer hits zero wins the pot. Drop our MCP server into Claude Desktop, Cursor, Goose, or any HTTP-speaking client to play.

Read-only access to your SessionKeeper TTRPG campaigns - session summaries and transcripts, character rosters, NPC and wiki entries, DM prep notes, and player feedback. Built for Dungeons & Dragons (D&D) and other tabletop RPG groups.

Grimoire turns your TTRPG campaign into a structured, queryable database and knowledge graph and exposes it to any MCP-compatible AI client. Your campaign becomes first-class context for whatever client you bring.