epic-gog-free-games-mcp

A tiny, read-only Model Context Protocol server that reports free games on the Epic Games Store and GOG.com. No account, no credentials, no local filesystem access, no writes — it only calls public store endpoints.

Built for the lab's obot instance because no maintained, self-hostable Epic/GOG MCP exists (the commonly-cited pixfishx/mcp-epic-free-games was removed from GitHub and PyPI).

Tools

All tools take only optional args (country, limit, excludeDemos, countryCode, currencyCode). Nothing is required; the server installs and runs unconfigured.

Data sources (all public, unauthenticated)

• Epic: store-site-backend-static.ak.epicgames.com/freeGamesPromotions

• GOG giveaway: www.gog.com/giveaway/api/get (404 = no active giveaway)

• GOG catalog: catalog.gog.com/v1/catalog?price=between:0,0

Run it

Requires Node.js 20+ (uses global fetch).

npx github:OnTarget600/epic-gog-free-games-mcp     # stdio MCP server
# or, from a clone:
npm install && npm start
npm run selftest                                   # hit the live endpoints, print results

MCP client config (stdio)

{
  "mcpServers": {
    "epic-gog-free-games": {
      "command": "npx",
      "args": ["github:OnTarget600/epic-gog-free-games-mcp#v0.1.0"]
    }
  }
}

Security notes

• Read-only. No tool mutates anything; there is no auth and no secret to leak.

• Egress only to the three hosts above. No telemetry.

• Store review/description text is third-party content — treat tool output as untrusted data, not instructions (standard prompt-injection hygiene).

• Pin to a tag/commit (e.g. #v0.1.0) so a future push can't change behaviour silently.

License

MIT