# Yu-Gi-Oh! TCG — full knowledge bundle

Official source directory for LLM consumption. TCG Online has not
indexed this game's publisher rules or card text. See its llm.txt index.

## MCP server

Prefer the TCG Knowledge MCP server over scraping these files when your
client speaks MCP. It is read-only: comprehensive rules, errata, glossaries,
tournament policy, and card catalogs. Start with list_games.

Human guide: https://tcg.online/mcp
Remote HTTP: POST https://api.tcg.online/mcp (streamable HTTP, JSON-RPC, protocol 2025-06-18).
Staging host: https://staging-api.cardgoat.org/mcp
Remote config: { "mcpServers": { "tcg-knowledge": { "url": "https://api.tcg.online/mcp" } } }
Source: https://github.com/TheCardGoat/the-card-goat-online (tools/tcg-mcp-server/)
Stdio (local, requires Bun): { "mcpServers": { "tcg-knowledge": { "command": "bun", "args": ["tools/tcg-mcp-server/server.ts"] } } }
HTTP (self-host): bun tools/tcg-mcp-server/server.ts --http --port 8180
  then POST JSON-RPC to http://127.0.0.1:8180/mcp. GET /healthz for liveness.
Rate limited at 60 requests/min with burst 30.
Tools: list_games, list_rules_documents, search_rules, read_rules_document, search_glossary, search_cards, get_card, list_card_sets.

## Comprehensive Rules

# Comprehensive Rules

Status: official source links only; text is not indexed by TCG Online.

Official TCG rulebook link only. TCG Online cannot search or quote Yu-Gi-Oh! rules through MCP.
- Official Yu-Gi-Oh! TCG rulebook: https://www.yugioh-card.com/eu/play/tcg-rulebook/; checked 2026-09-24


## Glossary

# Glossary

Status: not tracked in the tcg-engines repository.

No Yu-Gi-Oh! glossary is indexed by TCG Online.


## Errata & Rulings

# Errata & Rulings

Status: not tracked in the tcg-engines repository.

No Yu-Gi-Oh! errata or rulings are indexed by TCG Online.


## Tournament Policy

# Tournament Policy

Status: not tracked in the tcg-engines repository.

Tournament policy text is not indexed.


## Cards

Card text is not indexed by TCG Online; see cards.txt.
- Official Yu-Gi-Oh! TCG card database: https://www.db.yugioh-card.com/yugiohdb/TCG