goagain - Flesh and Blood Card API & MCP Server

What You Get

Build Apps Fast

REST API with simple HTTP endpoints for cards, sets, keywords, and format legality. JSON responses, CORS enabled.

View API Docs →

Works with Claude & ChatGPT

MCP server for AI assistants. Model Context Protocol compatible with Claude, ChatGPT, and other clients.

Setup Guide →

Always Current

Complete data with all cards, sets, keywords, abilities, and format legality. Updated regularly from official sources.

Check Status →

Quick Start

Docker Run locally


                                docker run
                                -p 8080:8080 ghcr.io/oleiade/goagain:latest

REST API Search for cards


                                curl
                                "https://api.goagain.dev/v1/cards?name=Strike&class=Warrior&limit=5"

REST API Get card details


                                curl
                                "https://api.goagain.dev/v1/cards/enlightened-strike-red"

MCP Add to Claude Desktop

Add this to your Claude Desktop configuration file:

{
  "mcpServers": {
    "flesh-and-blood": {
      "url": "https://mcp.goagain.dev/"
    }
  }
}

Try it Example prompts

Once configured, ask Claude questions like:

"What Ninja attacks have go again?"
"Show me all Briar cards legal in Classic Constructed"
"Compare Enlightened Strike to Razor Reflex"

API Endpoints

Endpoint	Description
`GET /v1/cards`	Search cards with filters (name, type, class, set, pitch, keyword, q, legal_in)
`GET /v1/cards/{id}`	Get card by unique ID or name
`GET /v1/cards/{id}/legality`	Get card legality across all formats
`GET /v1/sets`	List all card sets
`GET /v1/sets/{id}`	Get set details with cards
`GET /v1/keywords`	List all game keywords
`GET /v1/keywords/{name}`	Get keyword description
`GET /v1/abilities`	List all card abilities
`GET /openapi`	OpenAPI specification (YAML)
`GET /health`	Health check with data statistics

Full API documentation with interactive examples →

MCP Tools

The MCP server provides 9 tools for AI assistants to query Flesh and Blood card data, search by text, check format legality, and more.

View all MCP tools

Tool	Description
`search_cards`	Search cards by name, type, class, keywords, or other attributes
`get_card`	Get full details of a specific card by unique ID or name
`search_card_text`	Search for cards by text in their abilities or effects
`get_format_legality`	Check a card's legality status across all formats
`list_sets`	List all Flesh and Blood card sets
`search_sets`	Search for sets by name or code
`get_set`	Get details of a specific set including its cards
`list_keywords`	List all game keywords with their explanations
`get_keyword`	Get the description of a specific keyword

Frequently Asked Questions

Is there a Flesh and Blood card database API?

Yes! goagain provides a free REST API for Flesh and Blood TCG card data. You can search cards, filter by class, type, keywords, and check format legality. No API key or authentication required.

How do I get FaB card data for my project?

Make HTTP requests to api.goagain.dev endpoints. For example, GET /v1/cards?class=Ninja returns all Ninja cards. The API supports JSON responses and CORS, so you can call it directly from web apps.

Can I use Claude to look up Flesh and Blood cards?

Yes! goagain includes an MCP server that works with Claude Desktop and other AI assistants. Add the MCP configuration to Claude, then ask questions like "What Ninja attacks have go again?" or "Show me Briar cards legal in CC."

Does this API require authentication?

No authentication required. The API is free and open for everyone. Rate limiting is applied to ensure fair usage, but there are no API keys or signup needed to start querying card data.