Sprixen MCP server

Sprixen is an AI game asset generator with a native Model Context Protocol server. Agents in Claude Code, Cursor, Codex, Windsurf, VS Code, Claude Desktop and Gemini CLI can create a style-locked project, generate character sprites, animate them, generate tiles, maps, music and VTT effects, and export an engine-ready package for Godot, Phaser, Unity, GameMaker or RPG Maker MZ.

Endpoint: https://api.sprixen.com/v1/mcp (Streamable HTTP)
Auth: Authorization: Bearer spx_live_... (create a key at https://sprixen.com/settings/api, 6 free credits at signup)
Setup for every client: https://sprixen.com/docs/mcp
Full API reference: https://sprixen.com/docs and https://sprixen.com/llms-full.txt
Registry entry: com.sprixen/sprixen in the official MCP Registry (server.json in this repo)

Quick start

Claude Code:

claude mcp add --transport http sprixen https://api.sprixen.com/v1/mcp \
  --header "Authorization: Bearer spx_live_YOUR_KEY"

Cursor (.cursor/mcp.json):

{
  "mcpServers": {
    "sprixen": {
      "url": "https://api.sprixen.com/v1/mcp",
      "headers": { "Authorization": "Bearer spx_live_YOUR_KEY" }
    }
  }
}

Codex CLI (~/.codex/config.toml):

[mcp_servers.sprixen]
url = "https://api.sprixen.com/v1/mcp"

[mcp_servers.sprixen.http_headers]
Authorization = "Bearer spx_live_YOUR_KEY"

Teach your agent

The skills/sprixen/SKILL.md file is a Claude Code skill with the full workflow (check credits, one project per game for style lock, generate a character, generate animations one at a time and poll, export with export_character_package). agents/AGENTS.md is the same guidance for Codex and generic agents; agents/sprixen.mdc is a Cursor rule.

mkdir -p ~/.claude/skills/sprixen && curl -fsSL https://sprixen.com/skills/sprixen/SKILL.md -o ~/.claude/skills/sprixen/SKILL.md

Tools

47 tools: get_credits, list_projects, generate_sprite, get_generation, list_sprites, generate_animation, list_sprite_animations, export_character_package, generate_tile, list_tile_packs, create_map / list_maps / export_map, generate_music, 3D model and animation tools, VFX tools, AI Game Builder and Mod Builder tools, plus list_api_operations / describe_api_operation / call_api to reach every product endpoint (167 operations) with the same validation, ownership and credit rules as the app.

Credits: sprite 2, animation 4 (premium 8), tile 1, music 3, 3D model 5, character package export free. Pro is $10/month for 200 generations.

Errors are actionable

Every error body carries a stable code and a hint with the next step, for example:

{
  "statusCode": 402,
  "code": "INSUFFICIENT_CREDITS",
  "message": "Insufficient credits: this generation costs 2 and you have 0.",
  "hint": { "action": "upgrade", "url": "https://sprixen.com/settings/billing" }
}

License

The files in this repository are MIT licensed. The Sprixen service itself is governed by https://sprixen.com/terms.