Sprixen MCP Server

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)

Claude Code plugin

Installs the MCP server and the Sprixen skill in one step. Set your key first (create one at https://sprixen.com/settings/api):

export SPRIXEN_API_KEY=spx_live_YOUR_KEY

Then, inside Claude Code:

/plugin marketplace add Accelar-labs/sprixen-mcp
/plugin install sprixen@sprixen

Quick start

Claude Code (without the plugin):

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). rules/AGENTS.md is the same guidance for Codex and generic agents; rules/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.