AgentIndex icon
AgentIndex
STS2MCP logo
STS2MCP
★ 526
vs
ncp logo
ncp
★ 100

STS2MCP vs ncp

STS2MCP: STS2MCP is an experimental research mod for Slay the Spire 2 that enables AI agents to play the game. It exposes game state and actions via a localhost REST API, with an optional MCP server for Claude Desktop/Claude Code integration. It supports both singleplayer and multiplayer co-op, and has been tested against STS2 v0.99.1.; ncp: NCP (Natural Context Provider) is an MCP aggregator that consolidates 50+ disparate MCP servers into a single unified interface for AI agents. Instead of loading every tool definition upfront and burning tokens, agents use three simple tools — find, code, and run — to discover and invoke any capability on demand. Code mode lets the agent write TypeScript workflows combining multiple tools in one step. NCP reports 97% fewer tokens consumed and 5x faster tool selection compared to loading individual MCP servers.

01

TL;DR

STS2MCP logo
STS2MCPDev Tooling · ★ 526

AI agents autonomously playing Slay the Spire 2

Read STS2MCP full review →
ncp logo
ncpDev Tooling · ★ 100

Reducing token costs when an AI agent needs access to many tools

Read ncp full review →
02

Side-by-Side Comparison

Field
STS2MCP logoSTS2MCP
ncp logoncp
Category
Dev Tooling
Dev Tooling
Stars
★ 526
★ 100
License
MIT
NOASSERTION
Install Command
git clone https://github.com/Gennadiyev/STS2MCP.git
npm install -g @portel/ncp
Updated
2mo ago
4d ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
agentic-ai, mcp-server, mcp-servers
ai-agents, claude, claude-desktop
03

Features

STS2MCP logoSTS2MCP
01Exposes game state and actions via a localhost REST API
02Optional MCP server for Claude Desktop / Claude Code integration
03Supports singleplayer and multiplayer (co-op)
04Automatically starts HTTP server on localhost:15526
05Allows AI agents to fully automate game runs
ncp logoncp
01Aggregates 50+ MCP servers into 2-3 unified tools (find/code/run)
02Code mode: agents write TypeScript to call multiple tools in one step
03On-demand tool loading — only active tools consume tokens
04Scheduling support for recurring task execution
05Project-level configuration — each project defines its own MCP set
04

Use Cases

STS2MCP logoSTS2MCP
↳AI agents autonomously playing Slay the Spire 2
↳Collaborative human-AI co-op runs
↳Benchmarking AI reasoning and decision-making capabilities
ncp logoncp
↳Reducing token costs when an AI agent needs access to many tools
↳Building multi-step TypeScript workflows that combine search, files, and APIs
↳Managing multiple MCP servers across different projects from one config
05

Best For

STS2MCP logoSTS2MCP
—
ncp logoncp
Hidden Gem
FAQ

FAQ

What is the difference between STS2MCP and ncp?
Both STS2MCP and ncp are in the Dev Tooling category. STS2MCP has 526 stars, while ncp has 100 stars.
Which is better, STS2MCP or ncp?
The best choice depends on your use case. Choose STS2MCP if AI agents autonomously playing Slay the Spire 2, and ncp if Reducing token costs when an AI agent needs access to many tools.
Is STS2MCP free or open source?
Yes, STS2MCP is open source on GitHub (MIT).
Is ncp free or open source?
Yes, ncp is open source on GitHub (NOASSERTION).
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Related

Alternatives to STS2MCP →Alternatives to ncp →STS2MCP details →ncp details →