Stelar Signals MCP Server

Stelar Signals MCP

An MCP (Model Context Protocol) server that gives any MCP-compatible AI agent (Claude Desktop, Claude Code, Cursor, etc.) six crypto market-signal and utility tools, backed by the same classifier that runs a live production grid-trading system, plus Claude-powered text tools.

This package ships with no secrets of ours. Each user brings their own free or paid RapidAPI key — see "Get a key" below.

Tools

Paid tools (x402)

Six additional tools are pay-per-call via the x402 protocol (USDC on Base) at api.stelardigital.com — no RapidAPI signup and no API key required. Any x402-capable HTTP client (e.g. x402-fetch, Coinbase AgentKit) can pay and call directly; an unpaid call returns the live x402 payment envelope with the exact terms needed to complete payment and retry.

These are direct x402 tools, separate from the six free-with-RapidAPI-key tools above, and are billed per call in USDC on Base rather than through a RapidAPI subscription.

Get a key

Free tier (50 requests/mo) and paid tiers (Pro $9.90, Ultra $24.90, Mega $49.90) at:

https://rapidapi.com/StelarDigital/api/stelar-crypto-signals-ai-toolkit?src=mcp

Sign up, subscribe to a plan, and copy your X-RapidAPI-Key from the RapidAPI dashboard's code snippet for this API — that snippet also shows the exact gateway host to use if it differs from the default below.

Install

Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "stelar-signals": {
      "command": "npx",
      "args": ["-y", "github:StelarDigital/stelar-signals-mcp"],
      "env": {
        "RAPIDAPI_KEY": "YOUR_RAPIDAPI_KEY"
      }
    }
  }
}

Claude Code

claude mcp add stelar-signals -e RAPIDAPI_KEY=YOUR_RAPIDAPI_KEY -- npx -y github:StelarDigital/stelar-signals-mcp

Run directly

git clone https://github.com/stelardigital/stelar-signals-mcp
cd stelar-signals-mcp
npm install
RAPIDAPI_KEY=YOUR_RAPIDAPI_KEY node server.js

Configuration

RAPIDAPI_KEY is only needed for the six free-with-key tools above; the six paid x402 tools require no env vars or config at all.

Pricing (RapidAPI subscription, not this package)

This npm package itself is free and MIT-licensed. You pay RapidAPI directly for API usage above the free tier; Stelar Digital never sees or stores your key. The six paid x402 tools are billed separately, per call, in USDC on Base.

Honest capability notes

• crypto_regime, pricecheck, and token_risk cover 8 major pairs only (SOL, XLM, BTC, ETH, XRP, DOGE, LTC, ADA) — not arbitrary tokens.
• crypto_sentiment, summarize, and factcheck are LLM-backed (Claude Haiku) — treat outputs as a fast first-pass signal, not ground truth. factcheck returns uncertain for opinions, unverifiable claims, or anything requiring live data the model doesn't have.
• summarize with a url fetches the page server-side; very large or JS-rendered pages may summarize poorly or fail — pass text directly for best results.
• All tools are rate-limited by your RapidAPI plan; the free tier (50/mo) is for evaluation, not production load.
• Data source is the same market-data/classifier pipeline that runs a live grid-trading bot — it is a decision-support signal, not investment advice.
• The paid x402 tools (telemetry, sentiment, price, risk, regime, gridparams) hit the same underlying data/classifier pipeline but are billed per call rather than by RapidAPI subscription, and require no key.

License

MIT — see LICENSE.