About Stelar Signals
Stelar Signals is an MCP server for agents that need live crypto signals and portfolio telemetry. It combines six x402 payment-based tools with six RapidAPI tools, covering eight major assets.
Key features
- 01Live price and market direction signals
- 02Text and asset sentiment scoring
- 03Portfolio telemetry and reconciled P&L
- 04Volatility and market-regime assessment
- 05Grid-trading suitability and parameters
- 06Six tools use x402 payments; six need RapidAPI key
Use cases
- 01Check price changes and market signals for major assets
- 02Review telemetry for an AI-managed crypto portfolio
- 03Assess volatility risk and market regime
- 04Generate grid parameters from recent market structure
MCP support
Exposes crypto signal and portfolio tools to MCP clients, with a hosted streamable-HTTP endpoint. Six tools use x402 payments in USDC on Base; six others require a RapidAPI key.
Configuration
Remote servers need no local install. Pick your client, then copy the config or install in one click.
https://api.stelardigital.com/mcpclaude mcp add --transport http stelar-signals https://api.stelardigital.com/mcp{"mcpServers":{"stelar-signals":{"type":"http","url":"https://api.stelardigital.com/mcp"}}}Open in Cursor{"servers":{"stelar-signals":{"type":"http","url":"https://api.stelardigital.com/mcp"}}}Open in VS Code{"mcpServers":{"stelar-signals":{"type":"http","url":"https://api.stelardigital.com/mcp"}}}{"mcpServers":{"stelar-signals":{"serverUrl":"https://api.stelardigital.com/mcp"}}}Run commands in a terminal; paste JSON into the client’s MCP config and restart. Servers that need sign-in will prompt on first connect.
Tools
12| Parameter | Type | Required | Description |
|---|---|---|---|
| asset | enum | Yes | Asset symbol, one of: SOL, XLM, BTC, ETH, XRP, DOGE, LTC, ADASOL | XLM | BTC | ETH | XRP | DOGE | LTC | ADA |
Details
From the project READMEStelar Signals MCP
An MCP (Model Context Protocol) server that gives any MCP-compatible agent (Claude Code, Claude Desktop, Cursor, Windsurf, Codex …) live crypto market signals and portfolio telemetry.
Six of its tools are pay-per-call over x402 — no signup, no account, and no API key. Your agent pays cents in USDC on Base from its own wallet and gets the data back in the same request.
Install
claude mcp add stelar -- npx -y stelar-signals-mcp
Or in any MCP client config:
{
"mcpServers": {
"stelar": { "command": "npx", "args": ["-y", "stelar-signals-mcp"] }
}
}
The server starts and lists every tool with no environment variables set.
Paid tools — x402, USDC on Base, no key required
| Tool | Price | What you get |
|---|---|---|
price | $0.005 | Current price, 24h and 7d change, bull/bear/neutral signal |
sentiment | $0.005 | Sentiment score (-1 to +1) and label, for text or an asset |
telemetry | $0.005 | Live telemetry of an AI-managed crypto portfolio — allocation, reconciled P&L, signal votes, human-approval trail |
risk | $0.02 | Volatility / drawdown risk regime — ATR% vs its 30-day p80 baseline, labeled low/med/high |
regime | $0.03 | Market regime (chop / uptrend / downtrend / high-volatility) plus a grid-trading suitability verdict |
gridparams | $0.05 | Grid count, spacing %, price band and per-grid allocation from live 24h market structure |
These call https://api.stelardigital.com, which answers HTTP 402 with a payment
challenge. Any x402-capable client settles it and retries automatically. Assets
covered: SOL, BTC, ETH, XRP, DOGE, LTC, ADA, XLM.
These are live production endpoints backed by real market data — not demo stubs.
Free-tier tools — these DO need a RapidAPI key
crypto_regime, crypto_sentiment, pricecheck, token_risk, summarize,
factcheck are served through RapidAPI. Set RAPIDAPI_KEY to use them:
claude mcp add stelar -e RAPIDAPI_KEY=your-key -- npx -y stelar-signals-mcp
Without the key these six return a clear error; the six paid x402 tools above keep working, because they do not use RapidAPI at all.
Discovery
GET https://api.stelardigital.com/catalog endpoints, prices, parameters
GET https://api.stelardigital.com/.well-known/x402 x402 discovery manifest
GET https://api.stelardigital.com/openapi.json OpenAPI 3.1 spec
A hosted streamable-HTTP MCP endpoint is also live at
https://api.stelardigital.com/mcp.
Honest limits
- Signals cover the eight majors listed above, not arbitrary tokens.
- Paid tools need a funded wallet; without one they return HTTP 402 rather than data.
- Every response carries
generated_at; nothing is cached longer than a minute.
About
Built by Stelar Digital. One human. One AI. A whole company.
MIT licensed.
Comments
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.