✦ Rigel — Solana MCP server

Give your AI agent eyes on Solana. Rigel is an open-source MCP server that connects Claude Desktop, Claude Code, Cursor, and any stdio MCP client to the Solana blockchain and the pump.fun ecosystem.

Read-only by design. No private keys, no signing, no custody — the only configuration is which RPC to read from.

Tools

| Tool | Input | Returns | |---|---|---| | rigel_get_wallet_balance | walletAddress | SOL balance + major SPL token holdings | | rigel_inspect_token_data | tokenAddress | Metadata, supply, bonding-curve SOL, curve completion % | | rigel_analyze_rug_risk | tokenAddress | Mint/freeze authority status, top-holder concentration, risk rating | | rigel_check_first_buyers | tokenAddress | Bundle detection: fresh-wallet holders, shared funding wallets, supply concentration | | rigel_deployer_history | tokenAddress | Deployer rap sheet: who launched it, wallet age, activity, remaining bag | | rigel_market_snapshot | tokenAddress | Live price, market cap, liquidity, volume, buys/sells flow, momentum read | | rigel_full_audit | tokenAddress | The whole battery in one call, with a combined verdict and top reasons |

Quick start (Claude Desktop)

Paste into claude_desktop_config.json and restart Claude:

{
  "mcpServers": {
    "rigel-solana": {
      "command": "npx",
      "args": ["-y", "@rigel-protocol/solana-mcp"],
      "env": { "SOLANA_RPC_URL": "https://api.mainnet-beta.solana.com" }
    }
  }
}

Then ask your agent things like:

• "What's in this wallet? FC5i…"
• "Inspect this pump.fun token: 7xKq…"
• "Is this token a rug?"

Build from source

npm install
npm run build
node dist/index.js   # speaks MCP over stdio

Configuration

| Env var | Default | Purpose | |---|---|---| | SOLANA_RPC_URL | https://api.mainnet-beta.solana.com | Any Solana RPC — public, Helius, Triton, or your own node |

The public mainnet RPC rate-limits aggressively; a free Helius key is recommended for heavy use.

Security posture

• No private keys, seed phrases, or signing code anywhere in this codebase.
• Local stdio transport — queries go from your machine to your RPC, nothing in between.
• Logs go to stderr; stdout is reserved for MCP protocol traffic.
• Zod-validated inputs; friendly errors for invalid public keys and RPC failures.

Disclaimer

Rigel reports on-chain facts. The rug-risk rating is a heuristic over public data (authority status, holder concentration) — it cannot detect every risk, and nothing it outputs is financial advice.

License

MIT