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The Syntalic MCP server lets AI agents call the Pricing Intelligence API as native tools. The MCP handles wallet setup, multi-chain payment routing, and protocol negotiation automatically — you ask Claude a pricing question, the MCP pays and returns the answer.

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Install

npx @syntalic/mcp-server --setup
The interactive setup walks through:
  1. Generating a multi-chain wallet (Solana + EVM), or skipping if you want to bring your own keys
  2. Wiring the MCP into Claude Code
After setup, fund the wallet with USDC on any of Solana, Base, or Tempo: 
# Show your wallet addresses, balances, and config
npx @syntalic/mcp-server --info

# Back up your private keys before funding — mandatory
npx @syntalic/mcp-server --export-keys
Per-query pricing is $0.01–$0.02, so a few dollars buys hundreds of queries.
Use a dedicated agent wallet, not your primary wallet. The MCP only needs a small balance to operate.

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Bring your own keys

Skip the auto-generated wallet by setting both env vars before running setup: 
export CRUSH_EVM_PRIVATE_KEY=0x<your_evm_private_key>
export CRUSH_SOLANA_PRIVATE_KEY=<your_solana_base58_key>
npx @syntalic/mcp-server --setup
When both are set, the wallet file is ignored entirely. Both env vars are required together — setting only one is an error.

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Manual MCP config

If your client doesn’t support automatic MCP setup, add this to your MCP config: 
{
  "mcpServers": {
    "syntalic": {
      "command": "npx",
      "args": ["-y", "@syntalic/mcp-server"]
    }
  }
}

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Multi-chain routing

The MCP holds USDC across Solana, Base, and Tempo. On every call, it tries chains in order (Solana → Base → Tempo) and uses the first one with sufficient balance. You don’t need to think about which chain to fund — top up wherever’s convenient. If a chain’s RPC is rate-limited or down, the MCP attempts payment anyway rather than blocking on RPC health. Requests never hang.

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Configuration

Env varDefaultPurpose
CRUSH_EVM_PRIVATE_KEY(auto)Override EVM key (Base + Tempo)
CRUSH_SOLANA_PRIVATE_KEY(auto)Override Solana key
CRUSH_API_BASEhttps://api.syntalic.comAPI base URL (HTTPS required)
CRUSH_SOLANA_RPC_URLmainnet-beta public RPCCustom Solana RPC for balance checks
CRUSH_TEMPO_RPC_URLhttps://rpc.tempo.xyzCustom Tempo RPC for balance checks

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CLI commands

CommandPurpose
npx @syntalic/mcp-serverStart the MCP server (default)
... --setupInteractive setup (wallet + Claude Code wiring)
... --export-keysPrint private keys for backup
... --infoShow addresses, balances, and config
... --helpUsage overview

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What’s next

Available tools

The 13 pricing tools the MCP exposes, with example prompts.

Direct HTTP

Skip the MCP and call the API directly with x402.