Northline ChainKit

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How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "northline-chainkit": {
      "type": "http",
      "url": "https://northline-chainkit.northline-c86.workers.dev/mcp"
    }
  }
}

6 tools

• chainkit_catalog

  Free. Lists every ChainKit tool with its price, required inputs and an example, plus how x402 payment works. Call this first.

• address_profile

  Preflight any address on Base or Arc before paying or approving it: EOA vs contract vs EIP-7702-delegated wallet, EIP-1967 proxy implementation/admin, owner(), Safe multisig threshold, ERC-20 metadata, USDC + native balance, Sourcify verification, and risk flags. Costs $0.005…

• verify_usdc_payment

  Verify that a transaction paid at least N USDC to an address on Base or Arc (handles Arc native-USDC logs). Returns verified true/false, confirmations, matching transfers and reasons. Use it to confirm a customer paid before delivering. Costs $0.003 USDC on Base per call via…

• explain_transaction

  Explain a Base or Arc transaction in plain JSON: status, confirmations, fee, method selector, created contract, and every ERC-20 transfer decoded with symbol and decimals. Costs $0.004 USDC on Base per call via x402 (unpaid calls return the x402 PaymentRequired; any x402 MCP…

• network_status

  Live block height, gas price and fee estimates (transfer, ERC-20 transfer, contract call) for Base or Arc. On Arc fees are quoted directly in USDC. Costs $0.001 USDC on Base per call via x402 (unpaid calls return the x402 PaymentRequired; any x402 MCP client pays automatically).

• usdc_balances

  USDC and native balance of one address on both Base and Arc in a single call. Costs $0.002 USDC on Base per call via x402 (unpaid calls return the x402 PaymentRequired; any x402 MCP client pays automatically).

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