Northline ChainKit
Pay-per-call Base & Arc onchain facts for agents: address risk, USDC payment check, tx explain.
Connect Remote server
claude mcp add --transport http chainkit https://northline-chainkit.northline-c86.workers.dev/mcp
{
"mcpServers": {
"chainkit": {
"url": "https://northline-chainkit.northline-c86.workers.dev/mcp"
}
}
}
{
"servers": {
"chainkit": {
"type": "http",
"url": "https://northline-chainkit.northline-c86.workers.dev/mcp"
}
}
}
Settings > Connectors > Add custom connector
URL: https://northline-chainkit.northline-c86.workers.dev/mcp
Tools 6 found in our last check
chainkit_catalogFree. Lists every ChainKit tool with its price, required inputs and an example, plus how x402 payment works. Call this first.
address_profilePreflight 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 US…
verify_usdc_paymentVerify 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 x40…
explain_transactionExplain 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 cli…
network_statusLive 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_balancesUSDC 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).
Details
| Endpoint | https://northline-chainkit.northline-c86.workers.dev/mcp (Streamable HTTP) |
| First published | 27 Oct 2026 |
| Last updated | 27 Oct 2026 |
| Registry name | dev.workers.northline-c86.northline-chainkit/chainkit |
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