MCP server

Northline ChainKit

dev.workers.northline-c86.northline-chainkit/chainkit

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Pay-per-call Base & Arc onchain facts for agents: address risk, USDC payment check, tx explain.

Website

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

6

Token cost

About 857 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http chainkit https://northline-chainkit.northline-c86.workers.dev/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.chainkit]
url = "https://northline-chainkit.northline-c86.workers.dev/mcp"

Gemini CLI

{"mcpServers":{"chainkit":{"httpUrl":"https://northline-chainkit.northline-c86.workers.dev/mcp"}}}

Cursor

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

VS Code

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

Antigravity

agy mcp add chainkit https://northline-chainkit.northline-c86.workers.dev/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"chainkit","server_url":"https://northline-chainkit.northline-c86.workers.dev/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"chainkit","server_url":"https://northline-chainkit.northline-c86.workers.dev/mcp"}

Tools

• address_profile ~182 tokens
  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 USDC on Base per call v
• chainkit_catalog ~63 tokens
  Free. Lists every ChainKit tool with its price, required inputs and an example, plus how x402 payment works. Call this first.
• explain_transaction ~154 tokens
  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 client pays automaticall
• network_status ~124 tokens
  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 ~109 tokens
  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).
• verify_usdc_payment ~225 tokens
  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 x402 (unpaid calls retur

Browse

• Payments

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