The Code402 MCP server,
connected in one click.
Discover machine-payable APIs, probe x402 payment terms, and run seller operations. Non-custodial. Connect the official Code402 MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
Add Code402 to your AI in one minute
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http code402-rail https://rail.hcrb.in/mcpRun in your terminal, then restart Claude Code.
Code402 · https://rail.hcrb.in/mcp
What your AI can do with Code402
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “crypto_ticker”: Spot USD price for a crypto ticker or CoinGecko id from public price feeds, cached 60 s. Result carries a signed receipt.”
“Use “erc20_balance”: Raw and formatted ERC-20 balanceOf for an address on Base, with decimals read from the token. Result carries a signed receipt.”
“Use “fx_spot_price_oracle”: Reference fiat and stablecoin conversion rate from a static table, not a live feed. Returns rate and inverse; result carries a signed receip.”
“Use “block_info”: Base block header: number, timestamp, transaction count and base fee for the latest or a given block. Result carries a signed receipt.”
How secure is the Code402 MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Code402 holds up.
Official endpoint
Operated by Code402 (code402.dev) at its documented MCP endpoint — not a third-party mirror or community re-host.
No sign-in needed
This server only exposes public data — no account and no credentials are involved when you connect.
Scanned before it goes live
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
Watched for drift
If Code402 adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Connected in three steps
Connect your gate
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Pick Code402
Choose Code402 in the gate directory. No sign-in needed.
Use it anywhere
Code402's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
The actual tools Code402 exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
crypto_ticker — Spot USD price for a crypto ticker or CoinGecko id from public price feeds, cached 60 s. Result carries a signed receipt.
erc20_balance — Raw and formatted ERC-20 balanceOf for an address on Base, with decimals read from the token. Result carries a signed receipt.
fx_spot_price_oracle — Reference fiat and stablecoin conversion rate from a static table, not a live feed. Returns rate and inverse; result carries a signed receip
block_info — Base block header: number, timestamp, transaction count and base fee for the latest or a given block. Result carries a signed receipt.
tx_activity — Outbound transaction count (nonce) and contract-or-EOA check for an address on Base. Result carries a signed receipt.
token_contract_risk — Deterministic Base contract facts: ERC-20 metadata, proxy slots, owner(), privileged-function selectors and flags. Not a safety verdict. Res
clean_markdown_scraper — Fetch a public web page by URL (or take your HTML) and return Markdown plus headings. No JavaScript rendering. Result carries a signed recei
context_distill — Deterministic text digest: word count, top-5 most frequent meaningful words (stop words excluded), first sentence, and a keccak-256 content
+ 16 more tools once connected
Who runs the Code402 MCP server?
The Code402 MCP server at a glance
https://rail.hcrb.in/mcpQuestions, answered
Is there an official Code402 MCP server?
Yes — Code402 operates its own remote MCP server at rail.hcrb.in. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
How do I connect Code402 to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick Code402 in the directory. No account or sign-in is needed. From then on, Code402's tools are available in every client you've connected to gate.
Do I need to host anything?
No. Code402 runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the Code402 MCP server safe to connect?
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Is it free?
Yes — you can get started with gate for free and connect Code402 in minutes. No credit card required.
Connect more than just Code402
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up Code402 in: Claude · Claude Code · ChatGPT · Cursor · VS Code