The X402 Checks MCP server,
connected in one click.
Machine-payable deterministic identifier checks + signed XDR-1 receipts for agents. Connect the official X402 Checks 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 X402 Checks 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 x402-checks https://api.code402.dev/mcpRun in your terminal, then restart Claude Code.
X402 Checks · https://api.code402.dev/mcp
What your AI can do with X402 Checks
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 X402 Checks MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how X402 Checks holds up.
Official endpoint
Operated by X402 Checks (hcrb.in) 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 X402 Checks 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 X402 Checks
Choose X402 Checks in the gate directory. No sign-in needed.
Use it anywhere
X402 Checks'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 X402 Checks 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 X402 Checks MCP server?
The X402 Checks MCP server at a glance
https://api.code402.dev/mcpQuestions, answered
Is there an official X402 Checks MCP server?
Yes — X402 Checks operates its own remote MCP server at api.code402.dev. 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 X402 Checks to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick X402 Checks in the directory. No account or sign-in is needed. From then on, X402 Checks's tools are available in every client you've connected to gate.
Do I need to host anything?
No. X402 Checks runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the X402 Checks 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 X402 Checks in minutes. No credit card required.
Connect more than just X402 Checks
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up X402 Checks in: Claude · Claude Code · ChatGPT · Cursor · VS Code