The What Agents Buy MCP server,
connected in one click.
Independent measured reviews of x402 API sellers: pre-payment verdicts and accuracy grades. Connect the official What Agents Buy 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 What Agents Buy 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 what-agents-buy https://whatagentsbuy.com/mcpRun in your terminal, then restart Claude Code.
What Agents Buy · https://whatagentsbuy.com/mcp
What your AI can do with What Agents Buy
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “find_api”: USE WHEN you need an API that does something and want payable options. Searches the whole x402 market for what you describe and returns a ra.”
“Use “check_before_paying”: USE WHEN your agent is about to pay an x402 API and you want to know if it is safe and worth it. Returns one verdict for a URL or host, gate.”
“Use “look_up_seller”: USE WHEN you have a specific seller host and want its full track record. Returns every grade earned by actually paying it, what was quoted v.”
“Use “rank_sellers”: USE WHEN you want a ranked list of sellers across the market. by='revenue' ranks by raw USDC received (who is busy); by='real_demand' ranks.”
How secure is the What Agents Buy MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how What Agents Buy holds up.
Official endpoint
Operated by What Agents Buy (whatagentsbuy.com) 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 What Agents Buy 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 What Agents Buy
Choose What Agents Buy in the gate directory. No sign-in needed.
Use it anywhere
What Agents Buy'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 What Agents Buy exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
find_api — USE WHEN you need an API that does something and want payable options. Searches the whole x402 market for what you describe and returns a ra
check_before_paying — USE WHEN your agent is about to pay an x402 API and you want to know if it is safe and worth it. Returns one verdict for a URL or host, gate
look_up_seller — USE WHEN you have a specific seller host and want its full track record. Returns every grade earned by actually paying it, what was quoted v
rank_sellers — USE WHEN you want a ranked list of sellers across the market. by='revenue' ranks by raw USDC received (who is busy); by='real_demand' ranks
rank_by_accuracy — USE WHEN a category has an objective right answer (crypto-price, stock-price, fx-rate, gas-price, wallet-balance, weather) and you want the
market_size — USE WHEN asked how big x402 is, whether it is growing, or what settled recently. Returns both what actually settled on Base over the last da
known_payment_traps — USE WHEN writing payment code, or before trusting an unfamiliar seller. The field notes: each is a specific way an agent paying an API loses
Who runs the What Agents Buy MCP server?
The What Agents Buy MCP server at a glance
https://whatagentsbuy.com/mcpQuestions, answered
Is there an official What Agents Buy MCP server?
Yes — What Agents Buy operates its own remote MCP server at whatagentsbuy.com. 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 What Agents Buy to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick What Agents Buy in the directory. No account or sign-in is needed. From then on, What Agents Buy's tools are available in every client you've connected to gate.
Do I need to host anything?
No. What Agents Buy runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the What Agents Buy 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 What Agents Buy in minutes. No credit card required.
Connect more than just What Agents Buy
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up What Agents Buy in: Claude · Claude Code · ChatGPT · Cursor · VS Code
Give your AI What Agents Buy — safely.
One URL. All MCPs. Full control. Free to start.
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