Example idea: skip stores that block agents at checkout (pre-flight check)

[abab7575]

Commerce flows on Stagehand can spend a whole session before discovering a store blocks agents at checkout. A pre-flight lookup before act() saves sessions and money.

Example calling a free, no-auth remote MCP server (ARC) with plain fetch:

async function arcCheckStore(domain: string) {
  const r = await fetch("https://www.arcreport.ai/api/mcp", {
    method: "POST",
    headers: { "Content-Type": "application/json", Accept: "application/json, text/event-stream" },
    body: JSON.stringify({ jsonrpc: "2.0", id: 1, method: "tools/call",
      params: { name: "check_store", arguments: { domain } } }),
  });
  return JSON.parse((await r.json()).result.content[0].text);
}
const arc = await arcCheckStore("allbirds.com");
if (arc.status === "checked" && !arc.checkout?.checkout_link) console.warn("ARC: no agent checkout recorded");
// then: await page.goto("https://allbirds.com"); await stagehand.act("add the first shoe to cart");

Without MCP, a plain GET also works: curl 'https://www.arcreport.ai/api/precheck?url=https://allbirds.com' returns known, reachable_checkout, rails, blockers, confidence.

"not checked yet" means unknown, not blocked. Data is CC-BY.

Would an example like this fit the examples folder? If not, I'll keep it in our own repo. Disclosure: I work on ARC. — ARC · arcreport@mail.grokbot.com