Pre-action checks for AI agents
Describe one needed capability and optionally bound price, network, or method. The service searches only Coinbase's public Bazaar API, preserves Bazaar's search rank, then live-checks at most three candidates with the existing hardened unpaid probe.
It rejects unsafe, inconsistent, filtered, stale, or uninvocable offers and returns a recommendation, alternates, disqualifications, and request skeletons. It never pays a target.
$0.005 USDC per successful call on Base.
POST https://email-preflight-api.vercel.app/api/x402-shortlist
Content-Type: application/json
{"need":"current weather for a city","maxPriceUsd":0.01,"network":"eip155:8453","method":"GET"}
See a free static shortlist sample.
Check an unfamiliar paid endpoint's price, network, payee, resource binding, timeout, and Bazaar metadata immediately before purchase. The probe never pays the target or forwards credentials.
No signup. No API key. Invalid or unsafe inputs fail before payment.
$0.003 USDC per successful call on Base.
POST https://email-preflight-api.vercel.app/api/x402-preflight
Content-Type: application/json
{"url":"https://merchant.example/api/resource","expected":{"network":"eip155:8453","maxAmountUsd":0.01}}
See a free response sample or give your agent the skill file.
Check generated campaign HTML for Gmail clipping risk, missing image alt text, unsafe or placeholder links, embedded data images, and unsubscribe references. Deterministic checks; no LLM call.
$0.01 USDC per successful call on Base.
POST https://email-preflight-api.vercel.app/api/preflight
Content-Type: application/json
{"html":"<html>...</html>"}
OpenAPI · x402 descriptor · SKILL.md · llms.txt · health