x402 Endpoint Preflight Safety Check

API ↗

x402 Endpoint Preflight Safety Check is a paid API for AI agents from x402-agent-api.onrender.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-13).

Checks whether an x402 paid endpoint is safe to call before spending USDC, returning a pay/no-pay verdict with wallet sanction status, usage history, and pricing details.

How this service works

SEC filings and web data for AI agents: read any section of a US public company's 10-K or 10-Q (risk factors, MD&A, …) since 2001, see what changed in it since last year, its latest 8-K events and press releases, a one-call due-diligence dossier with red flags (or a batch screen of 10), market-wide red-flag alerts (restatements, auditor changes, late filings, insider buying), today's earnings releases with their key figures, and a free index of its filings; turn any web page into clean Markdown; check whether a crypto wallet or token is safe to pay or trade (OFAC, owner powers, liquidity), new Base token launches with risk verdicts, and whether an x402 endpoint is safe to pay; profile a domain's email setup; HVAC engineering calculations (psychrometrics, coil loads, duct sizing) with every step shown. No accounts or API keys: pay per call in USDC with x402. Discovery endpoints are free; paid endpoints use the x402 v2 protocol with USDC on Base. Call a paid endpoint, receive 402 with a PAYMENT-REQUIRED header, sign the payment, and retry with PAYMENT-SIGNATURE. Libraries such as @x402/fetch do this transparently. Which tool: What filings does a company have? Which year's report or which 8-K do I want? → sec_list_filings (free). What was filed with the SEC since Friday / this morning? Which companies reported earnings or a CEO change today? → sec_list_filings (free). What are a company's risk factors? What did management say in the MD&A? What was in an earlier year's report? → sec_filing_section ($0.01). What changed in a company's risk factors (or MD&A, business, legal proceedings) since last year? Which new risks were added? → sec_section_changes ($0.04). I need several sections of the same report (e.g. risk factors and MD&A). → sec_filing_sections ($0.015). What are a company's revenue, profit, EPS, cash, debt and free cash flow over the last years or quarters? → sec_financials ($0.005). Are a company's insiders (CEO, CFO, directors) buying or selling its stock? → sec_insider_trades ($0.005). What happened at a company lately: earnings, CEO/CFO changes, acquisitions, cybersecurity incidents? → sec_recent_events ($0.01). Which companies' SEC filings mention a phrase ("material weakness", "tariff", a product or a person)? → sec_full_text_search ($0.01). Brief me on a public company: is anything wrong (restatements, auditor changes, losses, insider selling)? Financials, recent events and insiders in one call. → company_dossier ($0.03). Screen a list of tickers (a portfolio or watchlist) for red flags in one call, worst first. → company_dossier_batch ($0.15). Who reported earnings today (or this morning), and what were the headline numbers? Optionally just my watchlist. → sec_earnings_today ($0.01). Did anything serious just get filed anywhere in the market (restatements, auditor changes, late filings, CEO exits, insider buying)? (free counter for polling) → sec_alerts_peek (free). Show me the new SEC red-flag alerts across the market or for my watchlist (poll with the cursor). → sec_market_alerts ($0.005). Who is this company (from a domain, name or ticker): what it does, HQ, founders, CEO, employees, ticker? → company_profile ($0.005). Is this person, company or crypto wallet on a US sanctions (OFAC) list? → sanctions_screen ($0.005). Where are US interest rates, inflation and unemployment right now? → economic_indicators ($0.003). What does this web page, article, PDF, feed or documentation say? → scrape_markdown ($0.002). Read several pages at once, or find a site's pages (pricing, docs, blog) first? → site_map ($0.002). Is it safe to pay this wallet address (an x402 payTo, a vendor, another agent)? Is it sanctioned, new, a contract? → wallet_risk_check ($0.005). Is this token a scam? Can the owner mint, freeze or tax it? Is there liquidity to sell? → token_risk_check ($0.01). What exactly does a paid tool return? (free, real output for an example input) → free_sample (free). Did any new tokens launch on Base since my last check? (free counter for polling) → token_launches_peek (free). Which tokens just launched on Base, and which look safe? (poll with since_block) → new_token_launches ($0.01). Is it safe to pay this x402 endpoint: valid challenge, fair price, clean payTo wallet, real usage? → x402_preflight ($0.003). Is this email address real and safe to send to? → email_verify ($0.001). Who hosts a company's email, is SPF/DMARC set up, which SaaS does it use? → domain_enrich ($0.004). HVAC: what are the dew point, enthalpy, RH and humidity ratio of air (from any two properties, at any elevation)? → hvac_psychrometrics ($0.002). HVAC: what is the cooling or heating coil load (sensible, latent, tons), or the mixed air with outdoor air? → hvac_coil_load ($0.002). HVAC: what size duct for this airflow (equal friction or velocity), or what friction and velocity in this duct? → hvac_duct_size ($0.002). Inputs are forgiving: name a company by ticker, CIK or name; sections as "Risk Factors", "MD&A" or "Item 1A"; 8-K events as codes (5.02) or words (earnings, executive changes); unknown fields are ignored. Invalid input returns a valid example, and failed calls are never charged. Every paid result ends with `next_calls`: the natural follow-up questions as ready-to-send calls with their price. Live reliability (answers, failures and latency per tool) is published at /status.

Output

Returns a JSON object with a top-level verdict (ok_to_pay or do_not_pay), the pay-to wallet address with its own sanction/flags verdict, 30-day usage stats (calls, unique payers, bazaar listing status), parsed x402 challenge details (price in USD, network, asset, scheme), and an array of reason objects explaining the verdict with severity levels. Also includes a disclaimer and any suggested next calls.