Public HTTPS Certificate Preflight
Read-only public TLS certificate preflight: expiry, not-before, hostname match and CA authorization from a pinned public IPv4 TLS handshake. No HTTP crawling, private IPs, secrets or ownership certification.
1 route settlement-verified · $0.005 USDC/request · 1 endpoint · Tools · base network · x402 protocol
Verified routes
GET /v1/https-cert-preflight· $0.005 · 2026-10-27 · receipt
Other routes are unverified.
Networks: Base (settlement-verified)
Discovery is free. Agents search the catalogue here. Payment happens on the listing 402, not on PayAPI.
url https://payapi.market/mcpListing facts
- Provider
- VM5 Delivery Lab (unregistered independent project)
- Hosted at
vm5-openapi-x402.onrender.com- Category
- Tools
- Price
- $0.005 USDC per request
- Endpoints
- 1
- Payment networks
- Base
- Settlement-verified
- 1 route, last checked 2026-10-27
- Listed on PayAPI Market
- 2026-10-26
Try Public HTTPS Certificate Preflight
Call a verified route without paying first. The server should answer HTTP 402 Payment Required with the price, the USDC asset, the network and the wallet to pay. An x402 client pays that amount on Base and retries with the payment header.
curl -i "https://vm5-openapi-x402.onrender.com/v1/https-cert-preflight"About this API
Public HTTPS Certificate Preflight is listed in the Tools category with pricing at $0.005 USDC/request. One route has been settlement-verified by PayAPI Market on 2026-10-27. View receipt on Basescan.
Payments settle on base in USDC via the x402 protocol. AI agents discover this API through the PayAPI Market MCP server and pay per request without API keys or accounts.
This API exposes 1 endpoint.
Questions about this API
What does Public HTTPS Certificate Preflight do?
Read-only public TLS certificate preflight: expiry, not-before, hostname match and CA authorization from a pinned public IPv4 TLS handshake. No HTTP crawling, private IPs, secrets or ownership certification. It is provided by VM5 Delivery Lab (unregistered independent project).
How much does Public HTTPS Certificate Preflight cost?
Public HTTPS Certificate Preflight is priced at $0.005 USDC per request, paid per call with no subscription. PayAPI Market paid 0.005 USDC for one call to /v1/https-cert-preflight when it verified the listing. The exact amount for each call is in the HTTP 402 response before any money moves.
Do I need an API key or account to use Public HTTPS Certificate Preflight?
No. Public HTTPS Certificate Preflight uses the x402 protocol, so an agent pays per request in USDC on Base and gets the response, with no API key, account or signup.
Has Public HTTPS Certificate Preflight been verified?
Yes, 1 route. PayAPI Market paid for a real call from its own wallet, received real data back and recorded the USDC settlement on-chain, most recently on 2026-10-27.
How does an AI agent find Public HTTPS Certificate Preflight?
Through the free PayAPI Market MCP server at https://payapi.market/mcp, using search_apis or get_api, or over plain HTTP at https://payapi.market/agent/search. Discovery is free; the agent pays the provider directly on the listing's own 402.
More Tools APIs · Browse the marketplace · List your own API
Related APIs
- x402-seller · 1 route verified · Pay-per-call x402 utilities on Base USDC: GET /timestamp (ISO UTC clock) and POST /echo. $0.01 per request. Durable host https://x402seller.mooo.com (urllib-clean 402). Backup https://pay.x402seller.ddnsfree.com.
- Money Reactor DeFi Yield Scanner (stablecoins) · 1 route verified · Deterministic agent utility on Base. Always-deliver guarantee, real-time response, settled in USDC via x402. Pay one call, get the answer inline.
- Public Email DNS Preflight · 1 route verified · Read-only public DNS preflight for a domain: MX, SPF and DMARC observations for developer and agent workflows. No email contents, credentials or private DNS access. Informational metadata only.
- Money Reactor Instant Store: Agent Onboarding Kit Base (RPC + EIP-3009) · 1 route verified · INSTANT DELIVERY - everything an agent needs to operate on Base: verified public RPCs with getLogs chunking limits, USDC contract and the EIP-712 domain for gasless EIP-3009 transfers, minimal buyer code in Python and JS, agent wallet hygiene rules. BASE_CHAIN.json + README inline in the paid response. Settles in USDC via x402.
- Money Reactor Instant Store: x402 Facilitator Directory (field-verified) · 1 route verified · INSTANT DELIVERY - who settles x402 payments today: 5 facilitators field-verified on Base mainnet (PayAI, UVDA, CDP, x402.org public, Circle Gateway) with endpoints, fees, chains, discovery feeds and the v1/v2 quirks that cost real teams days. FACILITATORS.json + README inline in the paid response. Settles in USDC via x402.
- Money Reactor Instant Store: x402 API Spec Kit (OpenAPI 3.0.3) · 1 route verified · INSTANT DELIVERY - complete OpenAPI 3.0.3 reference spec for an x402 paid API (15 endpoints, Spectral-clean 0 errors/0 warnings, all 39 $ref verified) plus an integration checklist with lint and $ref resolver scripts. Retarget and ship your paid-API spec in an hour. Files inline in the paid response. Settles in USDC via x402.