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2s.io TLS Certificate Inspector
x402
2s.io TLS Certificate Inspector is a paid API for AI agents from 2s.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Opens a live TLS connection to any public host and returns full certificate details including expiry, chain validation, SANs, fingerprint, and negotiated protocol/cipher.
Price / call$0.001
Success—
StatusUnknown
How this service works
Open a live TLS connection to a host and return its certificate. Give a host (and optional port, default 443). Returns the negotiated TLS protocol + cipher, whether the chain validates against system roots, and the leaf certificate's subject + issuer (CN/O/C), validity window (valid-from / valid-to), days until expiry + expired flag, serial number, SHA-256 fingerprint, Subject Alternative Names, and the chain length. A genuine network probe agents can't do from their sandbox — for cert-expiry monitoring, TLS audits, and verifying who issued a site's certificate. SSRF-guarded: the host must resolve to a public address. Self-signed and expired certs are reported (not rejected).
Output
Returns the negotiated TLS protocol and cipher, chain validation status against system roots, leaf certificate subject and issuer (CN/O/C), validity window (valid-from and valid-to), days until expiry with an expired flag, serial number, SHA-256 fingerprint, Subject Alternative Names list, and chain length.
Example use cases
Example prompt
“Check the TLS certificate for api.stripe.com — I want to know who issued it, when it expires, whether the chain is valid, and the SHA-256 fingerprint.”
Technical details
Endpoint
GEThttps://2s.io/api/tls/cert-infoWhen to prefer
Use this endpoint when you need a real-time, live network probe of a TLS endpoint from outside an AI sandbox — especially for certificate expiry monitoring, TLS audit workflows, verifying certificate issuers, or checking SANs on a domain you don't control. Prefer this over static certificate databases when freshness and actual negotiation details (cipher, protocol) matter.
Side effects
- Host resolves to a private/reserved IP address — SSRF guard blocks the request
- Host does not exist or DNS resolution fails — returns error with resolution failure detail
- Connection refused or timeout on specified port — returns network error
- Port out of range 1-65535 — input validation error
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"host": "google.com",
"port": 443
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"data": {
"ok": true,
"items": [
{
"host": "google.com",
"port": 443,
"cipher": {
"name": "TLS_AES_256_GCM_SHA384",
"version": "TLSv1.3"
},
"protocol": "TLSv1.3",
"authorized": true,
"resolvedIp": "172.253.63.138",
"certificate": {
"isCa": false,
"issuer": {
"raw": {
"C": "US",
"O": "Google Trust Services",
"CN": "WR2"
},
"country": "US",
"commonName": "WR2",
"organization": "Google Trust Services"
},
"expired": false,
"subject": {
"raw": {
"CN": "*.google.com"
},
"country": null,
"commonName": "*.google.com",
"organization": null
},
"validTo": "2026-08-17T08:36:18.000Z",
"validFrom": "2026-05-25T08:36:19.000Z",
"serialNumber": "139CDF29A8B5BC5212413EEEAFD18CBE",
"daysUntilExpiry": 60,
"subjectAltNames": [
"*.google.com",
"*.appengine.google.com",
"*.bdn.dev",
"*.origin-test.bdn.dev",
"*.cloud.google.com",
"*.crowdsource.google.com",
"*.datacompute.google.com",
"*.google.ca",
"*.google.cl",
"*.google.co.in",
"*.google.co.jp",
"*.google.co.uk",
"*.google.com.ar",
"*.google.com.au",
"*.google.com.br",
"*.google.com.co",
"*.google.com.mx",
"*.google.com.tr",
"*.google.com.vn",
"*.google.de",
"*.google.es",
"*.google.fr",
"*.google.hu",
"*.google.it",
"*.google.nl",
"*.google.pl",
"*.google.pt",
"*.gemini.cloud.google.com",
"*.gstatic.com",
"*.metric.gstatic.com",
"*.gvt1.com",
"*.gcpcdn.gvt1.com",
"*.gvt2.com",
"*.gcp.gvt2.com",
"*.url.google.com",
"*.youtube-nocookie.com",
"*.ytimg.com",
"ai.android",
"android.com",
"*.android.com",
"*.flash.android.com",
"g.co",
"*.g.co",
"goo.gl",
"www.goo.gl",
"google-analytics.com",
"*.google-analytics.com",
"google.com",
"googlecommerce.com",
"*.googlecommerce.com",
"urchin.com",
"*.urchin.com",
"youtu.be",
"youtube.com",
"*.youtube.com",
"music.youtube.com",
"*.music.youtube.com",
"youtubeeducation.com",
"*.youtubeeducation.com",
"youtubekids.com",
"*.youtubekids.com",
"yt.be",
"*.yt.be",
"android.clients.google.com",
"*.aistudio.google.com"
],
"fingerprintSha256": "E4:13:4C:BC:32:C0:C0:97:65:99:C6:84:AE:0B:6A:C8:49:B2:D7:55:46:D9:34:DF:DB:61:1F:A0:D9:A0:E9:CB"
},
"chainLength": 3,
"authorizationError": null
}
],
"total": 1,
"source": {
"url": "https://2s.io",
"license": "No upstream license — computed by 2s.io",
"provider": "Live TLS handshake (node:tls)"
}
},
"meta": {
"cost": {
"usd": 0.001,
"tier": 0
},
"caller": "x402",
"version": null,
"endpoint": "tls.cert-info",
"settlement": {
"txHash": "0xa0ccda045ee276ef10cfd1fe49e9770027c65e16da44da2eb978e18ba1d6092b",
"network": "eip155:8453",
"success": true
}
}
}Tags
x402
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