SSL/TLS certificate check
SSL/TLS certificate check: expiry, issuer, SANs, chain validity, hostname match, negotiated protocol/cipher, and weak-algo warnings for a public HTTPS host. Clean JSON.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
610 msmedian answer time
$0.01listed price per call
$0.01price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://ssl.use.x402atlas.com/check
| Category | Everything else |
|---|---|
| Provider host | ssl.use.x402atlas.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 11 from 7 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.01 | 610 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"host": "example.com",
"port": 443
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"host": {
"description": "Hostname to inspect (no scheme, no IP literal, not localhost or a reserved/internal suffix)",
"type": "string"
},
"port": {
"default": 443,
"description": "TLS port; restricted to an allowlist",
"enum": [
443,
8443
],
"type": "integer"
}
},
"required": [
"host"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"certificate": {
"properties": {
"issuer_cn": {
"type": "string"
},
"issuer_org": {
"type": "string"
},
"key_algorithm": {
"description": "e.g. RSA, ECDSA, Ed25519",
"type": "string"
},
"key_size": {
"description": "Key size in bits (0 for algorithms with no fixed size, e.g. Ed25519)",
"type": "integer"
},
"not_after": {
"format": "date-time",
"type": "string"
},
"not_before": {
"format": "date-time",
"type": "string"
},
"sans": {
"description": "Subject Alternative Names",
"items": {
"type": "string"
},
"type": "array"
},
"serial_number": {
"type": "string"
},
"signature_algorithm": {
"type": "string"
},
"subject_cn": {
"type": "string"
}
},
"type": "object"
},
"chain": {
"properties": {
"chain_valid": {
"description": "Verified against the system trust store using only the intermediates the server presented; no AIA fetching",
"type": "boolean"
},
"days_until_expiry": {
"type": "integer"
},
"hostname_matches": {
"type": "boolean"
},
"is_expired": {
"type": "boolean"
},
"is_self_signed": {
"type": "boolean"
}
},
"type": "object"
},
"connection": {
"properties": {
"cipher_suite": {
"type": "string"
},
"tls_version": {
"type": "string"
}
},
"type": "object"
},
"host": {
"type": "string"
},
"port": {
"type": "integer"
},
"queried_at": {
"description": "When the inspection ran",
"format": "date-time",
"type": "string"
},
"warnings": {
"description": "Human-readable advisories (weak algo, expired, self-signed, chain invalid, hostname mismatch); empty array when clean",
"items": {
"type": "string"
},
"type": "array"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}