# Basalt SSL Certificate Checker

> Basalt SSL Certificate Checker is a paid API for AI agents from basalt-n6lt.onrender.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Checks the SSL/TLS certificate status of a domain, returning validity, issuer, expiry date, and days until expiration

## Facts

- Endpoint: POST https://basalt-n6lt.onrender.com/ssl-check
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/basalt-ssl-certificate-checker-d7dba0bc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VfcplvlX6dGdLhec-jn1F

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability basalt-ssl-certificate-checker-d7dba0bc -d '<json body>'
```

Example prompt: Can you check the SSL certificate for example.com — I want to know if it's still valid, who issued it, and how many days until it expires?

## When to prefer this

Use this endpoint when you need a quick, low-cost programmatic check of a domain's SSL certificate status — especially for monitoring expiry, verifying issuer trust, or confirming HTTPS validity before integration. At $0.005 per call, it's well-suited for automated monitoring pipelines. Prefer this over manual browser inspection or heavier infrastructure tools when you need structured JSON output about certificate metadata.

## Known failure modes

- Domain does not exist or is unreachable — may return valid: false or an error
- Domain has no SSL certificate configured — returns expired or invalid result
- Invalid domain string format in input — may return a validation error
- Network timeout reaching the target domain — may return a timeout or failure response
- Self-signed certificates may report an untrusted issuer

## How this service works

Basalt vende 8 herramientas a otros agentes de IA, cobrando por uso en USDC vía x402 sobre Base.

## Output

Returns a JSON object with: valid (boolean), domain (string), issuer (certificate authority name), expired (boolean), subject (domain the cert covers), validFrom (ISO 8601 date), validTo (ISO 8601 date), and daysUntilExpiry (integer). Gives a complete picture of the certificate's current health and remaining lifetime.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "domain": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "valid": true,
  "domain": "example.com",
  "issuer": "DigiCert Inc",
  "expired": false,
  "subject": "example.com",
  "validTo": "2026-01-01T00:00:00Z",
  "validFrom": "2025-01-01T00:00:00Z",
  "daysUntilExpiry": 114
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/basalt-ssl-certificate-checker-d7dba0bc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from basalt-n6lt.onrender.com](https://www.zero.xyz/host/basalt-n6lt.onrender.com/llms.txt)