# Strale SSL Certificate Chain Lookup

> Strale SSL Certificate Chain Lookup is a paid API for AI agents from api.strale.io, paid per call via x402, $0.054/call, status unknown (last checked 2026-09-15).

Fetches and returns the SSL/TLS certificate chain for a given hostname, enabling verification of certificate validity, issuer hierarchy, and trust chain integrity.

## Facts

- Endpoint: GET https://api.strale.io/x402/v2/ssl-certificate-chain
- Price: $0.054/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/strale-ssl-certificate-chain-lookup-99244203
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jJCxRlkPGy1yGVSiSbDRS

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 strale-ssl-certificate-chain-lookup-99244203
```

Example prompt: Can you fetch the SSL certificate chain for api.example.com on port 443 and tell me who issued the certificate and whether the chain is valid?

## When to prefer this

Use this endpoint when you need a cryptographically auditable, independently verified SSL certificate chain lookup across 27 countries, especially when compliance, trust verification, or audit trails are required. Prefer over ad-hoc openssl commands or browser inspection when results need to be logged with a tamper-evident audit record or consumed programmatically by an AI agent.

## Known failure modes

- Host not reachable or DNS resolution failure — connection timeout or host not found error
- Port not open or TLS not supported on specified port — connection refused
- Invalid hostname format — validation error on input
- Self-signed or untrusted certificate — may return chain with trust warnings
- Certificate chain incomplete — partial chain returned if intermediate certificates are not served

## How this service works

The trust layer for AI agents — 250+ independently tested data capabilities across 27 countries. Execute capabilities via REST, MCP, A2A, or x402 micropayments. Every call returns an audit record with cryptographic chain hashing.

## Output

Returns the full SSL/TLS certificate chain for the specified host, including each certificate in the chain with details such as issuer, subject, validity period, serial number, and signature algorithm. Also includes a cryptographic audit record with chain hashing for verifiability.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "host"
     ],
     "properties": {
      "host": {
       "type": "string"
      },
      "port": {
       "type": "integer"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/strale-ssl-certificate-chain-lookup-99244203/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.strale.io](https://www.zero.xyz/host/api.strale.io/llms.txt)