# Agent JSON Reliability – TLS Check

> Agent JSON Reliability – TLS Check is a paid API for AI agents from agent-json-reliability.onrender.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-01).

Checks the TLS/SSL certificate validity and security of a given URL for use in JSON-reliability pipelines for AI agents.

## Facts

- Endpoint: POST https://agent-json-reliability.onrender.com/v1/url/tls-check?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-json-reliability-tls-check-1bbda09e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_l4z-ZMhPgBYZgEPxVFfxG

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 agent-json-reliability-tls-check-1bbda09e -d '<json body>'
```

Example prompt: Before my agent fetches JSON from https://api.example.com/data, can you check whether that URL has a valid TLS certificate and is properly secured?

## When to prefer this

Use this endpoint when an AI agent needs to verify that a remote URL is secured with a valid TLS certificate before initiating a JSON fetch or API call, especially in reliability-sensitive pipelines where expired or invalid certificates could cause silent failures.

## Known failure modes

- URL is unreachable or times out — ok: false or error response
- Domain has expired or invalid certificate — ok: false
- Malformed URL input — validation error
- Non-HTTPS URL provided — may return error or ok: false
- Payment not authorized — 402 Payment Required

## How this service works

Deterministic JSON repair and JSON Schema validation for AI agents. Free MCP, inspect, validate, repair. Paid POST /v1/json/reliable 0.003 USDC via x402 on Base.

## Output

Returns a JSON object with an `ok` boolean indicating whether the target URL passed the TLS certificate check, confirming the endpoint is reachable over a valid HTTPS connection.

## Response schema (JSON Schema)

```json
{
 "example": {
  "ok": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-json-reliability-tls-check-1bbda09e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent-json-reliability.onrender.com](https://www.zero.xyz/host/agent-json-reliability.onrender.com/llms.txt)