# Domain OSINT, TLS Certificate & Security Headers Recon

> Domain OSINT, TLS Certificate & Security Headers Recon is a paid API for AI agents from json-repair.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).

Performs live DNS resolution (IPv4/IPv6), TLS certificate inspection, and HTTP security header grading for a given domain.

## Facts

- Endpoint: GET https://json-repair.agentdiet.dev/v1/dns-recon?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: json-repair.agentdiet.dev
- Website: https://json-repair.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/json-repair-agentdiet-dev-domain-osint-tls-certificate-security-9d37e009
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GGLiD8ryLmim5VL8xLi_p

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 json-repair-agentdiet-dev-domain-osint-tls-certificate-security-9d37e009
```

Example prompt: Can you run a full DNS and TLS security recon on stripe.com — I want to see its IPv4/IPv6 resolution, who issued its SSL cert and when it expires, and its HTTP security header grade?

## When to prefer this

Choose this endpoint when you need a quick, live snapshot of a domain's DNS resolution, TLS certificate health, and HTTP security posture in a single call. It is especially useful for security OSINT workflows, vendor risk assessments, pre-acquisition due diligence, or monitoring certificate expiry — without needing to manually run dig, openssl, or curl security header checks separately.

## Known failure modes

- Domain does not exist or fails DNS resolution — empty or error response
- Domain has no HTTPS endpoint — TLS certificate fields will be absent or null
- Network timeout reaching the target domain — partial or error response
- Invalid domain format provided — validation error returned
- Domain is behind a CDN that masks real IP resolution — IPs may reflect CDN nodes rather than origin

## How this service works

Inspects live IPv4/IPv6 DNS resolution, TLS certificate issuer/expiry, and HTTP security grade. (Live x402 v2, IETF MPP & MCP endpoint at https://json-repair.agentdiet.dev/v1/dns-recon)

## Output

Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate details (issuer, expiry date, validity status), and an HTTP security header grade reflecting the presence and quality of headers like HSTS, CSP, X-Frame-Options, and others.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "domain"
 ],
 "properties": {
  "domain": {
   "type": "string",
   "minLength": 1,
   "description": "Target domain name (e.g. anthropic.com, openai.com) for DNS, TLS certificate, and security header OSINT"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/json-repair-agentdiet-dev-domain-osint-tls-certificate-security-9d37e009/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from json-repair.agentdiet.dev](https://www.zero.xyz/host/json-repair.agentdiet.dev/llms.txt)