# Domain OSINT, TLS Certificate & Security Headers Recon

> Domain OSINT, TLS Certificate & Security Headers Recon is a paid API for AI agents from github-audit.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 (issuer, expiry), and HTTP security header grading for a target domain.

## Facts

- Endpoint: GET https://github-audit.agentdiet.dev/v1/dns-whois-tls-recon?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: github-audit.agentdiet.dev
- Website: https://github-audit.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/github-audit-agentdiet-dev-domain-osint-tls-certificate-security-e7c595b6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_avnboHcp4YTdmYCMSaswN

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 github-audit-agentdiet-dev-domain-osint-tls-certificate-security-e7c595b6
```

Example prompt: Can you run a full DNS, TLS certificate, and security headers recon on stripe.com — I want to know the IPv4/IPv6 addresses, who issued their cert and when it expires, and what their HTTP security grade looks like?

## When to prefer this

Choose this endpoint when you need a fast, all-in-one passive OSINT snapshot of a domain's live infrastructure — DNS records, TLS certificate health, and HTTP security posture — without running active exploit scans. Ideal for pre-acquisition due diligence, continuous certificate monitoring, vendor security assessments, or competitor recon where a single call covering DNS + TLS + headers is more efficient than three separate tools.

## Known failure modes

- Domain does not exist or fails DNS resolution — returns error or empty DNS records
- Domain has no TLS certificate (HTTP-only) — TLS fields may be null or missing
- Domain is unreachable or times out during live probe — returns connection error
- Invalid domain format provided — returns validation error
- Security headers absent on the target — returns empty or low-grade result

## 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://github-audit.agentdiet.dev/v1/dns-whois-tls-recon)

## Output

Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate details (issuer, expiry date, validity status), and an HTTP security headers grade/analysis for the specified domain.

## 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/github-audit-agentdiet-dev-domain-osint-tls-certificate-security-e7c595b6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from github-audit.agentdiet.dev](https://www.zero.xyz/host/github-audit.agentdiet.dev/llms.txt)