domain-intel SKILL.md skillA
domain-intel from metaspartan/cybara is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add metaspartan/cybara/domain-intel@git:20260703.247aff5Pins git:20260703.247aff5 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- metaspartan/cybara
- Path
skills/domain-intel/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260703.247aff5, committed Jul 3, 2026
- Size
- 1,994 bytes
- Repository stars
- 32
- License
- MIT
Passive domain reconnaissance: DNS, TLS certificate, WHOIS, Certificate Transparency, and availability signals.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Domain Intel
Use this for passive infrastructure questions about domains: DNS records, TLS expiry, WHOIS, subdomains from certificate transparency, and registration/availability signals.
This is not a vulnerability scan. Do not port scan or send exploit payloads under this skill.
## Quick Checks
DNS:
```bash
dig A example.com +short
dig AAAA example.com +short
dig MX example.com +short
dig TXT example.com +short
dig NS example.com +short
```
TLS certificate:
```bash
echo | openssl s_client -servername example.com -connect example.com:443 2>/dev/null \
| openssl x509 -noout -subject -issuer -dates -ext subjectAltName
```
WHOIS:
```bash
whois example.com | sed -n '1,120p'
```
Certificate Transparency:
```bash
python3 - <<'PY'
import json, sys, urllib.parse, urllib.request
domain = sys.argv[1] if len(sys.argv) > 1 else "example.com"
url = "https://crt.sh/?" + urllib.parse.urlencode({"q": f"%.{domain}", "output": "json"})
with urllib.request.urlopen(url, timeout=20) as res:
rows = json.load(res)
names = sorted({name.strip().lower() for row in rows for name in row.get("name_value", "").splitlines() if name.strip().endswith(domain)})
for name in names[:200]:
…Read the whole file at its exact version.
How to install
mdr add metaspartan/cybara/domain-intel@sha256:15cfc6385083fa1dThe line at the top of this page pins the label git:20260703.247aff5, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_o3a3iyzubt27lqfp)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jul 3, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (1994 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
metaspartan/cybara · 32 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_o3a3iyzubt27lqfp GET https://markdownregistry.com/api/v1/resolve?ref=metaspartan/cybara/domain-intel GET https://markdownregistry.com/api/v1/blob/15cfc6385083fa1db1910dc7718301eec31879cc7b1dd60d2f1314b9bc810d95
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.