Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add hypnguyen1209/offensive-claude --skill recon-osintgit clone --depth 1 https://github.com/hypnguyen1209/offensive-claudeWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/hypnguyen1209/offensive-claude/recon-osint)<a href="https://agentmods.dev/skills/hypnguyen1209/offensive-claude/recon-osint"><img src="https://agentmods.dev/badge/skills/hypnguyen1209/offensive-claude/recon-osint/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/hypnguyen1209/offensive-claude/recon-osint"><img src="https://agentmods.dev/badge/skills/hypnguyen1209/offensive-claude/recon-osint.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00074 | $0.02505 |
| Opus 5 | $0.00037 | $0.01252 |
| Sonnet 5 | $0.00015 | $0.00501 |
| Haiku 4.5 | $0.00007 | $0.00250 |
Grade A, and why
recon-osint scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 115 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Reconnaissance & OSINT
When to Activate
- A new engagement begins and you need a full external attack-surface map for a set of root domains / ASNs.
- Expanding scope: pivoting from one discovered asset (subdomain, IP block, cloud account) to the rest of the estate.
- Hunting dangling DNS / subdomain-takeover candidates, including S3 buckets referenced by CI/CD assets.
- Building a target profile for social engineering / initial access (emails, usernames, breach + infostealer exposure).
- Discovering leaked secrets in public GitHub/GitLab orgs and exposed cloud storage.
- Triaging which discovered CVEs actually matter (KEV + EPSS + exposure) before weaponization.
Technique Map
| Technique | ATT&CK | CWE | Reference | Script |
|---|---|---|---|---|
| Passive subdomain enum (subfinder/amass/CT logs) | T1590.002, T1596.001 | CWE-200 | references/subdomain-discovery.md | scripts/recon_orchestrator.py |
| DNS brute / permutation / resolution (puredns/alterx/dnsx) | T1595.002, T1590.002 | CWE-200 | references/subdomain-discovery.md | scripts/recon_orchestrator.py |
| ASN → CIDR → reverse-DNS expansion | T1590.005, T1596.005 | CWE-200 | references/subdomain-discovery.md | scripts/recon_orchestrator.py |
| HTTP probing + tech fingerprint (httpx) | T1595.002, T1592.002 | CWE-200 | references/attack-surface-mapping.md | scripts/recon_orchestrator.py |
| Headless crawling + archive URLs (katana/gau) | T1595.002, T1593.003 | CWE-200 | references/attack-surface-mapping.md | scripts/js_secret_hunter.py |
| JavaScript endpoint / secret extraction | T1593.003, T1552.001 | CWE-540 | references/attack-surface-mapping.md | scripts/js_secret_hunter.py |
| Subdomain takeover (dangling CNAME/NS) | T1583.001, T1584.001 | CWE-350 | references/subdomain-takeover.md | scripts/subdomain_takeover.py |
| Deleted-S3 takeover → supply-chain pivot | T1583.001, T1195.002 | CWE-350 | references/subdomain-takeover.md | scripts/subdomain_takeover.py |
| Multi-cloud bucket/blob enum (cloud_enum) | T1580, T1596.005 | CWE-732 | references/cloud-saas-recon.md | scripts/cloud_asset_enum.py |
| Azure tenant outsider recon (AADInternals) | T1590.001, T1589 | CWE-200 | references/cloud-saas-recon.md | scripts/cloud_asset_enum.py |
| GitHub/GitLab dorking + secret scanning | T1593.003, T1213.003 | CWE-540 | references/cloud-saas-recon.md | scripts/cloud_asset_enum.py |
| Email/username harvesting (theHarvester) | T1589.002, T1591 | CWE-200 | references/breach-credential-intel.md | scripts/breach_intel.py |
| Breach + infostealer credential intel (HIBP/DeHashed) | T1589.001, T1596 | CWE-522 | references/breach-credential-intel.md | scripts/breach_intel.py |
| CVE enrichment + prioritization (NVD/EPSS/KEV) | T1592.002, T1596 | CWE-1395 | references/cve-exploit-intel.md | scripts/cve_prioritizer.py |
| Shodan InternetDB exposure → CVE mapping | T1596.005, T1595.002 | CWE-200 | references/cve-exploit-intel.md | scripts/cve_prioritizer.py |
What ships with it
14 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- references/attack-surface-mapping.md 7.3 KB
- references/breach-credential-intel.md 8.1 KB
- references/cloud-saas-recon.md 8.3 KB
- references/cve-exploit-intel.md 8.1 KB
- references/subdomain-discovery.md 7.6 KB
- references/subdomain-takeover.md 7.5 KB
- scripts/breach_intel.py 9.9 KB runs code
- scripts/cloud_asset_enum.py 8.6 KB runs code
- scripts/cve_prioritizer.py 8.8 KB runs code
- scripts/hackerone_public_recon.py 5.1 KB runs code
- scripts/js_secret_hunter.py 7.4 KB runs code
- scripts/recon_orchestrator.py 8.2 KB runs code
- scripts/subdomain_takeover.py 8.4 KB runs code
- scripts/wordlist_ranker.py 4.3 KB runs code
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 12d ago First seen · 115 lines · 74 tokens per session scan A ea057299a384
recon-osint is a skill published in the GitHub repository hypnguyen1209/offensive-claude (357 stars, last pushed 25d ago), licensed MIT. It adds 74 tokens to every session and 2,505 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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