Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add Security-Phoenix-demo/security-skills-claude-code/plugin install phoenix-cti-searchWrote 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/security-phoenix-demo/security-skills-claude-code/cti-domain-research)<a href="https://agentmods.dev/skills/security-phoenix-demo/security-skills-claude-code/cti-domain-research"><img src="https://agentmods.dev/badge/skills/security-phoenix-demo/security-skills-claude-code/cti-domain-research/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/security-phoenix-demo/security-skills-claude-code/cti-domain-research"><img src="https://agentmods.dev/badge/skills/security-phoenix-demo/security-skills-claude-code/cti-domain-research.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00189 | $0.02536 |
| Opus 5 | $0.00095 | $0.01268 |
| Sonnet 5 | $0.00038 | $0.00507 |
| Haiku 4.5 | $0.00019 | $0.00254 |
Grade A, and why
cti-domain-research 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 yesterday.
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 — 277 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CTI Domain Research
Structured threat intelligence search across 300+ curated security domains with optional NotebookLM ingestion.
Customization
Configure these settings to personalize your CTI research workflow. All are optional — the skill works with sensible defaults.
| Setting | Description | Default | How to Set |
|---|---|---|---|
| Search provider | Which search API to use | Brave Search | SEARCH_PROVIDER=brave in .env |
| Brave API key | Your Brave Search API key | — (required) | BRAVE_SEARCH_API_KEY=... in .env |
| SerpAPI key | Alternative search provider | — | SERPAPI_KEY=... in .env |
| Google CSE key + ID | Alternative search provider | — | GOOGLE_CSE_KEY=... + GOOGLE_CSE_ID=... in .env |
| NotebookLM notebook ID | Target notebook for --notebooklm flag |
— | NOTEBOOKLM_NOTEBOOK_ID=... in .env or --notebook-id flag |
| Default result count | Results per tier | 10 | --count N flag per query |
| Default recency | How far back to search | 90 days | --since DAYS flag per query |
| Custom domains | Add your own security sources | 595 built-in | Edit data/domains.txt and data/tier-map.json |
Setup steps:
- Copy
.env.exampleto.envin the plugin directory - Add your search API key (Brave recommended — 2,000 free requests/month)
- Optionally set your NotebookLM notebook ID
- Restart Claude Code
cd ${CLAUDE_PLUGIN_ROOT}
cp .env.example .env
# Edit .env with your API keys
Adding custom domains:
# Add a domain (one per line)
echo "your-security-blog.com" >> data/domains.txt
# Add tier mapping
# Edit data/tier-map.json and add:
# "your-security-blog.com": { "tier": 3, "authority": 70 }
Workflow
1. Parse query + flags
2. Select domain tier(s) based on query type
3. Execute scoped web searches (site: operator per domain batch)
4. Deduplicate + rank results by recency and source authority
5. Extract: title, source, date, summary, key IOCs/TTPs/CVEs mentioned
6. [Optional] Push findings to NotebookLM via connector plugin
7. Return structured CTI brief
What ships with it
4 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.
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.
- yesterday First seen · 277 lines · 189 tokens per session scan A 1fb159d7b847
cti-domain-research is a skill published in the GitHub repository Security-Phoenix-demo/security-skills-claude-code (70 stars, last pushed yesterday), licensed MIT. It adds 189 tokens to every session and 2,536 once invoked, about $0.0009 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 2026-09-11.
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