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 Crawlio-app/crawlio-browser --skill investigategit clone --depth 1 https://github.com/Crawlio-app/crawlio-browserWrote 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/crawlio-app/crawlio-browser/investigate)<a href="https://agentmods.dev/skills/crawlio-app/crawlio-browser/investigate"><img src="https://agentmods.dev/badge/skills/crawlio-app/crawlio-browser/investigate.svg" alt="Measured on agentmods" 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 | $0.00032 | $0.01105 |
| Opus 5 | $0.00016 | $0.00553 |
| Sonnet 5 | $0.00006 | $0.00221 |
| Haiku 4.5 | $0.00003 | $0.00111 |
Grade A, and why
investigate 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 8d 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 — 126 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Investigate
Deep-dive investigation of a single website. Produces structured findings across technology, tracking, performance, security, accessibility, and data-structure dimensions.
When to Use
- Audit tech stack, frameworks, third-party dependencies
- Analyze tracking health (GA4, GTM, FB Pixel) and data layer state
- Measure performance, security, accessibility
- Detect structured data (tables, JSON-LD)
Protocol
Acquire -> Normalize -> Analyze with Evidence Mode.
1. Connect
connect_tab({ url: "https://target.com", background: true })
2. Acquire + Normalize
const page = await smart.extractPage(); // 7 parallel ops, typed gaps
const tech = await smart.detectTechnologies(); // fingerprint-based tech detection
const tracking = await smart.parseTrackingPixels();
const validation = await smart.validateTracking();
const dataLayer = await smart.inspectDataLayer();
const tables = await smart.detectTables();
// page.gaps[] tells you what failed — check before trusting supplementary data
// A gap with reducesConfidence:true auto-caps findings in that dimension
Use smart.scrollCapture() when visual evidence is needed.
3. Analyze — produce findings
smart.finding({
claim: `Site runs ${tech.technologies.length} detected technologies`,
evidence: tech.technologies.map(t => `${t.name} (${t.confidence})`),
sourceUrl: page.capture.url, confidence: "high",
method: "detectTechnologies", dimension: "technology"
});
if (tracking.pixels?.length) {
smart.finding({
claim: `${tracking.pixels.length} tracking pixels detected`,
evidence: tracking.pixels.map(p => `${p.vendor}/${p.pixelId}: ${p.eventCount} fires (${p.uniqueEventNames.join(', ')})`),
sourceUrl: page.capture.url, confidence: "high",
method: "parseTrackingPixels", dimension: "tracking"
});
}
if (validation.issues?.length) {
smart.finding({
claim: `${validation.issues.length} tracking validation issues`,
evidence: validation.issues.map(i => `${i.parameter || i.code}: ${i.message}`),
sourceUrl: page.capture.url, confidence: "medium",
method: "validateTracking", dimension: "tracking"
});
}
if (page.performance) {
smart.finding({
claim: `LCP: ${page.performance.webVitals?.lcp || 'n/a'}ms`,
evidence: [`CLS: ${page.performance.webVitals?.cls}`, `FID: ${page.performance.webVitals?.fid}`],
sourceUrl: page.capture.url,
confidence: page.gaps.some(g => g.dimension === "performance") ? "medium" : "high",
method: "extractPage", dimension: "performance"
});
}
if (page.security) {
const protocol = page.security.certificate?.protocol || "unknown";
smart.finding({
claim: `Security state: ${page.security.securityState || 'unknown'} (${protocol})`,
evidence: [
`mixedContent: ${Boolean(page.security.mixedContent)}`,
`certificate issuer: ${page.security.certificate?.issuer || 'unavailable'}`
],
sourceUrl: page.capture.url, confidence: "high",
method: "extractPage", dimension: "security"
});
}
if (page.accessibility) {
smart.finding({
claim: `${page.accessibility.imagesWithoutAlt} images missing alt text`,
evidence: [`Landmarks: ${page.accessibility.landmarkCount}`, `Nodes: ${page.accessibility.nodeCount}`],
sourceUrl: page.capture.url, confidence: "high",
method: "extractPage", dimension: "accessibility"
});
}
if (tables.length) {
smart.finding({
claim: `${tables.length} table-like structures detected`,
evidence: tables.map(t => `${t.selector}: ${t.score} score`),
sourceUrl: page.capture.url, confidence: "medium",
method: "detectTables", dimension: "data-structure"
});
}
return { findings: smart.findings(), gaps: page.gaps };
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.
- 8d ago First seen · 126 lines · 32 tokens per session scan A 3ecb3297524b
investigate is a skill published in the GitHub repository Crawlio-app/crawlio-browser (6 stars, last pushed 29d ago), licensed Apache-2.0. It adds 32 tokens to every session and 1,105 once invoked, about $0.0002 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 2026-08-31.
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