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CE

Cert Chief

GoodBotVerifiedBOT

Cert Chief is a certificate monitoring tool that periodically crawl web properties to check their configuration and reports problems and changes when they are detected. Operated by Chief Tools.

GoodBot
Assessment
Security
Category
BOT
Kind
1
Data sources
AI-generated summary, drawn from Cloudflare, operator docs, and community data

What is Cert Chief?

Cert Chief is a web crawler operated by Chief Tools. Cert Chief is a certificate monitoring tool that periodically crawl web properties to check their configuration and reports problems and changes when they are detected.

Helpful — Verified, safe crawler. Respects robots.txt and provides operator documentation.

Identification

Bot name
Cert Chief
Operator
Chief Tools
Category
Security
Kind
BOT
Verification
Verified bot
Cloudflare slug
cert-chief
User-agent patterns
CertChief/
User-agent string
CertChief/8714fb40 (+https://cert.chief.app)
Main use cases
Security scanningVulnerability detectionThreat assessment

Why it crawls your site

Cert Chief crawls websites to scan for security vulnerabilities and potential threats. It is operated by Chief Tools as part of their security infrastructure. If you see this bot in your server logs, it is a verified crawler and generally safe.

Block or allow Cert Chief

Block it

Add a Disallow rule for CertChief/ in your robots.txt file. You can also block at the server level using your web server configuration or CDN firewall rules to filter requests matching the user-agent string.

# Block Cert Chief from crawling your entire site
User-agent: CertChief/
Disallow: /

# Allow Cert Chief full access
User-agent: CertChief/
Allow: /
Allow & verify

Ensure your robots.txt allows CertChief/. Verify requests are genuine by checking the user-agent string and referring to Chief Tools's documentation.

Traffic & trends

Cloudflare Radar traffic

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Data sources

This profile is compiled from the following sources.

CloudflareRadar
Last updated July 26, 2026