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Underminer

wordpress.org·SEO & content marketing

Underminer is a free WordPress plugin designed to protect website content from being used to train AI models. It blocks well-behaved AI crawlers via robots.txt and sabotages content for bots that ignore these rules, while allowing search engines to function normally. Ideal for site owners who want to safeguard their content from AI data scraping.

FreeMIT
WebCloud-managed
U
Visit wordpress.org↗
⭐2.4k
stars
🍴278
forks
✓5
features
📅2015
since

Overview

5 features

Underminer is a SEO & content marketing product. It focuses on preventing unauthorized use of website content for AI model training by blocking and sabotaging AI crawlers. Underminer is a consumer product aimed at wordPress site owners concerned about AI data scraping. Underminer is free to use. It runs on the web.

Behind Underminer is Tellyworth, and the product first shipped in 2015. The project is developed in the open on GitHub with 2.4k stars and 23 commits in the last 90 days. Among its 5 catalogued features are AI crawler blocking, robots.txt rules, and content sabotage. The interface is available in English and Wolof.

  • ✓AI crawler blocking
  • ✓Robots.txt rules
  • ✓Content sabotage
  • ✓Invisible to users
  • ✓IP verification

Tags

ai-crawler-blockingcontent-protectionrobots-txt

Built with & integrations

Runs on
BrowserCloud-managed

Trust & compliance

LicenseMIT
Verified signals
✓ HTTPS✓ Privacy Policy✓ Free tier✓ GitHub · ★ 2.4k✓ Active maintenance✓ Multi-language
Legal
Privacy Policy →

Recent events

Latest indexed changes and source events

  1. IndexedJun 26, 1:54 AM

    Listing verified by the PulseGate indexer

    Source: PulseGate indexerOpen ↗

Frequently asked questions about Underminer

What is Underminer?
Underminer focuses on preventing unauthorized use of website content for AI model training by blocking and sabotaging AI crawlers. It is catalogued under SEO & content marketing on PulseGate.
Who should use Underminer?
Underminer is a consumer product built for wordPress site owners concerned about AI data scraping.
Does Underminer have a free plan?
Yes — Underminer is free to use.
What platforms does Underminer run on?
Underminer runs on the web.
Is Underminer still active?
PulseGate's liveness checks currently classify Underminer as active. The GitHub repository shows 23 commits in the last 90 days.
What tools are similar to Underminer?
Similar tools tracked by PulseGate include Block AI Crawlers, AI Deny, and Disable AI.Block AI CrawlersAI DenyDisable AI
Who develops Underminer?
Underminer is developed by Tellyworth.
How long has Underminer been around?
Underminer first shipped in 2015.

At a glance

Pricing
Free
Platforms
Web
Languages
English, Wolof
Open source
Yes · ★ 2.4k
License
MIT
First seen
Mar 8, 2022
Activity
🟢 Active
Status
🟢 Active
Built for
WordPress site owners concerned about AI data scraping
Model
B2C
Solves
Preventing unauthorized use of website content for AI model training by blocking and sabotaging AI crawlers.

Developer

Tellyworth
Community-driven
↗ GitHub

Open source

View on GitHub →
⭐ Stars
2,364
🍴 Forks
278
Open issues
0
Last commit
1mo ago
Commits 90d
23
Contributors
109
Authorship
Community-driven
Default branch
master
Latest release
v1.4.0 · 1mo ago

Live coverage

Confidence
High · 96
Indexed
Jun 26, 2026
Lifecycle
Alive
Activity
Active
First seen
Mar 2022
Last seen
4w ago
Identity audit (9)
Entity ID
cmqua5prh030j114lvlhczqcg
Slug
underminer-wordpress-org
Verification state
Indexed for public listing
Claim / listing state
Unclaimed · listed: yes
Index status
Included in index
Latest evidence snapshot
Jun 26, 2026
Timeline basis
Indexed-at chronology (no inferred launch/funding milestones).
Last updated
Jul 5, 2026
Canonical URL
https://wordpress.org/plugins/underminer

Similar apps

Other apps tracked under the same category.

  • Block AI Crawlers
    wordpress.org
  • AI Deny
    wordpress.org
  • Disable AI
    wordpress.org
  • AI Scraping Protector
    wordpress.org
  • Agent AI Bot Protect
    wordpress.org
  • Hide AI
    wordpress.org