What is yacybot?
yacybot is the web crawler for YaCy, a decentralized peer-to-peer search engine that operates without central servers. The bot indexes content for the YaCy network, enabling distributed web search across participating computers in this open-source project. You can set up Agent Analytics to see when yacybot visits your website.
Category
| Example User Agent | yacybot (freeworld/global; amd64 Linux 6.18.33.2-microsoft-standard-WSL2; java 24.0.2; Etc/en) https://yacy.net/bot.html |
| Operated By | YaCy |
| Source | Official Website |
| Triggered By | Automated crawl |
| Used for AI Model Training | Not expected |
| Affects AI Chat & Search Visibility | Possibly |
| Expected To Follow Robots.txt | Yes |
Why Is yacybot Visiting My Website?
yacybot is adding new or changed pages to its search index. It may have discovered your site through links, a sitemap, or direct submission.
Should I Block yacybot?
No, unless you want to remove your pages from that search engine. yacybot supplies its index, so blocking it can eliminate your visibility and organic traffic there. Nearly every website should allow this category. For context, 7% of the top websites we track currently have robots.txt rules for yacybot.
How Do I Block yacybot Using Robots.txt?
Add this rule to your robots.txt file to block yacybot from accessing your website, or use Automatic Robots.txt to block all search engine crawlers at once. You can customize which pages are blocked by swapping out / for a different path.
User-agent: yacybot # https://knownagents.com/agents/yacybot
Disallow: /Insights for yacybot
As of October 29, 2026, this data reflects agent visits measured across thousands of websites using Agent Analytics, combined with daily scans of the top 1000 websites and their robots.txt files.
Robots.txt Compliance
Country of Origin
Robots.txt Blocked Percentage
Frequently Asked Questions
What Traffic Patterns Should I Expect From yacybot?
yacybot follows an algorithmic schedule shaped by your site's popularity, update cadence, and domain authority. It generally spreads requests across recurring crawl passes, throttles itself to limit server load, and respects crawl rules more reliably than most other bots.
Does yacybot Follow Robots.txt Rules?
yacybot is expected to follow robots.txt rules, so a disallow rule is the appropriate first step if you want to block it. Automatic Robots.txt can add and maintain that rule, while Agent Analytics lets you verify whether yacybot respects it.
Is yacybot Used for AI Model Training?
Not ordinarily. yacybot is not categorized as an AI training scraper or data provider, so AI model training is not its expected purpose.
Does Blocking yacybot Affect AI Search or Citations?
Blocking yacybot can remove your pages from the search engine it supplies. That may also affect AI products that rely on the same index, but it does not directly control unrelated AI search services.
Does yacybot Access Private Content?
No special access. yacybot can reach only content available to anonymous visitors and does not sign in. Make sure sensitive content is not public by mistake.
How Can I Verify a Request From yacybot?
Agent Analytics tracks yacybot visits in real time. You can also check your server logs for requests whose user-agent string contains "yacybot". Look for recurring passes that revisit changed pages and discover new ones. Because yacybot does not publish a verification method, any client can claim its identity and a log match is only a clue.