What is PWABuilderHttpAgent?
PWABuilderHttpAgent analyzes websites for Progressive Web App capabilities, checking for web manifests, service workers, and other PWA features to help developers build and publish progressive web apps. Agent Analytics can track when it visits your website.
Overview
| Operated By | Microsoft |
| Source | Official Website |
| Expected To Follow Robots.txt | No |
| Insights Last Updated | August 11, 2026 |
Do you operate this agent? Contact us to suggest an update.
Category
Expected Behavior
PWABuilderHttpAgent's traffic often follows fixed intervals like a cron job. Activity may consist of short recurring checks or occasional intensive bursts, but it usually remains limited to a specific set of pages or endpoints.
PWABuilderHttpAgent's User Agent
| User Agent | Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36 Edg/139.0.0.0 PWABuilderHttpAgent PWABuilderHttpAgent |
How To Block PWABuilderHttpAgent With Robots.txt
Add this rule to your robots.txt file to request that PWABuilderHttpAgent not access your website, or use Automatic Robots.txt to request the same of all developer helpers at once. You can customize which pages are blocked by swapping out / for a different path.
User-agent: PWABuilderHttpAgent # https://knownagents.com/agents/pwabuilderhttpagent
Disallow: /Global Statistics for PWABuilderHttpAgent
As of August 11, 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 Blocked Percentage
Country of Origin
Robots.txt Blocking Trend
0% of top websites block PWABuilderHttpAgent in their robots.txt files.
Overall Developer Helper Traffic
0.3% of all web traffic came from developer helpers.
Frequently Asked Questions
Should I Block PWABuilderHttpAgent?
Only if no one on your team relies on it. PWABuilderHttpAgent may support uptime monitoring, performance tests, or audits. Blocking it without checking first can silently disrupt those workflows. Almost none of the top websites we track currently have robots.txt rules for PWABuilderHttpAgent.
Does PWABuilderHttpAgent Follow Robots.txt Rules?
No. PWABuilderHttpAgent is not expected to follow robots.txt directives, so a disallow rule only communicates your preference. Enforce the block with firewall or server rules, then use Agent Analytics to verify that its requests stop.
Does PWABuilderHttpAgent Access Private Content?
Only when configured with access. A team may grant PWABuilderHttpAgent credentials to monitor staging sites or private health endpoints. Without those credentials, it sees only public pages.
Why Is PWABuilderHttpAgent Visiting My Website?
Someone, most likely on your own team, configured PWABuilderHttpAgent to check your site. Uptime monitors, performance testers, and audit tools visit only the sites or endpoints they are told to watch.
How Can I Tell if PWABuilderHttpAgent Is Visiting My Website?
Agent Analytics tracks PWABuilderHttpAgent visits in real time alongside every other known AI agent, crawler, and scraper. You can also check your server logs for requests whose user-agent string contains "PWABuilderHttpAgent". Look for repeated checks of the same pages or endpoints at regular intervals. Because PWABuilderHttpAgent does not publish a verification method, any client can claim its identity and a log match is only a clue.