What is Splunk Synthetics?
Splunk Synthetics is the monitoring bot that proactively tests website performance, APIs, and user flows from global locations to detect and fix performance issues before customers are affected. You can set up Agent Analytics to see when Splunk Synthetics visits your website.
Overview
| Operated By | Splunk |
| Source | Official Website |
| Expected To Follow Robots.txt | No |
| Insights Last Updated | September 14, 2026 |
Do you operate this agent? Contact us to suggest an update.
Category
Expected Behavior
Splunk Synthetics'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.
Splunk Synthetics's User Agent
| User Agent | Mozilla/5.0 (X11; Linux x86_64; Splunk Synthetics) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36 |
How To Block Splunk Synthetics With Robots.txt
Add this rule to your robots.txt file to request that Splunk Synthetics 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: Splunk Synthetics # https://knownagents.com/agents/splunk-synthetics
Disallow: /Insights for Splunk Synthetics
As of September 14, 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
6% of top websites block Splunk Synthetics in their robots.txts.
Overall Developer Helper Traffic
0.8% of all web traffic came from developer helpers.
Frequently Asked Questions
Should I Block Splunk Synthetics?
Only if no one on your team relies on it. Splunk Synthetics may support uptime monitoring, performance tests, or audits. Blocking it without checking first can silently disrupt those workflows. For context, 6% of the top websites we track currently have robots.txt rules for Splunk Synthetics.
Does Splunk Synthetics Follow Robots.txt Rules?
No. Splunk Synthetics is not expected to follow robots.txt rules, 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 Splunk Synthetics Access Private Content?
Only when configured with access. A team may grant Splunk Synthetics credentials to monitor staging sites or private health endpoints. Without those credentials, it sees only public pages.
How Can I Tell if Splunk Synthetics Is Visiting My Website?
Agent Analytics tracks Splunk Synthetics visits in real time. You can also check your server logs for requests whose user-agent string contains "Splunk Synthetics". Look for repeated checks of the same pages or endpoints at regular intervals. Because Splunk Synthetics does not publish a verification method, any client can claim its identity and a log match is only a clue.
Why Is Splunk Synthetics Visiting My Website?
Someone, most likely on your own team, configured Splunk Synthetics to check your site. Uptime monitors, performance testers, and audit tools visit only the sites or endpoints they are told to watch.