synthetic-monitoring-agent

monitoring synthetic-monitoring-agent\/

Grafana synthetic monitoring agent probing endpoints for availability

About this crawler

synthetic-monitoring-agent is a web crawler identified by the regular-expression pattern synthetic-monitoring-agent\/ in the User-Agent request header. It is categorised as monitoring. Use the regex above to detect, log, allow, or block synthetic-monitoring-agent traffic in your web server, CDN edge rules, or robots.txt.

Block-rate · top 25k sites

No block-rate data for this crawler.

Technical details

Name: synthetic-monitoring-agent
Pattern: synthetic-monitoring-agent\/
Tags: monitoring
Reference: https://grafana.com/
Added: 2026/04/17
rDNS suffixes: .grafana.com, .grafana.net
Instances: 1 known sample(s)

rDNS verification (FCrDNS)

Verify a request is genuinely synthetic-monitoring-agent with forward-confirmed reverse DNS: the client IP's PTR record must end in one of the suffixes below and a forward A/AAAA lookup of that hostname must return the same IP. UA strings alone are spoofable; FCrDNS is not.

.grafana.com
.grafana.net

Sample User-Agent strings

synthetic-monitoring-agent/v0.20.1-0-g66af84ad (linux amd64; 66af84ad6a8755895d4b69606281ca7354c1589a; 2024-02-12 16:50:07+00:00; +https://github.com/grafana/synthetic-monitoring-agent)

Block this crawler

robots.txt — disallow synthetic-monitoring-agent:

User-agent: synthetic-monitoring-agent Disallow: /

Apache .htaccess — return 403:

RewriteEngine On RewriteCond %{HTTP_USER_AGENT} synthetic-monitoring-agent\/ [NC] RewriteRule .* - [F,L]

Nginx — return 403 inside a server block:

if ($http_user_agent ~* "synthetic-monitoring-agent\\/") { return 403; }

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