<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"><channel><title>blog.cygankiewicz.com — English articles</title><description>Articles in English about distributed systems, AI agents and black-box testing.</description><link>https://blog.cygankiewicz.com/</link><language>en</language><item><title>I stress-tested Meta Muse until its agent control plane started timing out</title><link>https://blog.cygankiewicz.com/en/meta-muse-black-box-testing/</link><guid isPermaLink="true">https://blog.cygankiewicz.com/en/meta-muse-black-box-testing/</guid><description>Four spawn experiments against a black-box multi-agent runtime, six database lock timeouts recovered from its durable trace, and a careful look at what that evidence does and does not show.</description><pubDate>Sun, 13 Sep 2026 00:00:00 GMT</pubDate><category>ai-agents</category><category>reverse-engineering</category><category>distributed-systems</category><category>postgresql</category></item></channel></rss>