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Callstack Engineers
@callstackio
We ship cross-platform products at AI speed. Training LLMs (Apex). React Native Core Contributors & React Foundation Members. Bringing you @AgentConf.
Wroclaw, Poland
callstack.com
Joined August 2016
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  • user avatar
    Callstack Engineers
    @callstackio
    Aug 10
    Kewin (@Q1w1N) shares a view we probably all have at this point: nobody needs more vague AI talk. What we do need is a clearer way to judge where these tools are genuinely useful. In the next livestream, we take that question into React Native and ask whether a specialized
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    Callstack Engineers
    @callstackio
    Aug 10
    A QA agent should return evidence that a reviewer can inspect, not only a pass or fail. This clip from our last webinar covers five rules for keeping those runs reliable. For a full walk-through of the PR-to-device workflow and a live behavior-review demo, watch the webinar
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    Callstack Engineers
    @callstackio
    Aug 6
    If you're building an agent for manual testing mobile apps, check agent-device as an efficient "backend" for interactions. Works through Node.js, CLI, and MCP. However you like it.
    user avatar
    Michał Pierzchała
    @thymikee
    Aug 6
    We cut the agent loop in half without making it slower. Old: snapshot → act → snapshot → act → … New: snapshot → act --settle → act --settle → … ⊙ 30% fewer steps ⊙ 50% less variance ⊙ Same total time ⊙ Fewer tokens @agent_device just got a lot more reliable
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    Callstack Engineers
    @callstackio
    Aug 6
    People are tired of AI talk for a reason. A lot of it stays vague, repetitive, and detached from the work. We’re giving our livestreams a sharper format to do something more useful with the topic: look at AI from a developer’s point of view, stay close to real workflows, and
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