Can I use FrameAssembly commercially?

Yes. FrameAssembly is released under the permissive MIT License. You can use it free of charge in commercial environments, internal monitoring and firewall testing workflows, client consulting, and proprietary CI/CD pipelines with no royalties or copyleft restrictions—just preserve the copyright and license notice if you redistribute the software itself.

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FrameAssembly Playground

Test .fasm packet scripts, import & sanitize existing .pcap files locally, and share reproducer links—before installing the local CLI and VS Code extension.

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Scenario:

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File:

// 1. Name the devices on your network
host client { ip 10.0.10.50 }
host server { ip 10.0.10.80 }
host nms    { ip 10.0.10.100 }
// 2. List the packets (1 line = 1 packet)
flow web_check(c, s) {
    c -> s tcp syn srcport 51234 dstport 80 wait 1ms
    c <- s tcp syn ack wait 1ms
    c -> s tcp ack wait 1ms
    c -> s http get uri "/health" wait 2ms
    c <- s http status 200 body "OK" wait 1ms
}
flow snmp_alert(srv, collector) {
    srv -> collector snmp2 trap community "public" wait 2ms
}
// 3. Build the .pcap capture
compile {
    web_check(client, server)
    snmp_alert(server, nms)
}

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Step Up to Local CLI & Official VS Code Extension

This Playground is a zero-install browser sandbox. For Git-tracked packet suites, CI pipelines, and full local IDE authoring, install the Rust CLI and VS Code extension:

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