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playbooks

scripts & tools.

when a problem repeats, i script it. when the script is useful, it lands here with setup, commands, and troubleshooting.

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  1. Parse Email Headers Fast (hoptrace)

    8/24/2025

    Turn jumbled headers into a readable hop trail with SPF/DKIM/DMARC snapshots — evidence only.

    playbooksemaildeliverabilitysec-toolsrepo

  2. Free the Port: Diagnose and Kill Local Listeners (whoport)

    8/18/2025

    When port 3000 is 'already in use', here’s the fast way to identify and free it on macOS, Linux, or Windows.

    playbooksnetworkingdev-toolsrepo

  3. Email Auth: DNS-Only Audit

    8/16/2025

    Tiny Python CLI to quickly check SPF, DMARC, MTA-STS, TLS-RPT, and optional DKIM selectors.

    email securityspfdmarcdkimmta-ststls-rptplaybookrepo