§ whyisthisdown_

§ whyisthisdown //notes from the night shift

Observability, incidents,
and reliable systems — in practice.

Writing for engineering teams on observability, incident analysis, and building resilient systems. No frameworks-of-the-week — just what breaks and how to tell.

Read articles 15 articles published
LatestAug 31, 2026

Reviewed-by: Nobody

A High-weight Scorecard check gives 10/10 to a repo nobody reviewed. Four of five paths never look at who approved anything.

[supply-chain][openssf][governance]
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§ latest writing

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  1. 7 min readmcpsdkprotocol

    The Fossil Record

    A dead protocol revision, fossilised in a stable SDK's type system. Why hasattr is not feature detection, and the ninety-second habit that catches the whole class.

  2. 11 min readmcpgovernancesecurity

    The Bill Came Due Early

    I predicted eighteen months of governance debt. It was called in one quarter. Six January claims, graded without mercy, against February's malware, April's RCE, and today's spec.

  3. 10 min readmcpgovernancesecurity

    There Was No Tenant

    The tenant check passed. There was no tenant — or it was someone else's. Why async tasks are where per-request governance dies, silently and by default.

  4. 8 min readmcpgovernancesecurity

    Off By Default

    MCP's biggest revision made the governance layer opt-in and off by default. Everything that keeps an agent honest is now yours to turn on.