PlayAgit / Notes for builders
Build. Play. Explore.
A technology blog covering game development, AI, automation, and industry news — notes from what we actually build and run.
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Unity’s Official Claude Code Plugin Puts an Agent Inside the Editor — Our 594 Runs Only Watched the Terminal
Unity announced an official plugin for Claude Code and described it as installing engine-authored skills, shipping Unity’s command-line tool, and opening live Editor control through Unity’s own MCP server — all through a single install command (Unity’s plugin announcement).
Latest from the workbench
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Every Agent Run Leaves a Trace — Except the One Built to Leave Nothing
The simplest thing an agent leaves behind is wreckage: a diff, a log, some files that were not there before.
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The Signed Receipt for a Write That Never Happened: How Agent Execution Records Became Evidence
The premise behind this whole category is that an AI execution can be watched but not re-run.
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When an Agent Reports Success and Nothing Happened: Separate Verifiers, Isolated Workers, and Playbooks Built from Traces
The failure mode that keeps surfacing in agent discussions is not a crash.
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The Vision Log, Part 4: Where This Stands, Against the Standard It Was Given
A charter ratified on 2026-07-15 names eight measures for a digital counterpart and forbids three. Twenty of the twenty-six things this series measured are on the forbidden list, and only one of the eight has an instrument at all.
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The Vision Log, Part 1: Two Systems Before This One, and Why Both Were Abandoned
Three attempts in four months. What the two systems before Vision were, what remains of them on disk, and why the one that worked was shut down anyway.
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Kojima’s Physint Moves From PlayStation to Xbox: the September 9 Announcement and the Signing That Cuts Against Xbox’s Own Recent Record
The turn in this story is a publishing announcement.
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The Vision Log, Part 2: What Breaks When an Agent Edits Its Own Repository
The hard part of letting an agent change its own source is not writing the change: it is proof, isolation, reversal, and restarting the process you are standing on.
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The Vision Log, Part 3: Four Wrong Diagnoses Before the Real One
Four diagnoses measured and discarded before the real reason a research pipeline held most of its topics: how its queries were built.
