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Sweep 08 Oct 2026 · 18:53Z Build v2.1.295 516 read Stable v2.1.286 Latest v2.1.295 Next v2.1.295 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.292 ·

JSON repair now counts keys named __proto__

When Claude Code repairs JSON with doubly escaped characters, its usage report now counts how many keys are named __proto__

Under the hood Internal Changes
JSON All of v2.1.292
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
TelemetryArea: what it touches
Internal ChangesKind: in v2.1.292,
Internal ChangesSection of the release
What

Claude Code can repair JSON text in which special characters were escaped twice by mistake. The usage data it records about that repair now includes a count of keys named __proto__, a name with a special meaning in JavaScript objects.

Why

It shows Claude Code now watches for this kind of key in the JSON it repairs.

See this entry in the whole of v2.1.292 →

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