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Sweep 03 Nov 2026 · 22:27Z Build v2.1.318 536 read Stable v2.1.311 Latest v2.1.318 Next v2.1.318 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.318 ·

Cache-warming requests on resume follow the same cache rules as SDK requests

Requests that warm the prompt cache when a session resumes now get their cache length under the same rules as SDK requests

Under the hood Internal Changes
JSON All of v2.1.318
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
Prompt CachingArea: what it touches
Internal ChangesKind: in v2.1.318,
Internal ChangesSection of the release
What

When you resume a session, Claude Code can send a request to warm the prompt cache, which is the servers keeping the earlier part of a conversation so it does not have to be processed again. These requests are now treated as SDK requests when Claude Code decides how long the cache should last. The SDK is the toolkit for running Claude Code from your own programs.

So the override, the allowed list, and the choice between 1 hour and 5 minutes now apply to resume warming the same way they apply to SDK requests. Before, these requests went through the allowed-list check under their own name.

Why

This changes how long the cache lasts after a resume, which affects cost and how quickly replies come back.

Read from
Feature flag
tengu_prompt_cache_1h_config Not enough to say

Nothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.

This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.318: not a boolean we can read

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

tengu_tidy_frost Not enough to say

Nothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.

This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.318: off

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.318. It isn't a statement about your account. What a flag value here can and cannot tell you

See this entry in the whole of v2.1.318 →

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