CATCH #2401
DETECTED OCT 31, 2026 01:13 UTC
THE CATCHscore 6/10
EXHIBIT 2401 · URGENT
Oct 31, 2026 01:13 UTC
github_releases+pages
https://raw.githubusercontent.com/anthropics/claude-code/main/CHANGELOG.md
Claude Code v2.1.316 was released, deprecating fast mode for Opus 4.8 and adding several new features and fixes related to app gateway, subagents, and environment variables.
✓ VERIFIED — BEAT THE ANNOUNCEMENT BY 23.5H · AUTO-VERIFIED AGAINST ANTHROPIC NEWS
READY TO POST:
anthropic just dropped claude code v2.1.316. rip fast mode for opus 4.8, you've got a month to migrate to opus 5.5 for that speedup!
new claude code release v2.1.316 adds a bunch of dev-focused features like pooled group budgets for the claude apps gateway and granular subagent effort controls. useful for enterprise setups.
EVIDENCE — the receipts
[MERGED across 2 sources: github_releases, pages]
shared signal: claude-code
--- github_releases :: anthropics/claude-code ---
anthropics/claude-code release: v2.1.316
name: v2.1.316
published: 2026-10-31T01:01:35Z
url: https://github.com/anthropics/claude-code/releases/tag/v2.1.316
## What's changed
- Added `CLAUDE_CODE_DISABLE_ULTRATHINK`, which turns the `ultrathink` keyword off
- Added pooled group budgets to the Claude apps gateway: one monthly budget that a group's members share, on top of each member's own limit, set with `pooled_budget` on the spend limits admin API
- Added `CLAUDE_CODE_DISABLE_LOOPED_CROSS_CERT_DROP` to keep system cross-certificates that certify each other in a loop, for servers whose private CA needs one
- Added `CLAUDE_CODE_SUBAGENT_EFFORT` to set the effort level subagents run at when nothing else names one, instead of inheriting the session's
- Added `managed.policy_mode: layered` to the Claude apps gateway: every policy that matches a developer applies, each merged over the ones listed below it, not only the first
- Added `guardrail.input_tagging` on Claude apps gateway Bedrock upstreams, which wraps prompts in the input tags that an Amazon Bedrock guardrail's prompt attacks filter needs; `all_messages_and_system` also tags the system prompt
- Deprecated fast mode for Opus 4.8 as of October 30, 2026; it will be removed on November 30, 2026. After removal, fast mode requests on Opus 4.8 return an error and do not fall back to standard Opus 4.8. Migrate to Opus 5.5 to keep the speedup
- Fixed shell commands being left running on macOS and Linux when Claude Code exits by itself, for example when credentials are refused or a cloud session is archived
- Fixed bash aliases with line breaks in their value (except in Git Bash), and functions whose names start with a dash, being garbled or lost in the Bash tool's shell
- Fixed bash scripts started from the Bash tool stopping after their first command when `SHELLOPTS` is exported
- Fixed Pow
caught by the 20-minute sweep ·
the live wire · all receipts