# caveman v2.4.0

- Product: caveman (https://whatsnew.fyi/product/caveman)
- Vendor: Julius Brussee
- Date: 2026-08-29
- Version: v2.4.0
- Original notes: https://github.com/JuliusBrussee/caveman/releases/tag/v2.4.0
- Permalink: https://whatsnew.fyi/product/caveman/releases/v2.4.0

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **fixed** — Scope repo intelligence to project source and require direct evidence in proxy
- **fixed** — Handle stdout/stderr 'error' in UserPromptSubmit hook
- **fixed** — Honor HTTP_PROXY/HTTPS_PROXY for outbound requests in CLI
- **fixed** — Block sensitive directory names in compression
- **fixed** — Add Claude 5 model output pricing to stats
- **fixed** — Scope caveman mode to the session
- **removed** — Remove deprecated hooks alias from codex
- **fixed** — Avoid CLI bin collision in installer
- **fixed** — Serialize concurrent compress runs with a cross-session lock
- **fixed** — Support documented version flag in CLI

Caveman 2.4.0 closes the full weekly issue and PR queue with adversarial review, targeted fixes, and release-grade validation.

Highlights:
- Hardened proxy redirect, authentication, cancellation, and TLS behavior.
- Request-scoped MCP recovery and per-session native-runtime locking.
- Safer Windows hooks and lifecycle handling.
- Stronger compression masking, isolation, accounting, and semantic doctor checks.
- Integrated accepted contributor work with explicit attribution and closure messages.
- Restored documented `caveman --version` behavior.

Artifacts:
- CLI: `npm install -g @caveman-ai/cli@1.3.1`
- Signed binaries: [bin-v1.1.4](https://github.com/JuliusBrussee/caveman/releases/tag/bin-v1.1.4)

Validation:
- Full CLI suite: 665 tests, 647 passed, 18 skipped, 0 failed.
- Required Linux, macOS, Windows, Go, TypeScript, Python, extension, and root CI passed.
- Clean npm install, signed-binary checksum verification, direct wrap, compression, and byte-exact retrieval smoke passed.
##### What's Changed
* fix(proxy): scope repo intelligence to project source and require direct evidence by @JuliusBrussee in https://github.com/JuliusBrussee/caveman/pull/901
* fix: harden weekly integrations and prepare v2.4.0 by @JuliusBrussee in https://github.com/JuliusBrussee/caveman/pull/929
* fix(hooks): handle stdout/stderr 'error' in UserPromptSubmit hook by @AmirF194 in https://github.com/JuliusBrussee/caveman/pull/795
* fix(cli): honour HTTP_PROXY/HTTPS_PROXY for outbound requests by @dylanneve1 in https://github.com/JuliusBrussee/caveman/pull/889
* fix(compress): block sensitive directory names by @CooperSheroy in https://github.com/JuliusBrussee/caveman/pull/891
* chore(skills): shorten skill descriptions to fit the listing budget by @smoochy in https://github.com/JuliusBrussee/caveman/pull/898
* fix(stats): add Claude 5 model output pricing by @SomSamantray in https://github.com/JuliusBrussee/caveman/pull/900
* fix: scope caveman mode to the session by @pavel-collab in https://github.com/JuliusBrussee/caveman/pull/904
* fix(codex): remove deprecated hooks alias by @cuddy-five in https://github.com/JuliusBrussee/caveman/pull/927
* fix(installer): avoid CLI bin collision by @pttydou in https://github.com/JuliusBrussee/caveman/pull/928
* fix(compress): serialize concurrent compress runs with a cross-session lock by @hunleyd in https://github.com/JuliusBrussee/caveman/pull/798
* fix(cli): support documented version flag by @JuliusBrussee in https://github.com/JuliusBrussee/caveman/pull/930

##### New Contributors
* @dylanneve1 made their first contribution in https://github.com/JuliusBrussee/caveman/pull/889
* @CooperSheroy made their first contribution in https://github.com/JuliusBrussee/caveman/pull/891
* @smoochy made their first contribution in https://github.com/JuliusBrussee/caveman/pull/898
* @SomSamantray made their first contribution in https://github.com/JuliusBrussee/caveman/pull/900
* @pavel-collab made their first contribution in https://github.com/JuliusBrussee/caveman/pull/904
* @cuddy-five made their first contribution in https://github.com/JuliusBrussee/caveman/pull/927
* @pttydou made their first contribution in https://github.com/JuliusBrussee/caveman/pull/928
* @hunleyd made their first contribution in https://github.com/JuliusBrussee/caveman/pull/798

**Full Changelog**: https://github.com/JuliusBrussee/caveman/compare/v2.3.1...v2.4.0