Who contributed to Anthropic on August 29, 2026?

4 developers shipped this update, including mattmccarley-ant, rfurman, jleder3, and abibbs-ant.

What were the notable Anthropic updates?

docs(managed_agents): remove cost and latency ratios from CMA_plan_big_execute_small (#851), docs(managed_agents): remove cost and latency ratios from CMA_plan_big_execute_small, and zeta23: consistent formalization-authorship account; de-duplicate CI.

Aug 29, 2026

$ the-wire · showcase

Claude cookbook drops unverified cost claims, formal-math tightens authorship and CI

By RepoJournal · Filed 06:58 UTC on August 29, 2026 · About Anthropic

4 people shipped this

mattmccarley-ant @mattmccarley-ant 2 cited

rfurman @rfurman 2 cited

jleder3 @jleder3 1 cited

abibbs-ant @abibbs-ant 1 cited

Anthropic pulled cost and latency ratios from a managed-agents cookbook after they went unverified, while formal-math standardized authorship and CI for its Palomar submissions.

The claude-cookbooks repo removed the "roughly 2.5x cheaper and 3x faster" claims from CMA_plan_big_execute_small [1], leaving the measured token split (84-98% at the worker rate) intact. This is a prose-only change, with no code or output cells altered [2]. In formal-math, the zeta23 project now presents a consistent authorship account, stating that all Lean code in the repository, including Zeta23/LinAlg/, was written by Claude, resolving a discrepancy flagged by Palomar's automated review [3]. The project also lays out as a Palomar template [4], and per-project CI now builds and runs the Palomar comparator check only on changed projects [5]. Separately, the claude-plugins-official repo promoted scandit-sdk from community to official, adding 86 skills for barcode/ID/label capture across 11 platforms [6].

Action items

→ Review the updated CMA_plan_big_execute_small cookbook for accurate cost/latency framing anthropics/claude-cookbooks [monitor]
→ Verify zeta23 README and metadata now match the stated authorship account anthropics/formal-math [plan]
→ Test the new per-project CI workflow on a changed project to confirm it only verifies affected subfolders anthropics/formal-math [plan]

References

[1] docs(managed_agents): remove cost and latency ratios from CMA_plan_big_execute_small (#851) ↗ anthropics/claude-cookbooks
[2] docs(managed_agents): remove cost and latency ratios from CMA_plan_big_execute_small ↗ anthropics/claude-cookbooks
[3] zeta23: consistent formalization-authorship account; de-duplicate CI ↗ anthropics/formal-math
[4] Lay out zeta23 as a Palomar template project ↗ anthropics/formal-math
[5] Add per-project CI: build + Palomar comparator check (changed projects only) ↗ anthropics/formal-math
[6] Add scandit-sdk plugin (community → official promotion) (#5634) ↗ anthropics/claude-plugins-official