rtk is at 80,460 stars for a token-reduction proxy, with 1,620 open items split almost evenly.

rtk-ai/rtk claims 60-90% token reduction on common dev commands from a single dependency-free Rust binary and cut dev-0.50.0-rc.439 on September 14 (GitHub). The queue splits 781 PRs to 839 issues, which open_issues_count hides entirely. The newest issues are precise rewrite failures: gh pr view --json <field> exiting 1 with no rewrite, a pytest filter dropping the duration line so a 3-second run and a 10-minute run look identical. Read those before putting a rewriting proxy in front of your agent's shell.