codebase-memory-mcp is a pure-C, single-binary MCP server that indexes a codebase into a persistent Tree-Sitter knowledge graph in milliseconds and replaces dozens of file-by-file read cycles with a handful of structured MCP queries. As of 2026-06-24 it sits at 13,355 GitHub stars with 5,604 tests passing, MIT-licensed, supports 11 coding agents, and is backed by an arXiv preprint (arXiv:2603.27277) that benchmarks 83% answer quality at 10× fewer tokens and 2.1× fewer tool calls versus file-by-file exploration across 31 real-world repositories. The article is a builder-focused tool piece, not a news event.
GitHub repo JuliusBrussee/caveman — a TypeScript Claude Code / Codex / Gemini / Cursor skill that asks the agent to talk like a caveman. 74,940 stars and 4,230 forks as of 2026-06-20, MIT, 15 releases (latest v1.9.0 on 2026-06-12). Project-published benchmark of 10 real Claude API prompts shows 65% average output-token reduction (range 22–87%); caveman-compress sub-skill cuts 46% of tokens from real memory files. The README's own Important box is the lead caveat: caveman only affects output tokens — thinking/reasoning tokens are untouched.
googleworkspace/cli (binary: gws) is a first-party Rust CLI for every Workspace API, built dynamically from the Google Discovery Service, with 95 skill directories, a Gemini CLI extension, and an opt-in Model Armor integration that sanitizes API responses for prompt injection. As of 2026-06-18 the repo has 27,134 stars, 1,426 forks, 31,992 weekly npm downloads, and 30 releases from v0.4.4 to v0.22.5 — all in March 2026, with no new release tag in 11 weeks.