FreeLLMleanrea tool cuts reverse‑engineering task time by 38% and cost by 35% versus REA
The 8 KB leanrea skill drops the MCP layer of REA, delivering faster, cheaper reverse‑engineering on macOS arm64.
The GitHub project aicodeking/leanrea offers an 8 KB skill that replaces the REA (Reverse Engineer Anything) framework.
Benchmarks on macOS arm64 using Claude Code (Sonnet 5.5) show leanrea completing four reverse‑engineering tasks in 388 seconds at a cost of $2.17, compared with REA's 627 seconds and $3.36.
The leanrea approach removes the MCP server and 207 predefined tool definitions, letting the agent run native commands directly.
Against a baseline with no skill, leanrea is about 19 % faster and uses 32 % fewer turns, while its advantage over REA is larger at 38 % faster and 35 % cheaper.
Installation is via the skills CLI (e.g., npx skills add aicodeking/leanrea) or manual copy into the agent’s skill directory.
Ce que cela signifie pour vous
For users, leanrea reduces both runtime and expense for reverse‑engineering workflows, especially on macOS arm64 machines. Developers of free or local AI agents can adopt the skill without adding a heavy MCP layer, keeping deployments lightweight and cost‑effective.
Sources
- aicodeking/leanrea: One 8 KB skill that replaces REA (Reverse Engineer Anything): plain CLI tools, no MCP. Benchmarked: 38% faster, 35% cheaper., GitHub trending, 17 Oct 2026
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