Mdarena – Benchmark your Claude.md against your own PRs
Benchmark your CLAUDE.md against your own PRs. Contribute to HudsonGri/mdarena development by creating an account on GitHub.
Mdarena – Benchmark your Claude.md against your own PRs launched on April 5, 2026 with 22 votes, #989 of 21,248 launches that month and more than 90% of that year's launches.
In plain words
Mdarena is a benchmarking tool designed for developers who work with Claude.md files. It allows users to compare their Claude.md implementations against their own pull requests to identify performance differences and inconsistencies. The tool helps development teams maintain quality standards by providing side-by-side analysis of how different versions handle the same tasks.
written from the facts on this page · September 2026
From the sources
Most CLAUDE.md files are written blindly. Research shows they often reduce agent success rates and cost 20%+ more tokens. mdarena lets you measure whether yours helps or hurts, on tasks from your actual codebase. pip install mdarena # Mine 50 merged PRs into a test set mdarena mine owner/repo --limit 50 --detect-tests # Benchmark multiple CLAUDE.md files + baseline (no context) mdarena run -c claude_v1.md -c claude_v2.md -c agents.md # See who wins mdarena report How It Works mdarena mine -> Fetch merged PRs, filter, build task set Auto-detect test commands from CI/package files mdarena run -> For each task x condition: - Checkout repo at pre-PR commit - Baseline: all CLAUDE.md files…from github.com
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