RepoMind

Local-first code intelligence for Python repositories: deep static analysis, repository health and risk hotspots — with an optional LLM layer on top.

RepoMind answers one question: where should a team spend its refactoring budget?

It parses a Python repository, builds a module dependency graph, computes complexity metrics, finds dead code, and correlates everything with Git churn to rank the highest-risk parts of the codebase. The result is a health score, a ranked list of explainable findings, and shareable Markdown/JSON reports.

• Deterministic first — the entire analysis works offline, with no API keys and no LLM.
• Explainable — every finding carries the measured values and thresholds that produced it.
• Fast — pure AST analysis plus a linear-time dependency graph; no code is executed.
• Extensible — rules, parsers and reporters are separate layers with stable contracts.
• Local-first — your code never leaves your machine unless you explicitly opt into a cloud model.

Features

Reports: rich terminal output, Markdown for pull requests, a self-contained HTML report, SARIF for GitHub code scanning, and JSON for automation (--fail-under and --fail-on-new turn RepoMind into a CI quality gate).

Quick start

Requires Python 3.12+.

pipx install repomind-analyzer    # provides the `repomind` command

The PyPI distribution is called repomind-analyzer because the plain repomind name is taken by an unrelated project.

From source (for contributors):

# with uv (recommended)
uv venv
uv pip install -e ".[dev]"

# or with pip
python -m venv .venv
.venv\Scripts\activate        # Windows
# source .venv/bin/activate   # Linux/macOS
pip install -e ".[dev]"

Analyze a repository:

repomind analyze /path/to/repository

╭──────────────────────────────── RepoMind ─────────────────────────────────╮
│ Repository   /home/dev/RepoMind                                           │
│ Python code  88 files | 8,027 source lines                                │
│ Duration     3.93 s                                                       │
│ Git history  analyzed                                                     │
╰───────────────────────────────────────────────────────────────────────────╯

██████████  100/100 | grade A

No findings above the configured thresholds.
7 finding(s) suppressed by configuration (details in --format json).

Dependency graph
 Metric            Value
 Internal modules     88
 Internal imports    265
 Import cycles         0
 External packages    26

Call graph: 572 functions, 648 call edges
 fan-in repomind.core.engine.analyze_repository (33 callers)
 fan-in repomind.config.load_config (22 callers)
 fan-in repomind.core.pyparser.parse_module (21 callers)
Most unstable modules: repomind.__main__ (1.00), repomind.agents (1.00), repomind.git (1.00)

Change hotspots (last 22 commits on master)
 File                              Commits   Churn   Authors   Last change   Heat
 src/repomind/core/engine.py             8     584         1   2026-09-22     100
 src/repomind/core/pyparser.py           7     478         1   2026-09-22      78
 src/repomind/cli/app.py                 4     504         1   2026-09-22      63

Tip: use --format markdown --output report.md for a shareable report or --format json for machine-readable output.

Output above is trimmed and uncolored; borders and the score bar adapt to your terminal's encoding. The two suppressed entries are deliberate and explained in Dogfooding. A full HTML report generated from the deliberately flawed sample project is checked in at docs/example-report.html.

Generate shareable reports:

repomind analyze . --format markdown --output report.md
repomind analyze . --format json --output report.json
repomind analyze . --min-severity high --top 10
repomind analyze . --exclude migrations --exclude "*_pb2.py"
repomind analyze . --since main         # review only files changed since main
repomind analyze . --fail-under 70     # exit code 1 when the score drops
repomind analyze . --format sarif --output repomind.sarif
repomind analyze . --format html --output report.html
repomind trend .                        # health score across sampled commits
repomind search "retry backoff"          # lexical search over code chunks
repomind index .                         # build the local semantic index
repomind search "where is retry handled" --mode semantic
repomind rules                          # list every built-in rule

Adopting RepoMind in a legacy repository: accept today's findings once, then let CI fail only on new problems.

repomind baseline .                    # writes .repomind-baseline.json
repomind analyze . --fail-on-new       # exit code 1 only for new findings

The baseline file is plain JSON with one reviewable entry per accepted finding (rule, path, symbol, severity). Fingerprints ignore line numbers and measured values, so a known issue stays known when it moves or grows.

Useful flags:

Configuration

Drop a repomind.toml at the repository root, or use [tool.repomind] in pyproject.toml:

[tool.repomind]
exclude = ["migrations", "*/generated/*"]
ignore = [
    "maintainability/too-many-parameters@src/app/cli.py",
    "dead-code/unused-import",
]
use_git_history = true
history_commits = 500
blame_files = 10          # hottest files tracked with git log -L (0 disables)

[tool.repomind.thresholds]
cyclomatic_warn = 10
cyclomatic_high = 15
cyclomatic_critical = 20
function_length_warn = 60
god_object_methods = 15
hotspot_min_commits = 5

Unknown keys are rejected loudly, so typos never silently change your analysis.

ignore entries silence known, accepted findings: rule-id suppresses a rule everywhere, rule-id@glob only for matching paths. Suppressed findings never disappear silently — every report shows how many were suppressed and --format json lists them in full.

GitHub Action

RepoMind ships a composite action that analyzes the repository, writes a SARIF report and uploads it to GitHub code scanning, so findings appear as alerts on the pull request diff:

name: repomind

on: [push, pull_request]

permissions:
  contents: read
  security-events: write

jobs:
  analyze:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: PeterCode-cmd/RepoMind@master
        with:
          fail-on-new: "true"   # optional: fail only on new findings
          fail-under: "85"      # optional: fail below this health score

Inputs: path, fail-under, fail-on-new, baseline, sarif-file, upload-sarif. The action runs with --no-history so results stay deterministic on shallow checkouts.

How the health score works

1. Every finding adds penalty points: critical 8, high 4, medium 1.5, low 0.5, info 0.1.
2. The penalty is normalised per 100 source lines: density = penalty / (loc / 100).
3. score = 100 - density × 10 (clamped to 0–100), grade A < 1.0, B < 2.0, C < 4.0, D < 7.0, else F.

Size normalisation keeps large legacy repositories from being punished for their sheer size; the score measures density of problems, not their absolute count.

Architecture

repomind/
├── src/repomind/
│   ├── cli/           # Typer + Rich command line interface
│   ├── core/          # discovery, AST parser, complexity, graph, rules, engine
│   │   └── rules/     # one module per rule family, registered in default_rules()
│   ├── git/           # history analysis: churn, authors, hotspots
│   ├── models/        # shared dataclasses: findings, metrics, enums
│   ├── reporters/     # terminal, Markdown and JSON renderers
│   ├── semantic/      # (roadmap) embeddings + local vector search
│   ├── agents/        # (roadmap) LLM agents fed with prepared metrics
│   └── dashboard/     # (roadmap) Streamlit dashboard
├── tests/
│   └── fixtures/sample_project/   # deliberately flawed package used by tests
├── docs/
├── pyproject.toml
└── README.md

Pipeline: discover → parse → graph → history → rules → score → report. Rules never read files: they consume prepared metrics, graphs and history, which keeps them fast, deterministic and easy to test. See docs/architecture.md for details and extension guides.

Dogfooding

RepoMind analyzes itself in CI:

repomind analyze . --no-history --fail-under 95

The repository ships a repomind.toml with two deliberate decisions:

• exclude = ["tests/fixtures"] — the sample project is intentionally broken (that is its job), so it must not count towards RepoMind's own health.
• two ignore globs covering the Typer declaration surfaces in src/repomind/cli/*.py — a command is one parameter per flag with rich help text and no logic, so parameter count and function length describe the CLI framework, not the code.

Everything else is clean: 100/100 (grade A), zero findings, zero import cycles. The score only became meaningful after the exclusions above; before them, RepoMind was grading its own test fixtures.

Benchmarks

First-run results on popular open-source projects (default thresholds, no configuration, 500-commit window):

The full write-up — methodology, notable findings, and why excluding tests can lower the score — is in docs/benchmarks.md.

Trend

repomind trend samples commits, analyzes each one in a detached Git worktree (same rules, thresholds and configuration every time) and reports how the health score moved. RepoMind on itself:

Health trend (last 50 commits)
 Date       Commit  Subject                                  Score  Grade  Findings
 2026-09-22 5f1eb37 Add semantic layer and comprehensive ...     87  B            22
 2026-09-22 c81f016 Reduce complexity in the analysis core       97  A             5
 2026-09-22 8db9318 Add baseline support and --fail-on-new      100  A             1
 2026-09-22 eab2bf1 Track function-level churn with git log -L  100  A             0
 2026-09-22 32aa381 Add LCOM4 cohesion and instability          100  A             0

Score 87 (5f1eb37) -> 100 (32aa381) (+13)  best 100 (8db9318), worst 87 (5f1eb37)

History and blame stages are skipped per sample (they would be expensive and biased by each snapshot's own commit window); use --samples and --commits to trade detail for runtime.

Roadmap

• MVP: CLI, static analysis, dependency graph, terminal + Markdown reports
• Git history analysis with complexity × churn hotspots
• JSON output and --fail-under CI gate
• Configurable suppression (ignore) and decorator-aware dead-code detection
• Baseline + --fail-on-new for incremental adoption in legacy repositories
• Diff mode (--since) for pull-request reviews
• SARIF output and a GitHub Action
• Self-contained HTML report
• Benchmarks against popular open-source projects (docs/benchmarks.md)
• Published on PyPI as repomind-analyzer (v0.1.0)
• Security, documentation, call-graph, cohesion and trend analyses
• Semantic layer: local embeddings + natural-language questions about the code
• Agent layer: Architect / Quality / Security / Maintainability / Documentation
• Streamlit dashboard
• GitHub URL input (clone + analyze) and PR comment bot
• Additional languages (tree-sitter based)

Development

uv pip install -e ".[dev]"

ruff format .          # formatting
ruff check .           # linting
mypy                   # strict type checking
pytest --cov           # tests + coverage
pre-commit install     # optional: run checks on every commit

The test suite includes a deliberately flawed sample project (tests/fixtures/sample_project) that exercises every built-in rule, plus temporary Git repositories for history analysis.

Contributing

Contributions are welcome — see CONTRIBUTING.md. Good first issues: new rules, new reporters, language support, and the roadmap items above.

License

MIT — see LICENSE.