Warning MCMR is early
0.0.xsoftware. Its rules and command line may still change.
Installation
MCMR requires Git and Python 3.14 or newer. Its main target is free-threaded Python 3.14t+.
pip install mcmr
mcmr check .
Use uv tool install mcmr for an isolated command line installation.
What it is
MCMR is a policy engine for whole repositories. A Rust kernel reads source once into typed fact tables. Python rules query the shared evidence and report exact findings with source locations.
- Deterministic rules are local, fast, and enabled by default.
- Contextual rules use a configured model only when you enable them.
- External rules can join repository facts with systems such as DataHub.
- Safe repairs are kept only after MCMR reparses the edit and reruns the rule.
- Plugins can add rules and evidence providers through public entry points.
MCMR reads Python, Rust, TypeScript, C, C++, and CUDA.
Usage
mcmr check . --format concise
mcmr check . --repair preview
mcmr check . --repair apply
mcmr check . --contextual --external
Write every verdict to DataHub, then read the history before the next agent changes the code.
mcmr check . --external --writeback
mcmr history .
Demo
The repository includes a deliberately messy MCP server. Run every enabled rule without changing the demo.
mcmr check demo/ --contextual --external --writeback --report-only
See the documentation, the rule reference, and the recorded DataHub examples. SYSTEM.md documents the architecture. The docs also cover contextual setup and rule controls.
MCMR is licensed under Apache 2.0.
1 maintainer
Metadata
1 maintainer
Release files for mcmr 0.0.3
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| mcmr-0.0.3.tar.gz | 1.1 MB | Details |
Built distributions (wheels)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| mcmr-0.0.3-cp314-cp314t-manylinux_2_28_x86_64.whl | CPython 3.14 | CPython 3.14 free-threading | Linux glibc 2.28+ x86-64 | Details |
| mcmr-0.0.3-cp314-cp314-manylinux_2_28_x86_64.whl | CPython 3.14 | CPython 3.14 | Linux glibc 2.28+ x86-64 | Details |
Total release size: 25.2 MB
Release files / mcmr-0.0.3.tar.gz
| Download URL | mcmr-0.0.3.tar.gz |
|---|---|
| Size | 1.1 MB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
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|
|
BLAKE2b-256 checksum How to use checksums |
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|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
uv/0.12.3 {"installer":{"name":"uv","version":"0.12.3","subcommand":["publish"]},"python":null,"implementation":{"name":null,"version":null},"distro":{"name":"Ubuntu","version":"24.04","id":"noble","libc":null},"system":{"name":null,"release":null},"cpu":null,"openssl_version":null,"setuptools_version":null,"rustc_version":null,"ci":true}
|
Release files / mcmr-0.0.3-cp314-cp314t-manylinux_2_28_x86_64.whl
| Download URL | mcmr-0.0.3-cp314-cp314t-manylinux_2_28_x86_64.whl |
|---|---|
| Size | 12.1 MB |
| Tags | CPython 3.14 CPython 3.14 free-threading Linux glibc 2.28+ x86-64 |
|
SHA-256 checksum How to use checksums |
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|
|
BLAKE2b-256 checksum How to use checksums |
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|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
uv/0.12.3 {"installer":{"name":"uv","version":"0.12.3","subcommand":["publish"]},"python":null,"implementation":{"name":null,"version":null},"distro":{"name":"Ubuntu","version":"24.04","id":"noble","libc":null},"system":{"name":null,"release":null},"cpu":null,"openssl_version":null,"setuptools_version":null,"rustc_version":null,"ci":true}
|
Release files / mcmr-0.0.3-cp314-cp314-manylinux_2_28_x86_64.whl
| Download URL | mcmr-0.0.3-cp314-cp314-manylinux_2_28_x86_64.whl |
|---|---|
| Size | 12.1 MB |
| Tags | CPython 3.14 Linux glibc 2.28+ x86-64 |
|
SHA-256 checksum How to use checksums |
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|
|
BLAKE2b-256 checksum How to use checksums |
a4f7a8c0d4fba9a95ed3614ec8b168449735aac7dcd729d2aca956cd138df484
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
uv/0.12.3 {"installer":{"name":"uv","version":"0.12.3","subcommand":["publish"]},"python":null,"implementation":{"name":null,"version":null},"distro":{"name":"Ubuntu","version":"24.04","id":"noble","libc":null},"system":{"name":null,"release":null},"cpu":null,"openssl_version":null,"setuptools_version":null,"rustc_version":null,"ci":true}
|
