Unwritten
Catches files and C# members you forgot to change, learned from your repo's git history
Open source Open in the app JSON README (API)
About
Catches files and C# members you forgot to change, learned from your repo's git history
Details
- Kind
- MCP servers
- Topic
- Version control
- Publisher
- byggarepop
- Origin
- official
- Category
- ferramentas
- Transport
- local
- Version
- 0.4.6
- Stars
- 1
- Last push
- 2026-08-07T17:20:10Z
- Repository state
- ativo
- Language
- C#
- License
- MIT
- Added
- 2026-08-29 03:01:44
- Updated
- 2026-08-29 03:01:44
- Origin id
io.github.Byggarepop/unwritten
README
<!-- mcp-name: io.github.Byggarepop/unwritten -->
# Unwritten
[](https://www.nuget.org/packages/Unwritten) [](https://www.nuget.org/packages/Unwritten) [](https://github.com/Byggarepop/Unwritten/blob/main/LICENSE)
**Catch the files you — or your AI agent — forgot to change.** Unwritten learns
from your git history which files usually change together and warns when one is
missing from your edit: "you changed `OrderService.cs` but not
`OrderServiceTests.cs`, and they change together 94% of the time." It calls
these missing companions *holes*, and every warning comes with its confidence
score and real example commits as proof.
```text
1 possible hole(s):
src/Orders/OrderServiceTests.cs
expected because you changed src/Orders/OrderService.cs
confidence 0.826 (90 co-changes in 100 changes)
e.g. 3f2a1c9 Add surcharge handling to freight calculation
FAIL: at least one hole at confidence >= 0.70.
```
It runs as an **MCP server** so AI coding agents (Claude Code, Copilot) can check
their own edits mid-session, and as a **CLI** for pre-commit hooks.
One `dotnet tool execute`, an index in `.unwritten/`, no server, no subscription,
no tokens.
**Works on any language.** File-level rules only need git history, so hole
detection works the same on Python, TypeScript, Go, or mixed repos. C# repos
additionally get method-level rules and cosmetic-edit filtering; JSON files get
key-level noise filtering. Running the tool requires the
[.NET SDK](https://dotnet.microsoft.com/download) (10+), but the repos it
analyzes can be anything.
## Quick start
From your repo's root:
1. Warm up the index (optional — every command builds it on first use and keeps it current by itself; this just makes the first query fast).
```bash
dotnet tool execute Unwritten --yes -- reindex
```
2. Register as an MCP server (Claude Code):
```bash
claude mcp add unwritten -- dotnet tool execute Unwritten --yes -- mcp
```
3. (Recommended if using Claude Code) Make the check deterministic — a git pre-commit hook and a Claude Code Stop hook that feeds failing holes back to the agent before a commit is made:
```bash
dotnet tool execute Unwritten --yes -- install-hook --git --claude-code
```
That's it — your agent can now call `check_holes` after editing, and the hooks
catch the cases where it forgets to.
## Explanatory video
https://github.com/user-attachments/assets/4ae7a22d-c611-458f-8c48-08f87eca1d29
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video). To set or refresh it: edit README.md on github.com, drag
videos/Unwritten__Long_16x9_subbed.mp4 (burned-in captions — GitHub's
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## See it in action
`stats` shows what the tool has learned — here, one file pair coupled strongly
enough (confidence ≥ 0.7) to block a commit if one side is missing:
After editing one file of that pair, `check` warns that its companion is
missing and spells out the three ways to resolve it — update the companion,
commit anyway, or mute the rule:
With the pre-commit hook installed, the same check runs automatically on every
commit and blocks it while the companion is still missing:
## Documentation
Everything else lives in **[docs/README.md](https://github.com/Byggarepop/Unwritten/blob/main/docs/README.md)**:
- [Background & the research behind it](https://github.com/Byggarepop/Unwritten/blob/main/docs/README.md#this-is-not-a-new-idea--and-thats-the-point)
- [Why these thresholds (tested on real data)](https://github.com/Byggarepop/Unwritten/blob/main/docs/README.md#why-these-thresholds-tested-on-real-data)
- [Use: MCP server, CLI, hooks, muting false rules](https://github.com/Byggarepop/Unwritten/blob/main/docs/README.md#use)
- [Configuration reference](https://github.com/Byggarepop/Unwritten/blob/main/docs/README.md#configuration--unwrittenconfigjson)
- [How it works](https://github.com/Byggarepop/Unwritten/blob/main/docs/README.md#how-it-works)
- [What it does NOT do (yet)](https://github.com/Byggarepop/Unwritten/blob/main/docs/README.md#what-it-does-not-do-yet)
## License
[MIT](https://github.com/Byggarepop/Unwritten/blob/main/LICENSE)