Borrowing it
Nothing to install: this file belongs to umage-ai/CodeShellManager. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/umage-ai/CodeShellManager/main/CLAUDE.mdgit clone --depth 1 https://github.com/umage-ai/CodeShellManagerWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/umage-ai/codeshellmanager/claude-md)<a href="https://agentmods.dev/instructions/umage-ai/codeshellmanager/claude-md"><img src="https://agentmods.dev/badge/instructions/umage-ai/codeshellmanager/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/umage-ai/codeshellmanager/claude-md"><img src="https://agentmods.dev/badge/instructions/umage-ai/codeshellmanager/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.22510 | $0.22510 |
| Opus 5.5 | $0.09004 | $0.09004 |
| Sonnet 5.5 | $0.04502 | $0.04502 |
| Haiku 4.5 | $0.02251 | $0.02251 |
Grade A, and why
CodeShellManager CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 27d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 904 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CodeShellManager
A WPF .NET 10 multi-terminal host for Claude Code (and other CLI tools). Runs multiple pseudo-terminal sessions in a tabbed/grid layout with full-text search, alert detection, git status, and session persistence.
Build & Run
# From repo root
dotnet build src/CodeShellManager/CodeShellManager.csproj
dotnet run --project src/CodeShellManager/CodeShellManager.csproj
# Or open CodeShellManager.slnx in Visual Studio / Rider
Requirements: .NET 10 SDK, Windows 10/11 (uses ConPTY + WebView2)
Visual Studio: Hot Reload disabled
Properties/launchSettings.json ships with "hotReloadEnabled": false, and the csproj sets <MetadataUpdaterSupport>false</MetadataUpdaterSupport> in Debug. Both are workarounds for a System.ExecutionEngineException that crashes the app on F5 under .NET 10.0.8 + VS 18 — Microsoft.Extensions.DotNetDeltaApplier.dll faults during its own startup before any managed code runs. Ctrl+F5 (Start Without Debugging) is unaffected either way. Remove both when the runtime bug is fixed upstream.
Command-line flags
| Flag | Effect |
|---|---|
--clean |
Debug isolation mode — see below. |
--clean (parsed in App.OnStartup, exposed as App.CleanStart):
MainWindow.OnLoadedskips the restore loop and clears the in-memorySessionManager— both sessions AND groups — so any new work in the run starts from a blank slate.MainViewModel.SaveStateAsyncshort-circuits — nothing is written tostate.jsonfor the entire run. Window bounds, layout changes, settings tweaks, and any sessions created during the clean run are all discarded on exit.- The user's prior
state.jsonsurvives the run untouched, so this is the safe way to test from a blank slate.
Architecture
Key layers
PTY (ConPTY) → PseudoTerminal → TerminalBridge → WebView2 (xterm.js)
↓
OutputIndexer → SQLite FTS5
AlertDetector → SessionViewModel.RaiseAlert()
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 27d ago Changed · +23 lines · +826 tokens per session c7300a9f4059
- 28d ago Changed · +125 lines · +3,471 tokens per session e224053939cf
- 1mo ago Changed · +183 lines · +3,170 tokens per session c9a7b54d026f
- 1mo ago Changed · +106 lines · +4,658 tokens per session 56877f495cee
- 1mo ago Changed · +25 lines · +1,093 tokens per session 310db22f41f1
- 1mo ago First seen · 442 lines · 9,292 tokens per session scan A 1f616f936bc3
CodeShellManager CLAUDE.md is an instructions file published in the GitHub repository umage-ai/CodeShellManager (24 stars, last pushed 3d ago), licensed MIT. It adds 22,510 tokens to every session, about $0.0900 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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