Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/managedcode/mcpgateway/mcaf-dotnet-quickdupnpx skills add managedcode/MCPGateway --skill mcaf-dotnet-quickdupgit clone --depth 1 https://github.com/managedcode/MCPGatewayWhat 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 | $0.00056 | $0.01312 |
| Opus 5 | $0.00028 | $0.00656 |
| Sonnet 5 | $0.00011 | $0.00262 |
| Haiku 4.5 | $0.00006 | $0.00131 |
Grade C, and why
mcaf-dotnet-quickdup scanned grade C with 2 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 2d 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.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
- official macOS/Linux fallback: `curl -sSL https://raw.githubusercontent.com/asynkron/Asynkron.QuickDup/main/install.sh | bash` Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
- official macOS/Linux fallback: `curl -sSL https://raw.githubusercontent.com/asynkron/Asynkron.QuickDup/main/install.sh | bash` This is a copy
100% identical to mcaf-dotnet-quickdup — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 132 lines — stays where its author put it; the contents beside it link to each section on GitHub.
MCAF: .NET QuickDup
Trigger On
- the repo wants
QuickDup - the team needs repeatable duplicate-code scans for C#
- the user asks about DRY cleanup, copy-paste detection, clone detection, or duplicate logic removal in a .NET repo
Value
- produce a concrete project delta: code, docs, config, tests, CI, or review artifact
- reduce ambiguity through explicit planning, verification, and final validation skills
- leave reusable project context so future tasks are faster and safer
Do Not Use For
- formatting-only work
- repos that intentionally use a different clone detector and do not want overlap
- generated-code churn where duplication findings would mostly be noise
Inputs
- the nearest
AGENTS.md - target solution, project, or source subtree
- current duplication hotspots and generated-code boundaries
Quick Start
- Read the nearest
AGENTS.mdand confirm scope and constraints. - Run this skill's
Workflowthrough theRalph Loopuntil outcomes are acceptable. - Return the
Required Result Formatwith concrete artifacts and verification evidence.
Workflow
- Choose the scan target deliberately:
- whole solution for broad discovery
- bounded folders for targeted cleanup
- Scan C# with
.csonly unless the repo explicitly wants Razor, generated XML, or other extensions too. - Exclude generated and transient paths before trusting the results:
bin/obj/Migrations/when scaffold churn dominates*.g.cs*.generated.cs*.Designer.cs
- Review the top patterns before refactoring anything.
- Classify duplication before changing code:
- real structural duplication worth extraction
- domain-shape duplication that documents intent
- generated or acceptable duplication that should be ignored
- Prefer small extractions, named helpers, shared value objects, or focused abstractions over flag-heavy merge methods.
- Re-run
QuickDupafter the refactor and then run the repo's normal quality pass.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 2d ago First seen · 132 lines · 56 tokens per session scan C c5b43b132ac4
mcaf-dotnet-quickdup is a skill published in the GitHub repository managedcode/MCPGateway (5 stars, last pushed 3d ago), licensed MIT. It adds 56 tokens to every session and 1,312 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). It is 100% identical to mcaf-dotnet-quickdup, differing in 0 lines, and is treated as a copy.
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