dotnet-csharp-concurrency-specialist

dotnet-csharp-concurrency-specialist is an agent for Claude Code from wshaddix/dotnet-skills. It costs 63 tokens per session (1,774 once invoked), scanned A, original, no licence file.

A guide for finding concurrency bugs in .NET code, where multiple tasks or threads access or change data at the same time. It focuses on races, deadlocks, thread safety, locking, and parallel execution.

In plain words
What is it for?
Use it to debug race conditions, deadlocks, unsafe shared access, lock contention, async races, and parallel-execution problems.
Why use it?
These bugs can be intermittent and difficult to reproduce. The guide helps investigate situations where timing or shared access causes incorrect behavior or stalled work.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the dotnet-skills plugin — 167 skills, 12 commands, 16 agents shipped together

Good fit Use it to debug race conditions, deadlocks, unsafe shared access, lock contention, async races, and parallel-execution problems.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/wshaddix/dotnet-skills/dotnet-csharp-concurrency-specialist
Install

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.

Clone the repo
git clone --depth 1 https://github.com/wshaddix/dotnet-skills

Made for: Claude Code.

Or install dotnet-skills, the plugin that ships this one along with the rest of its 167 skills, 12 commands, 16 agents.

Wrote 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.

agentmods badge for dotnet-csharp-concurrency-specialist

README.md
[![agentmods](https://agentmods.dev/badge/agents/wshaddix/dotnet-skills/dotnet-csharp-concurrency-specialist/github.svg)](https://agentmods.dev/agents/wshaddix/dotnet-skills/dotnet-csharp-concurrency-specialist)
Your own site
<a href="https://agentmods.dev/agents/wshaddix/dotnet-skills/dotnet-csharp-concurrency-specialist"><img src="https://agentmods.dev/badge/agents/wshaddix/dotnet-skills/dotnet-csharp-concurrency-specialist/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.

agentmods 80×15 button for dotnet-csharp-concurrency-specialist

Your own site · 80×15
<a href="https://agentmods.dev/agents/wshaddix/dotnet-skills/dotnet-csharp-concurrency-specialist"><img src="https://agentmods.dev/badge/agents/wshaddix/dotnet-skills/dotnet-csharp-concurrency-specialist.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 63 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,774 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00063 $0.01774
Opus 5 $0.00032 $0.00887
Sonnet 5 $0.00013 $0.00355
Haiku 4.5 $0.00006 $0.00177

Measured 11d ago against content hash 1dc37fbe45ca, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

dotnet-csharp-concurrency-specialist 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 11d 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.

agents/dotnet-csharp-concurrency-specialist.md · 196 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

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.

  1. 11d ago First seen · 196 lines · 63 tokens per session scan A 1dc37fbe45ca

Subscribe to this mod's changes

dotnet-csharp-concurrency-specialist is an agent published in the GitHub repository wshaddix/dotnet-skills (79 stars, last pushed 6mo ago), with no licence file. It adds 63 tokens to every session and 1,774 once invoked, about $0.0003 per session on Opus 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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