{"slug":"aaronontheweb-csharp-concurrency-patterns","name":"csharp-concurrency-patterns","description":"Choosing the right concurrency abstraction in .NET - from async/await for I/O to Channels for producer/consumer to Akka.NET for stateful entity management. Avoid locks and manual synchronization unless absolutely necessary.","long_description":"---\nname: csharp-concurrency-patterns\ndescription: Choosing the right concurrency abstraction in .NET - from async/await for I/O to Channels for producer/consumer to Akka.NET for stateful entity management. Avoid locks and manual synchronization unless absolutely necessary.\ninvocable: false\n---\n\n# .NET Concurrency: Choosing the Right Tool\n\n## When to Use This Skill\n\nUse this skill when:\n- Deciding how to handle concurrent operations in .NET\n- Evaluating whether to use async/await, Channels, Akka.NET, or other abstractions\n- Tempted to use locks, semaphores, or other synchronization primitives\n- Need to process streams of data with backpressure, batching, or debouncing\n- Managing state across multiple concurrent entities\n\n## Reference Files\n\n- [advanced-concurrency.md](advanced-concurrency.md): Akka.NET Streams, Reactive Extensions, Akka.NET Actors (entity-per-actor, state machines, cluster sharding), and async local function patterns\n\n## The Philosophy\n\n**Start simple, escalate only when needed.**\n\nMost concurrency problems can be solved with `async/await`. Only reach for more sophisticated tools when you have a specific need that async/await can't address cleanly.\n\n**Try to avoid shared mutable state.** The best way to handle concurrency is to design it away. Immutable data, message passing, and isolated state (like actors) eliminate entire categories of bugs.\n\n**Locks should be the exception, not the rule.** When you can't avoid shared mutable state:\n1. **First choice:** Redesign to avoid it (immutability, message passing, actor isolation)\n2. **Second choice:** Use `System.Collections.Concurrent` (ConcurrentDictionary, etc.)\n3. **Third choice:** Use `Channel<T>` to serialize access through message passing\n4. **Last resort:** Use `lock` for simple, short-lived critical sections\n\n---\n\n## Decision Tree\n\n```\nWhat are you trying to do?\n│\n├─► Wait for I/O (HTTP, database, file)?\n│   └─► Use async/await\n│\n├─► Process a collection in parallel (CPU-bound)?\n│   └─► Use Parallel.ForEachAsync\n│\n├─► Producer/consumer pattern (work queue)?\n│   └─► Use System.Threading.Channels\n│\n├─► UI event handling (debounce, throttle, combine)?\n│   └─► Use Reactive Extensions (Rx)\n│\n├─► Server-side stream processing (backpressure, batching)?\n│   └─► Use Akka.NET Streams\n│\n├─► State machines with complex transitions?\n│   └─► Use Akka.NET Actors (Become pattern)\n│\n├─► Manage state for many independent entities?\n│   └─► Use Akka.NET Actors (entity-per-actor)\n│\n├─► Coordinate multiple async operations?\n│   └─► Use Task.WhenAll / Task.WhenAny\n│\n└─► None of the above fits?\n    └─► Ask yourself: \"Do I really need shared mutable state?\"\n        ├─► Yes → Consider redesigning to avoid it\n        └─► Truly unavoidable → Use Channels or Actors to serialize access\n```\n\n---\n\n## Level 1: async/await (Default Choice)\n\n**Use for:** I/O-bound operations, non-blocking waits, most everyday concurrency.\n\n```csharp\n// Simple async I/O\npublic async Task<Order> GetOrderAsync(string orderId, CancellationToken ct)\n{\n    var order = await _database.GetAsync(orderId, ct);\n    var customer = await _customerService.GetAsync(order.CustomerId, ct);\n    return order with { Customer = customer };\n}\n\n// Parallel async operations (when independent)\npublic async Task<Dashboard> LoadDashboardAsync(string userId, CancellationToken ct)\n{\n    var ordersTask = _orderService.GetRecentOrdersAsync(userId, ct);\n    var notificationsTask = _notificationService.GetUnreadAsync(userId, ct);\n    var statsTask = _statsService.GetUserStatsAsync(userId, ct);\n\n    await Task.WhenAll(ordersTask, notificationsTask, statsTask);\n\n    return new Dashboard(\n        Orders: await ordersTask,\n        Notifications: await notificationsTask,\n        Stats: await statsTask);\n}\n```\n\n**Key principles:** Always accept `CancellationToken`. Use `ConfigureAwait(false)` in library code. Don't block on async code.\n\n---\n\n## Level 2: Parallel.ForEachAsync (CPU-Bound Parallelism)\n\n**Use for:** Processing collections in parallel when work is CPU-bound or you need controlled concurrency.\n\n```csharp\npublic async Task ProcessOrdersAsync(\n    IEnumerable<Order> orders,\n    CancellationToken ct)\n{\n    await Parallel.ForEachAsync(\n        orders,\n        new ParallelOptions\n        {\n            MaxDegreeOfParallelism = Environment.ProcessorCount,\n            CancellationToken = ct\n        },\n        async (order, token) =>\n        {\n            await ProcessOrderAsync(order, token);\n        });\n}\n```\n\n**When NOT to use:** Pure I/O operations, when order matters, when you need backpressure.\n\n---\n\n## Level 3: System.Threading.Channels (Producer/Consumer)\n\n**Use for:** Work queues, producer/consumer patterns, decoupling producers from consumers.\n\n```csharp\npublic class OrderProcessor\n{\n    private readonly Channel<Order> _channel;\n\n    public OrderProcessor()\n    {\n        _channel = Channel.CreateBounded<Order>(new BoundedChannelOptions(100)\n        {\n            FullMode = BoundedChannelFullMode.Wait\n        });\n    }\n\n    // Producer\n    public async Task EnqueueOrderAsync(Order order, CancellationToken ct)\n    {\n        await _channel.Writer.WriteAsync(order, ct);\n    }\n\n    // Consumer (run as background task)\n    public async Task ProcessOrdersAsync(CancellationToken ct)\n    {\n        await foreach (var order in _channel.Reader.ReadAllAsync(ct))\n        {\n            await ProcessOrderAsync(order, ct);\n        }\n    }\n\n    public void Complete() => _channel.Writer.Complete();\n}\n```\n\n**Channels are good for:** Decoupling speed, buffering with backpressure, fan-out to workers, background queues.\n\n**Channels are NOT good for:** Complex stream operations (batching, windowing), stateful per-entity processing, sophisticated supervision.\n\n---\n\n## Level 4+: Akka.NET Streams, Reactive Extensions, Actors\n\nFor advanced scenarios requiring stream processing, UI event composition, or stateful entity management, see [advanced-concurrency.md](advanced-concurrency.md).\n\n**Akka.NET Streams** excel at server-side batching, throttling, and backpressure. **Reactive Extensions** are ideal for UI event composition. **Akka.NET Actors** handle entity-per-actor patterns, state machines with `Become()`, and distributed systems via Cluster Sharding.\n\n---\n\n## Anti-Patterns: What to Avoid\n\n### Locks for Business Logic\n\n```csharp\n// BAD: Using locks to protect shared state\nprivate readonly object _lock = new();\nprivate Dictionary<string, Order> _orders = new();\n\npublic void UpdateOrder(string id, Action<Order> update)\n{\n    lock (_lock) { if (_orders.TryGetValue(id, out var order)) update(order); }\n}\n\n// GOOD: Use an actor or Channel to serialize access\n```\n\n### Manual Thread Management\n\n```csharp\n// BAD: Creating threads manually\nvar thread = new Thread(() => ProcessOrders());\nthread.Start();\n\n// GOOD: Use Task.Run or better abstractions\n_ = Task.Run(() => ProcessOrdersAsync(cancellationToken));\n```\n\n### Blocking in Async Code\n\n```csharp\n// BAD: Blocking on async - deadlock risk!\nvar result = GetDataAsync().Result;\n\n// GOOD: Async all the way\nvar result = await GetDataAsync();\n```\n\n### Shared Mutable State Without Protection\n\n```csharp\n// BAD: Multiple tasks mutating shared state\nvar results = new List<Result>();\nawait Parallel.ForEachAsync(items, async (item, ct) =>\n{\n    var result = await ProcessAsync(item, ct);\n    results.Add(result); // Race condition!\n});\n\n// GOOD: Use ConcurrentBag\nvar results = new ConcurrentBag<Result>();\n```\n\n---\n\n## Quick Reference: Which Tool When?\n\n| Need | Tool | Example |\n|------|------|---------|\n| Wait for I/O | `async/await` | HTTP calls, database queries |\n| Parallel CPU work | `Parallel.ForEachAsync` | Image processing, calculations |\n| Work queue | `Channel<T>` | Background job processing |\n| UI events with debounce/throttle | Reactive Extensions | Search-as-you-type, auto-save |\n| Server-side batching/throttling | Akka.NET Streams | Event aggregation, rate limiting |\n| State machines | Akka.NET Actors | Payment flows, order lifecycles |\n| Entity state management | Akka.NET Actors | Order management, user sessions |\n| Fire multiple async ops | `Task.WhenAll` | Loading dashboard data |\n| Race multiple async ops | `Task.WhenAny` | Timeout with fallback |\n| Periodic work | `PeriodicTimer` | Health checks, polling |\n\n---\n\n## The Escalation Path\n\n```\nasync/await (start here)\n    │\n    ├─► Need parallelism? → Parallel.ForEachAsync\n    │\n    ├─► Need producer/consumer? → Channel<T>\n    │\n    ├─► Need UI event composition? → Reactive Extensions\n    │\n    ├─► Need server-side stream processing? → Akka.NET Streams\n    │\n    └─► Need state machines or entity management? → Akka.NET Actors\n```\n\n**Only escalate when you have a concrete need.** Don't reach for actors or streams \"just in case\".\n","tagline":"Choosing the right concurrency abstraction in .NET - from async/await for I/O to Channels for producer/consumer to Akka.NET for stateful entity management. 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After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"aaronontheweb-csharp-concurrency-patterns\",\"task\":\"Install csharp-concurrency-patterns\",\"agent\":\"claude-code\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."},{"id":"cursor","label":"Cursor","kind":"agent-prompt","value":"Turn \"csharp-concurrency-patterns\" from https://github.com/Aaronontheweb/dotnet-skills/tree/master/skills/csharp-concurrency-patterns into a reusable Cursor project rule or agent instruction. Preserve the core workflow, adapt paths to this repo, and keep the rule scoped to tasks where it is relevant. Skill purpose: Choosing the right concurrency abstraction in .NET - from async/await for I/O to Channels for producer/consumer to Akka.NET for stateful entity management. Avoid locks and manual synchronization unless absolutely necessary. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"aaronontheweb-csharp-concurrency-patterns\",\"task\":\"Install csharp-concurrency-patterns\",\"agent\":\"cursor\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."}],"handoff_url":"https://www.openagentskill.com/api/skills/aaronontheweb-csharp-concurrency-patterns/install","manifest_url":"https://www.openagentskill.com/api/registry/manifest/aaronontheweb-csharp-concurrency-patterns"},"trust":{"score":79,"label":"Strong shortlist","version":"trust-score-v4","install_policy":"human_review_before_install","evidence":{"stars":"1.1K GitHub stars","repoActivity":"1.1K stars, 101 forks","lastPushed":"30d since push","license":"MIT","repository":"https://github.com/Aaronontheweb/dotnet-skills/tree/master/skills/csharp-concurrency-patterns","install":"npx skills add Aaronontheweb/dotnet-skills --skill csharp-concurrency-patterns","installSafety":"standard package or runtime install path","permissionSurface":"secrets or environment access, filesystem or document access","documentation":"Strong README/SKILL.md context","agentOutcomes":"No agent outcome data yet"},"outcome_evidence":{"total":0,"successes":0,"failures":0,"not_relevant":0,"success_rate":null,"recent_success_rate":null,"recent_failure_rate":null,"install_attempts":0,"install_success_rate":null,"risk_blocked":0,"setup_required":0,"avg_output_quality":null,"production_outcomes":0,"last_outcome_at":null,"label":"No agent outcome data yet"},"auto_install":{"allowed":false,"sandbox_required":true,"reason":"Human review or sandbox validation is required before automatic installation."},"best_for":["automation","agent-skill"],"known_risks":["Quality score needs review","Permission surface needs review: secrets or environment access, filesystem or document access","Dependency/runtime risk: credential or environment access, network or browser surface","Permission surface: secrets or environment access, filesystem or document access"]},"agent_proven":{"version":"agent-proven-v1","score":0,"tier":"unproven","label":"Needs first agent run","summary":"No agent outcome reports yet. Use Resolve, run one narrow sandbox task, then report the result.","metrics":{"totalOutcomes":0,"successfulOutcomes":0,"failedOutcomes":0,"installAttempts":0,"installSuccessRate":null,"successRate":null,"recentSuccessRate":null,"recentFailureRate":null,"riskBlocked":0,"setupRequired":0,"notRelevant":0,"avgOutputQuality":null,"avgTimeToUsefulMs":null,"productionOutcomes":0,"humanReviewRequired":0,"uniqueAgents":0,"lastOutcomeAt":null},"signals":[],"penalties":["No real agent outcome evidence yet"]},"audit":{"score":83,"risk_level":"needs_review","risk_label":"Needs review","warnings":["Dependency or permission surface needs review","Permission surface may require sandboxing","Quality score needs review","Permission surface needs review: secrets or environment access, filesystem or document access","Dependency/runtime risk: credential or environment access, network or browser surface","Permission surface: secrets or environment access, filesystem or document access"]},"safety_gate":{"tier":"experimental","label":"Experimental","auto_install_policy":"review","auto_install_allowed":false,"human_review_required":true,"blocked":false,"recommended_action":"Test manually in an isolated workspace and compare against safer alternatives."},"quality":{"score":77,"label":"Strong"},"supply":{"track":"Coding and developer agents","scenario":"GitHub automation","maintenance":"30d since push","risk":"Needs review"},"alternative_skills":[],"do_not_use_when":["teams that need a vendor-supported SLA","high-compliance environments without internal security review","No OpenAgentSkill engagement data yet","High-risk permission hints: Secrets or environment access","Dependency or permission surface needs review","Permission surface may require sandboxing","Quality score needs review","Permission surface needs review: secrets or environment access, filesystem or document access"],"agent_contract":{"task_input":"Use csharp-concurrency-patterns in an agent workflow","recommended_action":"Test manually in an isolated workspace and compare against safer alternatives.","install_policy":"review","minimum_review_before_use":["Trust: 79/100 Strong shortlist","Audit: 83/100 Needs review","Safety: 51/100 Avoid automatic install","Review repository, license, install command, and permission surface before production use."],"expected_agent_output":{"selected_skill":"aaronontheweb-csharp-concurrency-patterns (csharp-concurrency-patterns)","install_command":"npx skills add Aaronontheweb/dotnet-skills --skill csharp-concurrency-patterns","risk_summary":"Needs review; Experimental; Review before production","verification_result":"Report the smallest successful task, files touched, warnings, and any missing setup."}},"outcome_feedback":{"endpoint":"https://www.openagentskill.com/api/agent/outcome","method":"POST","requires_resolve_event_id":true,"event_id_source":"Use install_receipt.outcome_feedback.event_id or feedback.event_id returned by /api/agent/resolve for the current task.","expected_outcomes":["success","failed","not_relevant","blocked_by_risk","setup_required"],"payload_template":{"event_id":"<install_receipt.outcome_feedback.event_id or feedback.event_id from /api/agent/resolve>","skill_slug":"aaronontheweb-csharp-concurrency-patterns","task":"Use csharp-concurrency-patterns in an agent workflow","agent":"codex","outcome":"success","install_used":true,"risk_blocked":false,"setup_required":false,"task_success":true,"output_quality":4,"error_type":null,"human_review_required":false,"workspace":"sandbox","time_to_useful_ms":120000,"notes":"Report the smallest successful task, setup friction, files touched, and risk notes."}},"endpoints":{"web":"https://www.openagentskill.com/skills/aaronontheweb-csharp-concurrency-patterns","api":"https://www.openagentskill.com/api/agent/skills/aaronontheweb-csharp-concurrency-patterns","audit":"https://www.openagentskill.com/skills/aaronontheweb-csharp-concurrency-patterns/audit","eval":"https://www.openagentskill.com/api/agent/evals?slug=aaronontheweb-csharp-concurrency-patterns&task=Use%20csharp-concurrency-patterns%20in%20an%20agent%20workflow&max_risk=medium","resolve":"https://www.openagentskill.com/api/agent/resolve?task=Use%20csharp-concurrency-patterns%20in%20an%20agent%20workflow&agent=codex&max_risk=medium","receipt":"https://www.openagentskill.com/api/agent/receipt?task=Use%20csharp-concurrency-patterns%20in%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text","install":"https://www.openagentskill.com/api/skills/aaronontheweb-csharp-concurrency-patterns/install","manifest":"https://www.openagentskill.com/api/registry/manifest/aaronontheweb-csharp-concurrency-patterns"}},"supply_profile":{"track":{"slug":"coding","label":"Coding and developer agents","shortLabel":"Coding","description":"Code review, repo analysis, testing, CI, GitHub, DevOps, and developer workflow skills."},"scenario":{"label":"GitHub automation","description":"I need my agent to triage GitHub issues, review pull requests, and summarize repository changes.","useCases":[{"slug":"workflow-automation","title":"Workflow automation"},{"slug":"local-desktop","title":"Local desktop"},{"slug":"browser-automation","title":"Browser automation"}]},"applicableAgents":["Claude Code","CLI","Codex","Cursor"],"install":{"ready":true,"command":"npx skills add Aaronontheweb/dotnet-skills --skill csharp-concurrency-patterns","primaryTarget":"CLI","targetCount":4},"githubQuality":{"stars":1135,"starsLabel":"1.1K","forks":101,"license":"MIT","qualityScore":77,"trustScore":79,"auditScore":83},"maintenance":{"status":"fresh","label":"30d since push","daysSincePush":30,"lastPushedAt":"2026-08-07T18:11:23+00:00"},"risk":{"level":"needs_review","label":"Needs review","requiresReview":true,"notes":["Dependency or permission surface needs review","Permission surface may require sandboxing","Quality score needs review","Permission surface needs review: secrets or environment access, filesystem or document access","Dependency/runtime risk: credential or environment access, network or browser surface"]},"coverageTags":["Coding","GitHub automation","automation","agent-skill"]},"audit":{"audit_score":83,"risk_level":"needs_review","risk_label":"Needs review","quality_score":77,"trust_score":79,"maintenance_score":100,"security_score":79,"install_score":92,"warnings":["Dependency or permission surface needs review","Permission surface may require sandboxing","Quality score needs review","Permission surface needs review: secrets or environment access, filesystem or document access","Dependency/runtime risk: credential or environment access, network or browser surface","Permission surface: secrets or environment access, filesystem or document access"]},"quality_signals":{"model":"v2","star_score":21.39,"usage_score":0,"review_score":5.1,"metadata_score":3,"freshness_score":15},"platforms":["Claude Code"],"use_cases":[{"slug":"workflow-automation","title":"Workflow automation","url":"https://www.openagentskill.com/use-cases/workflow-automation"},{"slug":"local-desktop","title":"Local desktop","url":"https://www.openagentskill.com/use-cases/local-desktop"},{"slug":"browser-automation","title":"Browser automation","url":"https://www.openagentskill.com/use-cases/browser-automation"},{"slug":"github-automation","title":"GitHub automation","url":"https://www.openagentskill.com/use-cases/github-automation"}],"stacks":[{"slug":"content-growth-agent","title":"Content growth agent","url":"https://www.openagentskill.com/collections/content-growth-agent"},{"slug":"frontend-product-ui","title":"Frontend and UI","url":"https://www.openagentskill.com/collections/frontend-product-ui"},{"slug":"browser-qa-agent","title":"Browser QA agent","url":"https://www.openagentskill.com/collections/browser-qa-agent"}],"install":"npx skills add Aaronontheweb/dotnet-skills --skill csharp-concurrency-patterns","install_targets":[{"id":"openagentskill-cli","label":"CLI","title":"OpenAgentSkill CLI","kind":"command","value":"npx --yes https://github.com/Leon-Drq/openagentskill/releases/download/cli-v0.3.0/openagentskill-0.3.0.tgz add aaronontheweb-csharp-concurrency-patterns","description":"Resolve policy, run the source installer safely, and report a verified install receipt.","copyLabel":"Copy command"},{"id":"codex","label":"Codex","title":"Codex install prompt","kind":"agent-prompt","value":"Install the \"csharp-concurrency-patterns\" agent skill from https://github.com/Aaronontheweb/dotnet-skills/tree/master/skills/csharp-concurrency-patterns. Read its SKILL.md or equivalent instructions first, install only the files needed for this workspace, and summarize any required setup before using it. Skill purpose: Choosing the right concurrency abstraction in .NET - from async/await for I/O to Channels for producer/consumer to Akka.NET for stateful entity management. Avoid locks and manual synchronization unless absolutely necessary. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"aaronontheweb-csharp-concurrency-patterns\",\"task\":\"Install csharp-concurrency-patterns\",\"agent\":\"codex\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.","description":"Give Codex a repo-aware install prompt when the skill is not available through a local CLI.","copyLabel":"Copy prompt"},{"id":"claude-code","label":"Claude Code","title":"Claude Code skill prompt","kind":"agent-prompt","value":"Add \"csharp-concurrency-patterns\" as a Claude Code skill from https://github.com/Aaronontheweb/dotnet-skills/tree/master/skills/csharp-concurrency-patterns. Inspect the skill instructions, place the reusable skill files in the appropriate local skills location for this project, and report the activation steps. Skill purpose: Choosing the right concurrency abstraction in .NET - from async/await for I/O to Channels for producer/consumer to Akka.NET for stateful entity management. Avoid locks and manual synchronization unless absolutely necessary. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"aaronontheweb-csharp-concurrency-patterns\",\"task\":\"Install csharp-concurrency-patterns\",\"agent\":\"claude-code\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.","description":"Use this prompt to ask Claude Code to add the skill and explain the local activation steps.","copyLabel":"Copy prompt"},{"id":"cursor","label":"Cursor","title":"Cursor rule prompt","kind":"agent-prompt","value":"Turn \"csharp-concurrency-patterns\" from https://github.com/Aaronontheweb/dotnet-skills/tree/master/skills/csharp-concurrency-patterns into a reusable Cursor project rule or agent instruction. Preserve the core workflow, adapt paths to this repo, and keep the rule scoped to tasks where it is relevant. Skill purpose: Choosing the right concurrency abstraction in .NET - from async/await for I/O to Channels for producer/consumer to Akka.NET for stateful entity management. Avoid locks and manual synchronization unless absolutely necessary. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"aaronontheweb-csharp-concurrency-patterns\",\"task\":\"Install csharp-concurrency-patterns\",\"agent\":\"cursor\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.","description":"Use this when installing as Cursor project rules or reusable agent instructions.","copyLabel":"Copy prompt"}],"repository":"https://github.com/Aaronontheweb/dotnet-skills/tree/master/skills/csharp-concurrency-patterns","github_repo":"Aaronontheweb/dotnet-skills","version":"1.0.0","license":"MIT","urls":{"web":"https://www.openagentskill.com/skills/aaronontheweb-csharp-concurrency-patterns","repository":"https://github.com/Aaronontheweb/dotnet-skills/tree/master/skills/csharp-concurrency-patterns","api":"/api/agent/skills/aaronontheweb-csharp-concurrency-patterns","install_api":"/api/skills/aaronontheweb-csharp-concurrency-patterns/install"},"meta":{"created_at":"2026-09-02T12:11:43.494234+00:00","updated_at":"2026-09-02T12:11:43.554372+00:00","agent_friendly":true}}