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"2026-04-13T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446b7ee8392", "title": "Rating Systems Compared: Choosing the Right Algorithm", "url": "https://mcginniscommawill.com/posts/2026-04-10-rating-systems-compared/", "published_at": "2026-04-10T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446b8db53e1", "title": "mutmut-mcp: Tests, CI, and Survivor Prioritization", "url": "https://mcginniscommawill.com/posts/2026-04-09-mutmut-mcp-update/", "published_at": "2026-04-09T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446b9988385", "title": "writing-tools-mcp: Still Useful, Now With uvx", "url": "https://mcginniscommawill.com/posts/2026-04-08-writing-tools-mcp-update/", "published_at": "2026-04-08T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446ba3117e3", "title": "todolist-mcp: Dependencies, Kanban, and Where It Fits Now", "url": "https://mcginniscommawill.com/posts/2026-04-07-todolist-mcp-update/", "published_at": "2026-04-07T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446bad0e150", "title": "ContextSwitch Is Now Free", "url": "https://mcginniscommawill.com/posts/2026-04-06-contextswitch-is-now-free/", "published_at": "2026-04-06T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446bad9906a", "title": "Ensemble Rating Systems: Combining the Best of All Worlds", "url": "https://mcginniscommawill.com/posts/2026-04-03-ensemble-rating-system/", "published_at": "2026-04-03T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446bb771ddd", "title": "uvx --from: Run Any Python Tool Directly from GitHub", "url": "https://mcginniscommawill.com/posts/2026-04-01-uvx-run-from-github/", "published_at": "2026-04-01T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446bc0dc0fc", "title": "Building idea.log with SwiftUI and SwiftData", "url": "https://mcginniscommawill.com/posts/2026-03-31-building-idealog-with-swiftui-and-swiftdata/", "published_at": "2026-03-31T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446bcfa32fa", "title": "Sentinel: Using MCP Sampling to Analyze Your Own Tool Security", "url": "https://mcginniscommawill.com/posts/2026-03-30-sentinel-mcp-security-advisor/", "published_at": "2026-03-30T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446bd118002", "title": "The Colley Matrix: A Linear Algebra Approach to Ratings", "url": "https://mcginniscommawill.com/posts/2026-03-27-colley-matrix-rating-system/", "published_at": "2026-03-27T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446be03fdfd", "title": "MCP Sampling and Elicitation: The Features That Make Servers Smart", "url": "https://mcginniscommawill.com/posts/2026-03-25-mcp-sampling-elicitation-guide/", "published_at": "2026-03-25T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446be381cbf", "title": "A Practical Guide to GitHub Branch Protection Rules", "url": "https://mcginniscommawill.com/posts/2026-03-24-github-branch-protection-deep-dive/", "published_at": "2026-03-24T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446bebcb6ca", "title": "Stargazers Now on Homebrew", "url": "https://mcginniscommawill.com/posts/2026-03-23-stargazers-homebrew-release/", "published_at": "2026-03-23T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446bef9ab45", "title": "The DWZ Rating System: German Engineering for Chess Ratings", "url": "https://mcginniscommawill.com/posts/2026-03-20-dwz-rating-system/", "published_at": "2026-03-20T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446bfbb2f6c", "title": "makefile-mcp: Output Caching, Pagination, and Search", "url": "https://mcginniscommawill.com/posts/2026-03-18-makefile-mcp-output-caching/", "published_at": "2026-03-18T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446bfd877d2", "title": "Setting Up a Personal Homebrew Tap with GoReleaser", "url": "https://mcginniscommawill.com/posts/2026-03-17-personal-homebrew-tap/", "published_at": "2026-03-17T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446c0d0475f", "title": "How I Use AI to Act on Ideas, Not Just Collect Them", "url": "https://mcginniscommawill.com/posts/2026-03-16-how-i-use-ai-to-act-on-ideas/", "published_at": "2026-03-16T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446c0f6eb15", "title": "TrueSkill: Microsoft's Rating System for Xbox Live", "url": "https://mcginniscommawill.com/posts/2026-03-13-trueskill-rating-system/", "published_at": "2026-03-13T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446c188141c", "title": "hugo-frontmatter-mcp: Tests, CI, and uvx Support", "url": "https://mcginniscommawill.com/posts/2026-03-11-hugo-frontmatter-mcp-update/", "published_at": "2026-03-11T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446c1975483", "title": "Introducing Vanity: Sync Your GitHub Contributions Across Accounts", "url": "https://mcginniscommawill.com/posts/2026-03-10-introducing-vanity/", "published_at": "2026-03-10T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446c19a7a34", "title": "Maintaining Open Source Libraries Nobody Uses", "url": "https://mcginniscommawill.com/posts/2026-03-09-maintaining-oss-nobody-uses/", "published_at": "2026-03-09T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446c26a5d84", "title": "Bankroll Management with Keeks: Strategy Comparison", "url": "https://mcginniscommawill.com/posts/2026-03-06-strategy-comparison/", "published_at": "2026-03-06T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446c35378f7", "title": "Rampart v0.3: Default Branch Support and HTML Reports", "url": "https://mcginniscommawill.com/posts/2026-03-04-rampart-default-branches-and-html-reports/", "published_at": "2026-03-04T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446c3762853", "title": "Your Ideas Deserve Better Than Apple Notes", "url": "https://mcginniscommawill.com/posts/2026-03-03-your-ideas-deserve-better-than-apple-notes/", "published_at": "2026-03-03T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446c3a352ae", "title": "Team MCP Servers - From Personal Tools to Shared Infrastructure", "url": "https://mcginniscommawill.com/posts/2026-03-02-team-mcp-server-infrastructure/", "published_at": "2026-03-02T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446c4393f67", "title": "Bankroll Management with Keeks: The Naive Strategy", "url": "https://mcginniscommawill.com/posts/2026-02-27-naive-strategy/", "published_at": "2026-02-27T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446c4bf54bf", "title": "AI Regulation One Year Later: What Changed in 2025", "url": "https://mcginniscommawill.com/posts/2026-02-26-ai-regulation-updates-2026/", "published_at": "2026-02-26T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446c4ef5aae", "title": "Introducing Rampart: Branch Protection Rules Across All Your Repos", "url": "https://mcginniscommawill.com/posts/2026-02-25-introducing-rampart/", "published_at": "2026-02-25T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446c53408d4", "title": "category_encoders in the Wild: A Tour of the Research", "url": "https://mcginniscommawill.com/posts/2026-02-24-category-encoders-in-the-wild/", "published_at": "2026-02-24T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446c57255e2", "title": "Winter Reading List 2026", "url": "https://mcginniscommawill.com/posts/2026-02-23-winter-reading-list-2026/", "published_at": "2026-02-23T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446c5bee0e3", "title": "Bankroll Management with Keeks: Dynamic Strategies", "url": "https://mcginniscommawill.com/posts/2026-02-20-dynamic-bankroll-management/", "published_at": "2026-02-20T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446c6a6d977", "title": "The Case for a Dumb Idea App", "url": "https://mcginniscommawill.com/posts/2026-02-18-case-for-a-dumb-idea-app/", "published_at": "2026-02-18T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446c71da608", "title": "python-skills: Packaging Library Development as Claude Skills", "url": "https://mcginniscommawill.com/posts/2026-02-17-python-skills-marketplace/", "published_at": "2026-02-17T00:00:00+00:00" }, { "id": "01a087a3-2b8a-7122-bb89-1446c7ad8a18", "title": "Training a Deep Q-Network for Trading", "url": "https://mcginniscommawill.com/posts/2026-02-16-training-a-deep-q-network-for-trading/", "published_at": "2026-02-16T00:00:00+00:00" } ] posts Claim your blog

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McGinnis, Will

mcginniscommawill.com

2026

The Shape of a Pull Request You Can Trust original ↗

25 Sept 2026

Metering Is a Ledger, Not a Counter original ↗

23 Sept 2026

Trusting X-Forwarded-For Is How Rate Limiting Quietly Stops Working original ↗

21 Sept 2026

An RSS Reader Is an SSRF Machine original ↗

18 Sept 2026

Deduplicating the Result Is Not Deduplicating the Work original ↗

16 Sept 2026

Validate At the Lowest Public Boundary original ↗

14 Sept 2026

The Whole UI Is a Hashtag original ↗

11 Sept 2026

How Date Inference Works, and Why Ambiguity Is the Problem original ↗

9 Sept 2026

Bounded Autonomy: Retry, Escalate, Never Go Silent original ↗

7 Sept 2026

Your API Is Already an MCP Server original ↗

4 Sept 2026

Bradley-Terry: Maximum Likelihood Ratings on an Elo Scale original ↗

2 Sept 2026

Five Backtest Invariants Worth Enforcing In Code original ↗

28 Aug 2026

Evergreen 1.7 Lets the Phone Do the Work original ↗

27 Aug 2026

Same App, Ten Years Apart original ↗

26 Aug 2026

PyGeoHash v3.3.2: Reliability at the Edges original ↗

24 Aug 2026

Summer Reading List 2026 original ↗

23 Aug 2026

Cache Keys Must Come From the Resolved Call original ↗

21 Aug 2026

The Kelly Criterion With Real Payoffs and Real Fees original ↗

19 Aug 2026

The Billing Bug You Can't Have original ↗

17 Aug 2026

Prove the Test Can Fail: Mutate the Fix original ↗

14 Aug 2026

Stars, Views, and Clones Across 63 Repos original ↗

13 Aug 2026

Running GitHub Actions Efficiently original ↗

12 Aug 2026

Rampart v0.8: Full Fleet Coverage and Better Ruleset Support original ↗

11 Aug 2026

Sharing 100 Requests With Every User You Have original ↗

10 Aug 2026

What a Month of Portfolio-Wide Engineering Looks Like original ↗

7 Aug 2026

Programmable Feeds: RSS Is the Bus original ↗

5 Aug 2026

This Blog's Newsletter Now Runs on Emit original ↗

3 Aug 2026

Emit: Pay for Emails, Not Subscribers original ↗

31 Jul 2026

MCP Goes Stateless, and Sampling Goes With It original ↗

30 Jul 2026

Pedal Wrencher Is Back original ↗

29 Jul 2026

Easy Beans (Borracho-Style Pinto Beans)original ↗

28 Jul 2026

Charred Roasted Salsa original ↗

21 Jul 2026

Distilling Skills From a Knowledge Base You Build While You Work original ↗

20 Jul 2026

PyGeoHash v3.3.1: A Round of Sharp-Edge Fixes original ↗

19 Jul 2026

Swamp Club: Deterministic Automation for AI Agents original ↗

15 Jul 2026

Mexican-Style Grilled Meat Marinade (With a Little Miso)original ↗

14 Jul 2026

Setting Up Lexicon with Claude Code and Claude Desktop original ↗

13 Jul 2026

Google's Open Knowledge Format original ↗

11 Jul 2026

Building Reusable Prompt Templates in Lexicon original ↗

8 Jul 2026

The Unified Theory of Food: A Salad-Sandwich Taxonomy original ↗

7 Jul 2026

idea.log Now Has an MCP Server original ↗

6 Jul 2026

Lexicon: A Prompt Library for macOS original ↗

1 Jul 2026

Share Ideas Between idea.log Users with Universal Links original ↗

29 Jun 2026

Automating App Store Connect with Fastlane (and Letting Agents Drive)original ↗

24 Jun 2026

idea.log Comes to macOS original ↗

22 Jun 2026

Into the C: Making PyGeoHash Decode Twice as Fast original ↗

17 Jun 2026

Evergreen Skills - Teaching Claude to Manage Your Relationships original ↗

15 Jun 2026

Evergreen Comes to iPhone and iPad original ↗

12 Jun 2026

Optimizing PyGeoHash Without Touching the C original ↗

10 Jun 2026

Managing Context at Organization Scale original ↗

8 Jun 2026

Yakitori Negima: Chicken, Scallions, and a Pot of Tare original ↗

6 Jun 2026

Benchmarking PyGeoHash: Where It Lands Against the Field original ↗

3 Jun 2026

The OODA Loop for Startup Engineering original ↗

1 Jun 2026

Rampart v0.7: Push Allowlists for Protected Branches original ↗

27 May 2026

Pasta e Piselli: A Simple Italian Pasta with Peas original ↗

25 May 2026

Spring Reading List 2026 original ↗

5 May 2026

The Full McGinnis Stack: An Opinionated Python Developer Setup original ↗

29 Apr 2026

Using Claude Code Hooks to Force uv original ↗

27 Apr 2026

uv Changed How I Think About Python Projects original ↗

24 Apr 2026

Code Archaeology with AI original ↗

22 Apr 2026

Technical Debt Is a Leadership Problem original ↗

20 Apr 2026

You Don't Need a Justfile original ↗

17 Apr 2026

Advanced Makefile Patterns for Python Projects original ↗

15 Apr 2026

Data Science Career original ↗

14 Apr 2026

Hiring Data Scientists: What Actually Matters in 2026 original ↗

14 Apr 2026

A Full SDLC with MCP Servers original ↗

13 Apr 2026

Rating Systems Compared: Choosing the Right Algorithm original ↗

10 Apr 2026

mutmut-mcp: Tests, CI, and Survivor Prioritization original ↗

9 Apr 2026

writing-tools-mcp: Still Useful, Now With uvx original ↗

8 Apr 2026

todolist-mcp: Dependencies, Kanban, and Where It Fits Now original ↗

7 Apr 2026

ContextSwitch Is Now Free original ↗

6 Apr 2026

Ensemble Rating Systems: Combining the Best of All Worlds original ↗

3 Apr 2026

uvx --from: Run Any Python Tool Directly from GitHub original ↗

1 Apr 2026

Building idea.log with SwiftUI and SwiftData original ↗

31 Mar 2026

Sentinel: Using MCP Sampling to Analyze Your Own Tool Security original ↗

30 Mar 2026

The Colley Matrix: A Linear Algebra Approach to Ratings original ↗

27 Mar 2026

MCP Sampling and Elicitation: The Features That Make Servers Smart original ↗

25 Mar 2026

A Practical Guide to GitHub Branch Protection Rules original ↗

24 Mar 2026

Stargazers Now on Homebrew original ↗

23 Mar 2026

The DWZ Rating System: German Engineering for Chess Ratings original ↗

20 Mar 2026

makefile-mcp: Output Caching, Pagination, and Search original ↗

18 Mar 2026

Setting Up a Personal Homebrew Tap with GoReleaser original ↗

17 Mar 2026

How I Use AI to Act on Ideas, Not Just Collect Them original ↗

16 Mar 2026

TrueSkill: Microsoft's Rating System for Xbox Live original ↗

13 Mar 2026

hugo-frontmatter-mcp: Tests, CI, and uvx Support original ↗

11 Mar 2026

Introducing Vanity: Sync Your GitHub Contributions Across Accounts original ↗

10 Mar 2026

Maintaining Open Source Libraries Nobody Uses original ↗

9 Mar 2026

Bankroll Management with Keeks: Strategy Comparison original ↗

6 Mar 2026

Rampart v0.3: Default Branch Support and HTML Reports original ↗

4 Mar 2026

Your Ideas Deserve Better Than Apple Notes original ↗

3 Mar 2026

Team MCP Servers - From Personal Tools to Shared Infrastructure original ↗

2 Mar 2026

Bankroll Management with Keeks: The Naive Strategy original ↗

27 Feb 2026

AI Regulation One Year Later: What Changed in 2025 original ↗

26 Feb 2026

Introducing Rampart: Branch Protection Rules Across All Your Repos original ↗

25 Feb 2026

category_encoders in the Wild: A Tour of the Research original ↗

24 Feb 2026

Winter Reading List 2026 original ↗

23 Feb 2026

Bankroll Management with Keeks: Dynamic Strategies original ↗

20 Feb 2026

The Case for a Dumb Idea App original ↗

18 Feb 2026

python-skills: Packaging Library Development as Claude Skills original ↗

17 Feb 2026

Training a Deep Q-Network for Trading original ↗

16 Feb 2026