Articles on LLMO, AI development, context engineering, and harness engineering.https://kenimoto.dev/enhttps://kenimoto.dev/blog/five-voice-ai-stacks-only-two-under-300ms/https://kenimoto.dev/blog/five-voice-ai-stacks-only-two-under-300ms/I kept reading that voice agents respond under 300ms. I measured 5 stacks against the same 1-minute conversation. Three of them missed the cliff entirely. Here is the P95 latency table for May 2026.Wed, 13 May 2026 00:00:00 GMTvoice-ailatencyrealtime-apiwebrtcbenchmarkshttps://kenimoto.dev/blog/three-sub-agents-reviewed-same-pr-40-percent-disagreement/https://kenimoto.dev/blog/three-sub-agents-reviewed-same-pr-40-percent-disagreement/Three Claude Code sub-agents, one 500-line PR, 41% disagreement, and one hour spent figuring out which findings to keep. Brooks's Law is alive in 2026.Tue, 12 May 2026 00:00:00 GMTclaude-codesub-agentscode-reviewagentshttps://kenimoto.dev/blog/30-llms-txt-files-5-anti-patterns-already-forming/https://kenimoto.dev/blog/30-llms-txt-files-5-anti-patterns-already-forming/I shipped my third llms.txt this month and felt productive. Then I opened 30 production llms.txt files from companies like Stripe, Vercel, and Anthropic. Most of them are already broken in the same five ways.Mon, 11 May 2026 00:00:00 GMTllmollms-txtai-searchanti-patternsaudithttps://kenimoto.dev/blog/openclaw-vs-claude-code-24h/https://kenimoto.dev/blog/openclaw-vs-claude-code-24h/OpenClaw passed 250K GitHub stars in 60 days. I spent 24 hours moving my dev setup off Claude Code to find out what actually breaks. SOUL.md, Gateway, ClawHub, and a quiet 3pm where I almost gave up.Sun, 10 May 2026 00:00:00 GMTaiopenclawclaudecodeagentshttps://kenimoto.dev/blog/spec-driven-development-claude-code-three-failures/https://kenimoto.dev/blog/spec-driven-development-claude-code-three-failures/I called spec-driven development 'overhead' for six months. Then Claude Code wrote a discount feature that applied coupons to itself, three times in a row. Here is what fifteen minutes of OpenAPI bought me.Sat, 09 May 2026 00:00:00 GMTaiclaudecodespecopenapihttps://kenimoto.dev/blog/autonomous-agent-24-hours-security-lessons/https://kenimoto.dev/blog/autonomous-agent-24-hours-security-lessons/I read 'autonomous AI agents' and turned off every permission prompt for a day. Here is the OWASP Agentic Top 10 lesson plan I got back, written in incident reports instead of bullet points.Fri, 08 May 2026 00:00:00 GMTaiagentssecurityclaudecodehttps://kenimoto.dev/blog/og-type-double-emit-three-astro-sites/https://kenimoto.dev/blog/og-type-double-emit-three-astro-sites/I run four Astro sites. Three of them shipped the same SEO bug for months — every blog post told Twitter, Facebook, and LinkedIn it was a website, not an article. Here is what happened, why I did not catch it sooner, and the build-time check that would have caught it on day one.Fri, 08 May 2026 00:00:00 GMTastroseowebdevaihttps://kenimoto.dev/blog/full-context-engineering-rag-80-percent/https://kenimoto.dev/blog/full-context-engineering-rag-80-percent/I read about Full Context Engineering and immediately added structured output, hierarchical layout, role definition, and few-shot examples to my RAG pipeline. Sonnet got 12% better. Haiku got 14% worse. Here is what the numbers actually mean for your AI architecture in 2026.Thu, 07 May 2026 00:00:00 GMTcontext-engineeringragllmai-architecturehttps://kenimoto.dev/blog/natural-language-agent-harnesses-arxiv/https://kenimoto.dev/blog/natural-language-agent-harnesses-arxiv/An arXiv paper renamed something I'd been building all year. Here's what 'Natural-Language Agent Harnesses' (2603.25723) gave me — and why the vocabulary upgrade made my team meetings 30% shorter.Wed, 06 May 2026 00:00:00 GMTaiclaudecodeharnessagentshttps://kenimoto.dev/blog/claude-code-skills-reusable-workflow-pattern/https://kenimoto.dev/blog/claude-code-skills-reusable-workflow-pattern/I copy-pasted the same prompt 47 times last month before noticing Claude Code already had Skills. Here's the frontmatter that matters and the migration path.Tue, 05 May 2026 00:00:00 GMTclaude-codeanthropicai-agentsdeveloper-toolsskillshttps://kenimoto.dev/blog/new-domain-first-week-ga4-is-a-lie/https://kenimoto.dev/blog/new-domain-first-week-ga4-is-a-lie/Four days after registering a new domain, GA4 showed 65 PV / 34 users across 9 countries. Before celebrating, I beat the data with 5 signals. What survived: a handful of humans, and a tireless army of crawlers.Tue, 05 May 2026 00:00:00 GMTga4analyticsllmobuild-in-publicbot-traffichttps://kenimoto.dev/blog/claude-code-vs-chatgpt-codex-official-agents/https://kenimoto.dev/blog/claude-code-vs-chatgpt-codex-official-agents/I spent a month switching between Claude Code and ChatGPT Codex. They aren't the same tool, they aren't even the same idea, and the cheapest answer turned out to be running both. Here's the workflow.Mon, 04 May 2026 00:00:00 GMTclaude-codechatgpt-codexai-agentsdeveloper-toolsanthropicopenaihttps://kenimoto.dev/blog/five-ai-search-engines-architecture-llmo/https://kenimoto.dev/blog/five-ai-search-engines-architecture-llmo/I asked five AI search engines the same question. The answers were all different. Here's how each platform decides what gets cited, and what you can do about it.Sun, 03 May 2026 00:00:00 GMTllmoai-searchseoarchitecturecontent-strategyhttps://kenimoto.dev/blog/measure-ai-citations-llmo-kpi/https://kenimoto.dev/blog/measure-ai-citations-llmo-kpi/Nothing tracks whether AI is citing your site. Here's how to measure LLMO visibility with GA4, Python scripts, and a 30-minute monthly protocol.Sat, 02 May 2026 00:00:00 GMTllmoai-searchseomeasurementanalyticshttps://kenimoto.dev/blog/geo-princeton-study-9-ways-ai-cites-you/https://kenimoto.dev/blog/geo-princeton-study-9-ways-ai-cites-you/The GEO paper benchmarked 10,000 queries and found that statistics, citations, and technical terms beat every SEO trick in the book. Here's what actually moves the needle for AI visibility.Fri, 01 May 2026 00:00:00 GMTllmogeoai-searchseocontent-optimizationhttps://kenimoto.dev/blog/cheap-model-won-context-beats-parameters/https://kenimoto.dev/blog/cheap-model-won-context-beats-parameters/Haiku + RAG scored 11.8. Sonnet alone scored 5.3. The cheaper model more than doubled Sonnet's score, at 1/12th the cost. Here's why context design matters more than model size.Thu, 30 Apr 2026 00:00:00 GMTcontext-engineeringragllmcost-optimizationai-architecturehttps://kenimoto.dev/blog/9-bugs-in-my-ai-pipeline/https://kenimoto.dev/blog/9-bugs-in-my-ai-pipeline/I tested my autonomous content pipeline 6 times and found 9 bugs. The model caused exactly zero of them. Here's what actually broke.Thu, 30 Apr 2026 00:00:00 GMTharness-engineeringclaude-codeai-agentautomationdevopshttps://kenimoto.dev/blog/llms-txt-ai-find-your-site/https://kenimoto.dev/blog/llms-txt-ai-find-your-site/robots.txt has been the web's gatekeeper for 30 years. llms.txt is the new concierge for AI. Here's how to implement it, who's already done it, and why the biggest risk is doing nothing.Thu, 30 Apr 2026 00:00:00 GMTllmoai-searchseollms-txtweb-standardshttps://kenimoto.dev/blog/hello-world/https://kenimoto.dev/blog/hello-world/I tested my AI article pipeline 6 times and found 9 bugs. None were the model's fault.Wed, 29 Apr 2026 00:00:00 GMTharness-engineeringclaude-codeai-agent