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Overview

Field notes from building and evaluating AI agents, developer tools, and agentic systems — including experiments that fail.

News

Blog 28 days ago
Which AI Fetchers Send Which Headers, Measured on a Live Site
What happened when ChatGPT, Claude, Gemini, Grok, Perplexity, Copilot, Mistral, DuckDuckGo, Claude Code and Codex were asked to fetch a page on a live Cloudflare Worker: the User-Agent, Accept and Fetch Metadata headers received, vendor IP-list matches, o
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Blog 28 days ago
How I Separate Readers from Bots on a Static Blog Without JavaScript
Server-side visitor counts are inflated by browser-shaped automation, and the popular open-source tools do not catch it. Here is the ten-minute test that shows your gap, the two rules that close most of it without a script, what AI readership really looks
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Blog 29 days ago
OSS Radar #06: interp-engine, Neuronpedia's New Interpretability Engine, Tested on a Mac
interp-engine, Neuronpedia's new interpretability engine, names 34 hook points once and compares 27 across engines. I audited the code and ran it on a Mac.
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Blog 2 months ago
How I Built First-Party Analytics for a Personal Blog
A code-backed guide to first-party blog analytics with Cloudflare Workers and D1: edge events, privacy, migrations, and public stats.
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Blog 2 months ago
OSS Radar #05: Bun 1.4 Made the Runtime the Dependency
Bun 1.4 moves fifteen package jobs into one Rust-based binary. The package graph shrinks, but compatibility and maintenance move into the runtime.
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Blog 2 months ago
Does llms.txt Work? What a Live Implementation Revealed
Does llms.txt improve AI search? This live audit examines edge data, agent tools, Markdown, and GEO evidence-then shows what to build and measure.
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Blog 2 months ago
OSS Radar #04: The Agent Multiplexer Is Becoming a Runtime
Herdr gives coding agents durable terminal sessions, agent state, and a control API. Screen-derived semantics remain its limit.
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Blog 2 months ago
My Evals Say It Works. I Still Don't Reach for It.
The ghx AI-agent reconnaissance sidecar passed a 90-episode eval at 25 compression. My usage logs show a three-day burst, then silence.
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Blog 2 months ago
Bring Your Own AI Agent Everywhere
AgentPort lets applications attach a user-owned AI agent with scoped grants, private transport, and no new model subscription per app.
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Blog 3 months ago
OSS Radar #03: Buzz Is Slack on AIroids
Buzz gives agents signed accounts and shared local compute. Delegation reliability and private code access remain unfinished.
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