sparticle loop · field notes · est. 2026

Field notes from building with agents.

A sparticle is a particle's shadow twin — same work, different means. So is an agent. Christopher Ezell, agentic engineering explorer, wanders the two worlds and logs where their particles pair.

6 entries0 democurrent 2026-W31

The Loop

weekly · newest first

One entry per week: what the agents built, where the loop broke, and what changed in the harness.

2026-07-30 · WEEK 31 · 6 min Building Spectroscope, part 6: the instrument turned on itself Every number in this series was measured from real session logs by the same kind of reader Spectroscope ships: 490M billable tokens across 2,388 session files, as of this writing. The instrument had to pass its own audit first. The Loop

2026-07-29 · WEEK 31 · 5 min Building Spectroscope, part 5: ship week Four days after going public: signed artifacts on Maven Central, a Python edition that reproduces the Java wire format byte for byte, a native OTel exporter, and an edu-suite that teaches the tool. The voice rule for all of it: a laboratory instrument, not AI hype. The Loop

2026-07-28 · WEEK 31 · 5 min Building Spectroscope, part 4: the same-day pivot One project ends and its successor begins inside twenty-four hours. Two jury rounds reject seventy-two name candidates before physics wins, and a six-phase migration flips the repo public, bit-identical and verified from an anonymous account. The Loop

2026-07-27 · WEEK 31 · 5 min Building Spectroscope, part 3: one core, many faces, one stream A ten-stage teaching workshop built a harness from scratch, and one design decision carried the whole course: a typed JSONL event stream that is API, storage format, UI protocol and audit log at once. The Loop

2026-07-26 · WEEK 30 · 5 min Building Spectroscope, part 2: survey seventeen frameworks, take zero dependencies Two survey generations, seventeen framework profiles, fifteen repositories pinned at exact commits. The conclusion was to adopt none of them: borrow the vocabulary, take no dependencies. The Loop

2026-07-25 · WEEK 30 · 4 min Building Spectroscope, part 1: it started with a habit of watching Before there was a product, there was a 300-line habit: split every agent session into a reading view and an audit trace. One parse produces two views, and no LLM sits anywhere in the loop. Everything since grew out of that split. The Loop