[⊙] claude lens

Build retrospective · July 2026

One engineer + an agent pipeline

A full product. Live.

Claude Code observability, rebuilt and shipped in three weeks.

12production surfaces

54merged V2 pull requests

DAY 18live on npm

Scope: Jul 3–24 · excludes pre-V2 PR #2 (+3) · 127,117 V2 additions

[⊙] claude lens

12 shipped surfaces

One product · twelve questions

From fleet signal to one turn.

01Dashboardspend + burn

02Sessionsfleet index

03Session Detailfull trace

04Turn Inspectorcausal evidence

05Projectsportfolio

06Modelsmix + price

07Cache Labreuse economics

08Trendscalendar + budget

09Report Cardquality gates

10Explorepivot builder

11Data Healthcoverage + trust

12Settingscontrol plane

[⊙] claude lens

Architecture

Built like a system, not a demo

Fast because it reads only what changed.

A local data plane from raw transcript to live interface.

INPUTClaude transcripts~/.claude/**/*.jsonl + optional cost capture

TAILIncremental ingestbyte offsets · dedupe · warm-start cache

COREMetrics enginecalls · turns · sessions · dimensions

EDGEFastify API + WebSocketone process · invalidations only

VIEWReact product12 pages · filters · charts · exports

[⊙] claude lens

The plan

Evidence first · product second

The build order removed guesswork.

Every V2 pull request traced to a numbered plan task.

54 scoped V2 PRs · pre-V2 PR #2 excluded

Jul 5Specs#5 · gates + phased plan

Jul 10ToolchainTS · CI · Biome · Storybook

Jul 11Engineingest · metrics · API · WS

Jul 14Shellrouting · filters · charts

Jul 1612 pagesE2E · lanes · product blitz

Jul 19Hardenload fixes · capture · bench

[⊙] claude lens

Safe parallelism

Then the build went wide

Isolated to build. Integrated at merge.

62,865additions · 12 PRs · one weekend

.worktrees/89Dashboardisolated ✓

.worktrees/93Sessionsisolated ✓

.worktrees/92Session Detailisolated ✓

.worktrees/91Cache Labisolated ✓

ISOLATE → build → verify → serialized merge → verify again

[⊙] claude lens

Merge history · additions per day

49%

of the entire V2 build landed in one weekend.

Jul 18–19 · 12 merged PRs

[⊙] claude lens

Quality · built in

The gates changed outcomes

Review wasn't theater.

Three receipts from the merge history.

strict TSBiomeVitestCypressa11yStorybook

#68 · REVERT

Wrong archive convention

The spec rule won; the rename did not survive review.

#95 · FIX

Concurrent-load flicker

Real multi-session pressure exposed an integration defect.

#114 · FIX

Sub-agent session routing

Child transcripts were reassigned to their parent sessions.

[⊙] claude lens

Production

Published before the build stopped

Live on npm by day 18.

Ship. Measure. Harden.

npx @foyzulkarim/claude-lens@latest

npm release · Jul 21 DAY 18

v1.0.0 and v1.0.1 shipped while final Phase 5 pull requests were still landing.

235 downloads in the first ~48 hours

[⊙] claude lens

The takeaway

The model typed fast · the system shipped

The pipeline made the 21 days.

github.com/foyzulkarim/claude-lens github.com/foyzulkarim/skills npm package

Specssettle

Gatesdecide

Lanesmultiply