Spanr: local-first tracing and evals for Claude Code.

Trace Claude Code sessions.
See where the time and money go.
Cost that reconciles with Claude Code's reported number: computed, reported, and any cost not in the transcript shown explicitly.

tracing: works today
evals: coming
source: open source, coming soon

Want a note when it opens? hello@spanr.dev

From a real Claude Code run.

$ spanr show

duration              76.1s
model calls               7

computed            $0.5630
not in transcript   $0.0237
reported            $0.5868

Computed is Spanr's figure, reported is Claude Code's, and the cost not visible in the transcript is shown explicitly.