KQ-2076 · RERUN/BENCH

Rerun Bench

A debugging bench for one recorded tool call: its arguments as real fields beside its response as indented rows. Editing an argument dims the response in place as stale; when the fresh run arrives one accent line sweeps down and each row's new value drops in on springs.flick as it passes, fields that differ flash once and keep a change mark that grows in on springs.snap, and the run strip's selection slides on snap. Cmd or Ctrl+Enter re-runs, Alt with Up and Down steps through earlier runs, the strip is a radiogroup on the arrow keys, and Escape in an edited field restores it.

KQ-2076 · RERUN/BENCH

Fernworks support · Larkspur Studio · billing question

lookup_customerfernworks-crm7 fields changed

Requestas run #2

customer_id

as_of

include

currency

max_invoices

include_archived

Response#2 · 3 min ago185 ms−13

id: "C-20417"
name: "Larkspur Studio"
plan: "Team"
seats: 14, changed, was 13
status: "active"
balance: "€680.00", changed, was "€0.00"
last_invoice: { 4 fields }
number: "INV-9034", changed, was "INV-8812"
date: "2026-10-14", changed, was "2026-09-14"
amount: "€680.00", changed, was "€620.00"
status: "open", changed, was "paid"
invoices: ["INV-9034", "INV-8812"], changed, was ["INV-8812", "INV-8590"]

run #2 of 2 · 185 ms · re-run of #1 · fernworks crm

Open it on the Canvas stage

Install

One command — the source lands in your repo. Or copy it from the Code tab.

$ pnpm dlx shadcn@latest add @kinetiq/rerun-bench

Props

diffStyle: "gutter" | "inline" | "wash"; default "gutter"; How a changed field keeps its mark: a bar in the gutter, the old value struck through before the new one, or a soft wash on the row.
density: "compact" | "cozy" | "roomy"; default "cozy"; Row height, field height and type size.
accent: string; default "var(--accent-bright)"; Selection, change marks, the sweep and Re-run — any CSS colour.
call: RerunBenchCall; default defaultRerunCall; The tool, its server and every parameter it takes (name, type string/number/boolean/enum, options, description, required).
runs: RerunBenchRun[]; default defaultRerunRuns; Every run oldest first: args, response (any JSON), ms, at, from (the run it was re-run from), recorded, error.
run / defaultRun: string; default — / the newest run; The id of the run on the bench, controlled or initial. Uncontrolled, the bench moves to each new run as it arrives.
onRunChange: (id: string) => void; default —; Fires from the pick or the Alt+Up/Down step that changed the run.
args: RerunBenchArgs; default —; Controlled argument draft. Uncontrolled, the draft starts as the shown run's arguments and resets when the run changes.
onArgsChange: (args: RerunBenchArgs) => void; default —; Fires from every edit, restore or run change with the whole draft.
onRerun: (args: RerunBenchArgs, fromRunId: string) => void; default —; Re-run or Cmd/Ctrl+Enter: call the tool with these arguments. Add the result to runs to stream it in.
onRestore: (runId: string) => void; default —; Restore: the draft went back to this run's arguments.
onSaveAsTest: (run: RerunBenchRun) => void; default —; Save as test: keep this run's arguments and response as a test case.
status: "ready" | "loading" | "running"; default "ready"; loading shows skeleton fields and rows; running keeps the response dimmed with a scanning hairline.
error: string | null; default null; The last re-run never came back: shown over the response with Retry.
now: number; default defaultRerunNow; The moment relative run times count from, in ms.
baseline: "previous" | "recorded"; default "previous"; What a run's marks are drawn against: the run it was re-run from, or the recorded call.
streamMs: number; default 520; How long a fresh response takes to stream over the stale one, in ms.
label: string; default "<tool> rerun bench"; The bench's accessible name.
disabled: boolean; default false; Read only: nothing can be edited or re-run.
className: string; default —; Classes for the outer surface.

Prop	Type	Default	Description
diffStyle	"gutter" \| "inline" \| "wash"	"gutter"	How a changed field keeps its mark: a bar in the gutter, the old value struck through before the new one, or a soft wash on the row.
density	"compact" \| "cozy" \| "roomy"	"cozy"	Row height, field height and type size.
accent	string	"var(--accent-bright)"	Selection, change marks, the sweep and Re-run — any CSS colour.
call	RerunBenchCall	defaultRerunCall	The tool, its server and every parameter it takes (name, type string/number/boolean/enum, options, description, required).
runs	RerunBenchRun[]	defaultRerunRuns	Every run oldest first: args, response (any JSON), ms, at, from (the run it was re-run from), recorded, error.
run / defaultRun	string	— / the newest run	The id of the run on the bench, controlled or initial. Uncontrolled, the bench moves to each new run as it arrives.
onRunChange	(id: string) => void	—	Fires from the pick or the Alt+Up/Down step that changed the run.
args	RerunBenchArgs	—	Controlled argument draft. Uncontrolled, the draft starts as the shown run's arguments and resets when the run changes.
onArgsChange	(args: RerunBenchArgs) => void	—	Fires from every edit, restore or run change with the whole draft.
onRerun	(args: RerunBenchArgs, fromRunId: string) => void	—	Re-run or Cmd/Ctrl+Enter: call the tool with these arguments. Add the result to runs to stream it in.
onRestore	(runId: string) => void	—	Restore: the draft went back to this run's arguments.
onSaveAsTest	(run: RerunBenchRun) => void	—	Save as test: keep this run's arguments and response as a test case.
status	"ready" \| "loading" \| "running"	"ready"	loading shows skeleton fields and rows; running keeps the response dimmed with a scanning hairline.
error	string \| null	null	The last re-run never came back: shown over the response with Retry.
now	number	defaultRerunNow	The moment relative run times count from, in ms.
baseline	"previous" \| "recorded"	"previous"	What a run's marks are drawn against: the run it was re-run from, or the recorded call.
streamMs	number	520	How long a fresh response takes to stream over the stale one, in ms.
label	string	"<tool> rerun bench"	The bench's accessible name.
disabled	boolean	false	Read only: nothing can be edited or re-run.
className	string	—	Classes for the outer surface.