diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index 1c56aafc22..a1a1e26750 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -10,6 +10,7 @@
 			"dependencies": {
 				"@fortawesome/free-brands-svg-icons": "^6.2.0",
 				"@fortawesome/free-solid-svg-icons": "^6.2.0",
+				"@redocly/json-to-json-schema": "^0.0.1",
 				"async-mutex": "^0.4.0",
 				"fuse.js": "^6.4.6",
 				"highlight.js": "^11.5.1",
@@ -403,6 +404,11 @@
 				"url": "https://opencollective.com/popperjs"
 			}
 		},
+		"node_modules/@redocly/json-to-json-schema": {
+			"version": "0.0.1",
+			"resolved": "https://registry.npmjs.org/@redocly/json-to-json-schema/-/json-to-json-schema-0.0.1.tgz",
+			"integrity": "sha512-dSMyuNPN2k+tFeNZ0+QJ7S1zDJ0UeNL+lpnPFR9K5avj2V4uG4m6FdjrApQ9Zi35AIocaDp/KGfBD9gR5MLUbQ=="
+		},
 		"node_modules/@rollup/pluginutils": {
 			"version": "4.2.1",
 			"resolved": "https://registry.npmjs.org/@rollup/pluginutils/-/pluginutils-4.2.1.tgz",
@@ -6847,6 +6853,11 @@
 			"dev": true,
 			"peer": true
 		},
+		"@redocly/json-to-json-schema": {
+			"version": "0.0.1",
+			"resolved": "https://registry.npmjs.org/@redocly/json-to-json-schema/-/json-to-json-schema-0.0.1.tgz",
+			"integrity": "sha512-dSMyuNPN2k+tFeNZ0+QJ7S1zDJ0UeNL+lpnPFR9K5avj2V4uG4m6FdjrApQ9Zi35AIocaDp/KGfBD9gR5MLUbQ=="
+		},
 		"@rollup/pluginutils": {
 			"version": "4.2.1",
 			"resolved": "https://registry.npmjs.org/@rollup/pluginutils/-/pluginutils-4.2.1.tgz",
diff --git a/frontend/package.json b/frontend/package.json
index 3a3b3e5c85..b6c5f2ef36 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -56,6 +56,7 @@
 	"dependencies": {
 		"@fortawesome/free-brands-svg-icons": "^6.2.0",
 		"@fortawesome/free-solid-svg-icons": "^6.2.0",
+		"@redocly/json-to-json-schema": "^0.0.1",
 		"async-mutex": "^0.4.0",
 		"fuse.js": "^6.4.6",
 		"highlight.js": "^11.5.1",
diff --git a/frontend/src/lib/components/FlowPreviewContent.svelte b/frontend/src/lib/components/FlowPreviewContent.svelte
index 574c895ad9..5b820c813b 100644
--- a/frontend/src/lib/components/FlowPreviewContent.svelte
+++ b/frontend/src/lib/components/FlowPreviewContent.svelte
@@ -12,7 +12,9 @@
 	import FlowStatusViewer from '../components/FlowStatusViewer.svelte'
 	import FlowProgressBar from './flows/FlowProgressBar.svelte'
 	import { flowStateStore } from './flows/flowState'
+	import CapturePayload from './flows/content/CapturePayload.svelte'
 
+	let capturePayload: CapturePayload
 	export let previewMode: 'upTo' | 'whole'
 	export let open: boolean
 
@@ -89,19 +91,33 @@
 	}
 </script>
 
+<CapturePayload bind:this={capturePayload} />
+
 <svelte:window on:keydown={onKeyDown} />
 
 <div class="flex divide-y flex-col space-y-2 h-screen bg-white p-6 w-full">
-	<div class="flex justify-between">
-		<div class="flex flex-row justify-center items-center ">
+	<div class="flex justify-between w-full ">
+		<div class="flex flex-row justify-center items-center w-full mr-4">
 			<div class="flex justify-center p-2 w-8 h-8 bg-blue-200 rounded-lg mr-2 ">
 				<Icon data={faPlay} scale={1} class="text-blue-500" />
 			</div>
 
-			<h3 class="text-lg leading-6 font-bold text-gray-900">
-				Test preview - {previewMode === 'upTo'
-					? `up to step ${$selectedId.split('-').join(',')}`
-					: ' whole flow'}
+			<h3
+				class="text-lg leading-6 font-bold text-gray-900 inline-flex flex-row justify-between w-full"
+			>
+				<div>
+					Test preview - {previewMode === 'upTo'
+						? `up to step ${$selectedId.split('-').join(',')}`
+						: ' whole flow'}
+				</div>
+				<Button
+					btnClasses="ml-2"
+					size="sm"
+					variant="border"
+					on:click={() => {
+						capturePayload.openDrawer()
+					}}>Fill test args from payload</Button
+				>
 			</h3>
 		</div>
 		<Button
diff --git a/frontend/src/lib/components/SchemaEditor.svelte b/frontend/src/lib/components/SchemaEditor.svelte
index 515511d9b3..e629f22362 100644
--- a/frontend/src/lib/components/SchemaEditor.svelte
+++ b/frontend/src/lib/components/SchemaEditor.svelte
@@ -190,7 +190,7 @@
 									<td>
 										<SchemaEditorProperty {property} />
 									</td>
-									<td>{property.description}</td>
+									<td>{property.description ?? ''}</td>
 									<td>{property.default ? JSON.stringify(property.default) : ''}</td>
 									<td
 										>{#if schema.required.includes(name)}
diff --git a/frontend/src/lib/components/SchemaViewer.svelte b/frontend/src/lib/components/SchemaViewer.svelte
index ab350132f1..afe4580818 100644
--- a/frontend/src/lib/components/SchemaViewer.svelte
+++ b/frontend/src/lib/components/SchemaViewer.svelte
@@ -8,6 +8,7 @@
 	import Tab from './common/tabs/Tab.svelte'
 	import TabContent from './common/tabs/TabContent.svelte'
 	import Tabs from './common/tabs/Tabs.svelte'
+	import { Badge } from './common'
 
 	export let schema: Schema | undefined = emptySchema()
 </script>
@@ -32,11 +33,13 @@
 							<tbody slot="body">
 								{#each Object.entries(schema.properties) as [name, property] (name)}
 									<tr>
-										<td>{name}</td>
+										<td class="font-semibold pl-1">{name}</td>
 										<td
-											>{#if !property.type} any {:else} {property.type} {/if}</td
+											><Badge color="blue"
+												>{#if !property.type} any {:else} {property.type} {/if}</Badge
+											></td
 										>
-										<td>{property.description}</td>
+										<td>{property.description ?? ''}</td>
 										<td
 											>{property.default == '<function call>'
 												? '<function call>'
diff --git a/frontend/src/lib/components/ScriptEditor.svelte b/frontend/src/lib/components/ScriptEditor.svelte
index 0a1818a8e9..42d259d1fe 100644
--- a/frontend/src/lib/components/ScriptEditor.svelte
+++ b/frontend/src/lib/components/ScriptEditor.svelte
@@ -17,6 +17,7 @@
 	import { Button, Kbd } from './common'
 	import SplitPanesWrapper from './splitPanes/SplitPanesWrapper.svelte'
 	import Tooltip from './Tooltip.svelte'
+	import WindmillIcon from './icons/WindmillIcon.svelte'
 
 	// Exported
 	export let schema: Schema = emptySchema()
@@ -177,16 +178,13 @@
 			<Pane size={67}>
 				<div class="px-2 py-1 w-full">
 					{#if testIsLoading}
-						<Button
-							on:click={testJobLoader?.cancelJob}
-							btnClasses="w-full"
-							color="red"
-							size="xs"
-							startIcon={{
-								icon: faRotateRight,
-								classes: 'animate-spin'
-							}}
-						>
+						<Button on:click={testJobLoader?.cancelJob} btnClasses="w-full" color="red" size="xs">
+							<WindmillIcon
+								white={true}
+								class="animate-[spin_5s_linear_infinite] mr-2 text-white"
+								height="20px"
+								width="20px"
+							/>
 							Cancel
 						</Button>
 					{:else}
diff --git a/frontend/src/lib/components/common/button/Button.svelte b/frontend/src/lib/components/common/button/Button.svelte
index 2bf93e3e3b..9c73a0299d 100644
--- a/frontend/src/lib/components/common/button/Button.svelte
+++ b/frontend/src/lib/components/common/button/Button.svelte
@@ -61,7 +61,8 @@
 			'focus:ring-4 font-semibold',
 			'rounded-md',
 			'justify-center items-center text-center whitespace-nowrap inline-flex',
-			btnClasses
+			btnClasses,
+			disabled ? 'bg-gray-200' : ''
 		),
 		disabled,
 		href,
diff --git a/frontend/src/lib/components/common/drawer/Drawer.svelte b/frontend/src/lib/components/common/drawer/Drawer.svelte
index 23726352b9..aa56695673 100644
--- a/frontend/src/lib/components/common/drawer/Drawer.svelte
+++ b/frontend/src/lib/components/common/drawer/Drawer.svelte
@@ -61,7 +61,7 @@
 
 <svelte:window on:keydown={onKeyDown} />
 
-<aside class="drawer" class:open class:close={!open} {style}>
+<aside class="drawer" class:open class:close={!open && timeout} {style}>
 	<div class="overlay" on:click={handleClickAway} />
 	<div class="panel {placement}" class:size>
 		{#if open || !timeout}
diff --git a/frontend/src/lib/components/flows/content/CapturePayload.svelte b/frontend/src/lib/components/flows/content/CapturePayload.svelte
new file mode 100644
index 0000000000..b39f51df91
--- /dev/null
+++ b/frontend/src/lib/components/flows/content/CapturePayload.svelte
@@ -0,0 +1,96 @@
+<script lang="ts">
+	import { page } from '$app/stores'
+	import { Button } from '$lib/components/common'
+	import Drawer from '$lib/components/common/drawer/Drawer.svelte'
+	import DrawerContent from '$lib/components/common/drawer/DrawerContent.svelte'
+	import WindmillIcon from '$lib/components/icons/WindmillIcon.svelte'
+	import ObjectViewer from '$lib/components/propertyPicker/ObjectViewer.svelte'
+
+	import { CaptureService } from '$lib/gen'
+	import { workspaceStore } from '$lib/stores'
+	import { flowStore } from '../flowStore'
+
+	import { convert } from '@redocly/json-to-json-schema'
+	import SchemaViewer from '$lib/components/SchemaViewer.svelte'
+	import { getContext } from 'svelte'
+	import type { FlowEditorContext } from '../types'
+
+	const { previewArgs } = getContext<FlowEditorContext>('FlowEditorContext')
+
+	let drawer: Drawer
+	let interval: NodeJS.Timeout | undefined = undefined
+	let captureInput: any | undefined = undefined
+	let jsonSchema: any = undefined
+
+	export function openDrawer() {
+		drawer.openDrawer()
+	}
+
+	async function startCapturePoint() {
+		await CaptureService.createCapture({
+			workspace: $workspaceStore!,
+			path: $flowStore.path
+		})
+	}
+
+	async function getCaptureInput() {
+		const capture = await CaptureService.getCapture({
+			workspace: $workspaceStore!,
+			path: $flowStore.path
+		})
+		captureInput = capture
+		jsonSchema = { required: [], ...convert(capture) }
+	}
+</script>
+
+<Drawer
+	bind:this={drawer}
+	on:open={() => {
+		startCapturePoint()
+		interval = setInterval(() => {
+			getCaptureInput()
+		}, 1000)
+	}}
+	on:close={() => interval && clearInterval(interval)}
+>
+	<DrawerContent title="Capture from a request to seed inputs" on:close={drawer.closeDrawer}>
+		Send a payload at: <div
+			><a
+				class="text-2xl"
+				href="{$page.url.protocol}//{$page.url
+					.hostname}/api/w/{$workspaceStore}/capture/{$flowStore.path}"
+				>{$page.url.protocol}//{$page.url
+					.hostname}/api/w/{$workspaceStore}/capture/{$flowStore.path}</a
+			></div
+		>
+		<div class="items-center flex flex-row gap-x-2 text-xs text-gray-600">
+			Listening for new payload
+			<WindmillIcon
+				class="animate-[pulse_5s_linear_infinite] animate-[spin_5s_linear_infinite]"
+			/></div
+		>
+		<div class="box p-2 my-2">
+			<ObjectViewer topBrackets={true} json={captureInput} />
+		</div>
+		<div class="flex flex-row gap-2">
+			<Button
+				size="sm"
+				on:click={() => {
+					$previewArgs = captureInput
+					$flowStore.schema = jsonSchema
+				}}>Copy as flow inputs and test args</Button
+			>
+			<Button
+				size="sm"
+				variant="border"
+				on:click={() => {
+					$previewArgs = captureInput
+				}}>Copy only as test args</Button
+			>
+		</div>
+		<h3 class="mt-2">JSONSchema</h3>
+		<div class="box p-2">
+			<SchemaViewer schema={jsonSchema} />
+		</div>
+	</DrawerContent>
+</Drawer>
diff --git a/frontend/src/lib/components/flows/content/CopyFirstStepSchema.svelte b/frontend/src/lib/components/flows/content/CopyFirstStepSchema.svelte
deleted file mode 100644
index ae933572af..0000000000
--- a/frontend/src/lib/components/flows/content/CopyFirstStepSchema.svelte
+++ /dev/null
@@ -1,15 +0,0 @@
-<script lang="ts">
-	import Button from '$lib/components/common/button/Button.svelte'
-	import { copyFirstStepSchema, flowStore } from '../flowStore'
-	import { isEmptyFlowModule } from '../utils'
-</script>
-
-<Button
-	color="light"
-	size="xs"
-	disabled={$flowStore.value.modules.length === 0 || isEmptyFlowModule($flowStore.value.modules[0])}
-	on:click={copyFirstStepSchema}
-	variant="border"
->
-	Copy from first step schema
-</Button>
diff --git a/frontend/src/lib/components/flows/content/FlowInput.svelte b/frontend/src/lib/components/flows/content/FlowInput.svelte
index 996114fc27..436d6a8df9 100644
--- a/frontend/src/lib/components/flows/content/FlowInput.svelte
+++ b/frontend/src/lib/components/flows/content/FlowInput.svelte
@@ -1,15 +1,42 @@
 <script lang="ts">
-	import { flowStore } from '$lib/components/flows/flowStore'
+	import { Button } from '$lib/components/common'
+
 	import SchemaEditor from '$lib/components/SchemaEditor.svelte'
 	import SchemaForm from '$lib/components/SchemaForm.svelte'
 	import FlowCard from '../common/FlowCard.svelte'
+	import { copyFirstStepSchema, flowStore } from '../flowStore'
+	import { isEmptyFlowModule } from '../utils'
+	import CapturePayload from './CapturePayload.svelte'
 
-	import CopyFirstStepSchema from './CopyFirstStepSchema.svelte'
+	let capturePayload: CapturePayload
 </script>
 
+<CapturePayload bind:this={capturePayload} />
 <FlowCard title="Flow Inputs">
 	<div slot="header">
-		<CopyFirstStepSchema />
+		<div class="flex flex-row space-x-4">
+			<Button
+				color="light"
+				size="sm"
+				on:click={() => {
+					capturePayload.openDrawer()
+				}}
+				variant="border"
+			>
+				Capture from a request to seed inputs
+			</Button>
+			<Button
+				color="light"
+				size="sm"
+				disabled={$flowStore.value.modules.length === 0 ||
+					isEmptyFlowModule($flowStore.value.modules[0])}
+				on:click={copyFirstStepSchema}
+				variant="border"
+			>
+				Copy from first step schema {#if $flowStore.value.modules.length === 0 || isEmptyFlowModule($flowStore.value.modules[0])}
+					(no steps to copy from!){/if}
+			</Button>
+		</div>
 	</div>
 	<div>
 		<div class="p-6">
diff --git a/frontend/src/lib/components/icons/WindmillIcon.svelte b/frontend/src/lib/components/icons/WindmillIcon.svelte
index df6df84651..84d504257e 100644
--- a/frontend/src/lib/components/icons/WindmillIcon.svelte
+++ b/frontend/src/lib/components/icons/WindmillIcon.svelte
@@ -1,10 +1,12 @@
 <script lang="ts">
 	export let height = '24px'
 	export let width = '24px'
+	export let white = false
 </script>
 
 <!-- Generator: Adobe Illustrator 26.5.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
 <svg
+	class={$$props.class}
 	version="1.1"
 	id="Calque_1"
 	xmlns="http://www.w3.org/2000/svg"
@@ -74,16 +76,19 @@
 			points="134.78,14.22 114.31,48.21 101.33,69.75 158.22,69.75 177.97,36.95 191.67,14.22 	"
 		/>
 		<polygon
-			class="st3"
+			class:st3={!white}
+			class:st0={white}
 			points="227.55,69.75 186.61,69.75 101.33,69.75 129.78,119.02 158.16,119.02 228.61,119.02 256,119.02 	"
 		/>
 		<polygon
-			class="st3"
+			class:st3={!white}
+			class:st0={white}
 			points="136.93,132.47 116.46,167.93 73.82,241.78 130.71,241.78 144.9,217.2 180.13,156.18 193.82,132.46 	
 		"
 		/>
 		<polygon
-			class="st3"
+			class:st3={!white}
+			class:st0={white}
 			points="121.7,131.95 101.23,96.49 58.59,22.63 30.15,71.91 44.34,96.49 79.57,157.5 93.26,181.22 	"
 		/>
 		<polygon
diff --git a/frontend/src/routes/__layout@root.svelte b/frontend/src/routes/__layout@root.svelte
index b274fd9e54..d48b478c46 100644
--- a/frontend/src/routes/__layout@root.svelte
+++ b/frontend/src/routes/__layout@root.svelte
@@ -14,6 +14,7 @@
 	import { beforeNavigate } from '$app/navigation'
 	import UserSettings from '$lib/components/UserSettings.svelte'
 	import SuperadminSettings from '$lib/components/SuperadminSettings.svelte'
+	import WindmillIcon from '$lib/components/icons/WindmillIcon.svelte'
 
 	OpenAPI.WITH_CREDENTIALS = true
 
@@ -180,7 +181,7 @@
 {:else}
 	<CenteredModal title="Loading user">
 		<div class="mx-auto w-0">
-			<Icon class="animate-spin" data={faSpinner} scale={2.0} />
+			<WindmillIcon class="animate-[spin_5s_linear_infinite]" height="80px" width="80px" />
 		</div>
 	</CenteredModal>
 {/if}
diff --git a/frontend/src/routes/oauth/callback_slack.svelte b/frontend/src/routes/oauth/callback_slack.svelte
index 8fc1a28690..9489683681 100644
--- a/frontend/src/routes/oauth/callback_slack.svelte
+++ b/frontend/src/routes/oauth/callback_slack.svelte
@@ -9,6 +9,7 @@
 	import { faSpinner } from '@fortawesome/free-solid-svg-icons'
 	import CenteredPage from '$lib/components/CenteredPage.svelte'
 	import PageHeader from '$lib/components/PageHeader.svelte'
+	import WindmillIcon from '$lib/components/icons/WindmillIcon.svelte'
 
 	let error = $page.url.searchParams.get('error')
 	let code = $page.url.searchParams.get('code') ?? undefined
@@ -33,6 +34,6 @@
 <CenteredPage>
 	<PageHeader title="Connection to slack in progress" />
 	<div class="mx-auto w-0">
-		<Icon class="animate-spin" data={faSpinner} scale={2.0} />
+		<WindmillIcon class="animate-[spin_5s_linear_infinite]" height="80px" width="80px" />
 	</div>
 </CenteredPage>
diff --git a/frontend/src/routes/user/login_callback/[client_name]@none.svelte b/frontend/src/routes/user/login_callback/[client_name]@none.svelte
index f72feeeb9d..8be5727ddd 100644
--- a/frontend/src/routes/user/login_callback/[client_name]@none.svelte
+++ b/frontend/src/routes/user/login_callback/[client_name]@none.svelte
@@ -10,6 +10,7 @@
 	import { userStore, workspaceStore } from '$lib/stores'
 	import { getUserExt } from '$lib/user'
 	import { logoutWithRedirect } from '$lib/logout'
+	import WindmillIcon from '$lib/components/icons/WindmillIcon.svelte'
 
 	let error = $page.url.searchParams.get('error')
 	let clientName = $page.params.client_name
@@ -51,6 +52,6 @@
 
 <CenteredModal title="Login from {clientName} in progress">
 	<div class="mx-auto w-0">
-		<Icon class="animate-spin" data={faSpinner} scale={2.0} />
+		<WindmillIcon class="animate-[spin_5s_linear_infinite]" height="80px" width="80px" />
 	</div>
 </CenteredModal>