diff --git a/src/lib/components/ApiConfigModal.svelte b/src/lib/components/ApiConfigModal.svelte
new file mode 100644
index 0000000..23ff598
--- /dev/null
+++ b/src/lib/components/ApiConfigModal.svelte
@@ -0,0 +1,298 @@
+<script lang="ts">
+	import type { ApiEnrichmentRule } from '$lib/types.js';
+
+	let {
+		rule,
+		headers,
+		onsave,
+		onclose
+	}: {
+		rule?: ApiEnrichmentRule;
+		headers: string[];
+		onsave: (rule: ApiEnrichmentRule) => void;
+		onclose: () => void;
+	} = $props();
+
+	// svelte-ignore state_referenced_locally — intentionally using initial values only
+	let targetKey = $state(rule?.target_key ?? '');
+	// svelte-ignore state_referenced_locally
+	let urlTemplate = $state(rule?.url_template ?? '');
+	// svelte-ignore state_referenced_locally
+	let method = $state<'GET' | 'POST'>(rule?.method ?? 'GET');
+	// svelte-ignore state_referenced_locally
+	let headerEntries = $state<{ key: string; value: string }[]>(
+		rule?.headers ? Object.entries(rule.headers).map(([key, value]) => ({ key, value })) : []
+	);
+	// svelte-ignore state_referenced_locally
+	let bodyTemplate = $state(rule?.body_template ?? '');
+	// svelte-ignore state_referenced_locally
+	let responsePath = $state(rule?.response_path ?? '');
+	// svelte-ignore state_referenced_locally
+	let fallbackValue = $state(rule?.fallback_value != null ? String(rule.fallback_value) : '');
+
+	let showUrlVars = $state(false);
+	let showBodyVars = $state(false);
+
+	let urlInput: HTMLInputElement | undefined = $state();
+	let bodyTextarea: HTMLTextAreaElement | undefined = $state();
+
+	function insertVariable(field: 'url' | 'body', header: string) {
+		const variable = `{{${header}}}`;
+		if (field === 'url') {
+			if (urlInput) {
+				const start = urlInput.selectionStart ?? urlTemplate.length;
+				urlTemplate = urlTemplate.slice(0, start) + variable + urlTemplate.slice(urlInput.selectionEnd ?? start);
+			} else {
+				urlTemplate += variable;
+			}
+			showUrlVars = false;
+		} else {
+			if (bodyTextarea) {
+				const start = bodyTextarea.selectionStart ?? bodyTemplate.length;
+				bodyTemplate = bodyTemplate.slice(0, start) + variable + bodyTemplate.slice(bodyTextarea.selectionEnd ?? start);
+			} else {
+				bodyTemplate += variable;
+			}
+			showBodyVars = false;
+		}
+	}
+
+	function addHeader() {
+		headerEntries = [...headerEntries, { key: '', value: '' }];
+	}
+
+	function removeHeader(index: number) {
+		headerEntries = headerEntries.filter((_, i) => i !== index);
+	}
+
+	function save() {
+		if (!targetKey.trim() || !urlTemplate.trim() || !responsePath.trim()) return;
+
+		const headersObj: Record<string, string> = {};
+		for (const entry of headerEntries) {
+			if (entry.key.trim()) {
+				headersObj[entry.key.trim()] = entry.value;
+			}
+		}
+
+		const newRule: ApiEnrichmentRule = {
+			type: 'api_fetch',
+			target_key: targetKey.trim(),
+			url_template: urlTemplate.trim(),
+			method,
+			response_path: responsePath.trim()
+		};
+
+		if (Object.keys(headersObj).length > 0) newRule.headers = headersObj;
+		if (method === 'POST' && bodyTemplate.trim()) newRule.body_template = bodyTemplate.trim();
+		if (fallbackValue !== '') newRule.fallback_value = fallbackValue;
+
+		onsave(newRule);
+	}
+
+	const isValid = $derived(targetKey.trim() !== '' && urlTemplate.trim() !== '' && responsePath.trim() !== '');
+</script>
+
+<!-- svelte-ignore a11y_no_static_element_interactions a11y_click_events_have_key_events -->
+<!-- svelte-ignore a11y_click_events_have_key_events -->
+<div class="fixed inset-0 z-50 flex items-center justify-center bg-black/40" onclick={onclose} role="presentation">
+	<!-- svelte-ignore a11y_no_static_element_interactions a11y_click_events_have_key_events -->
+	<!-- svelte-ignore a11y_click_events_have_key_events -->
+	<div class="max-h-[90vh] w-full max-w-lg overflow-y-auto rounded-lg bg-white p-6 shadow-xl" onclick={(e) => e.stopPropagation()}>
+		<div class="mb-4 flex items-center justify-between">
+			<h3 class="text-lg font-semibold text-gray-800">
+				{rule ? '编辑' : '添加'} API 字段
+			</h3>
+			<button onclick={onclose} aria-label="关闭" class="cursor-pointer text-gray-400 hover:text-gray-600">
+				<svg class="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+					<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
+				</svg>
+			</button>
+		</div>
+
+		<div class="space-y-4">
+			<!-- Target Key -->
+			<div>
+				<label for="api-target-key" class="mb-1 block text-sm font-medium text-gray-700">Target Key</label>
+				<input
+					id="api-target-key"
+					type="text"
+					bind:value={targetKey}
+					placeholder="user_balance"
+					class="w-full rounded-md border border-gray-300 px-3 py-2 text-sm focus:border-blue-500 focus:ring-1 focus:ring-blue-500"
+				/>
+				<p class="mt-1 text-xs text-gray-400">最终 JSON 中的字段名</p>
+			</div>
+
+			<!-- Request URL -->
+			<div>
+				<label for="api-url" class="mb-1 block text-sm font-medium text-gray-700">Request URL</label>
+				<div class="flex gap-1">
+					<input
+						id="api-url"
+						type="text"
+						bind:this={urlInput}
+						bind:value={urlTemplate}
+						placeholder={"https://api.example.com/users/{{用户ID}}/detail"}
+						class="flex-1 rounded-md border border-gray-300 px-3 py-2 text-sm focus:border-blue-500 focus:ring-1 focus:ring-blue-500"
+					/>
+					<div class="relative">
+						<button
+							onclick={() => { showUrlVars = !showUrlVars; showBodyVars = false; }}
+							class="cursor-pointer whitespace-nowrap rounded-md border border-gray-300 px-2 py-2 text-xs text-gray-600 hover:bg-gray-50"
+							title="插入变量"
+						>
+							&#123;&#123;x&#125;&#125;
+						</button>
+						{#if showUrlVars}
+							<div class="absolute right-0 z-10 mt-1 max-h-48 w-40 overflow-y-auto rounded-md border border-gray-200 bg-white py-1 shadow-lg">
+								{#each headers as h (h)}
+									<button
+										onclick={() => insertVariable('url', h)}
+										class="w-full cursor-pointer px-3 py-1.5 text-left text-xs text-gray-700 hover:bg-blue-50"
+									>
+										{h}
+									</button>
+								{/each}
+							</div>
+						{/if}
+					</div>
+				</div>
+				<p class="mt-1 text-xs text-gray-400">支持 &#123;&#123;列名&#125;&#125; 模板变量</p>
+			</div>
+
+			<!-- Request Method -->
+			<div>
+				<label for="api-method" class="mb-1 block text-sm font-medium text-gray-700">Request Method</label>
+				<select
+					id="api-method"
+					bind:value={method}
+					class="w-full rounded-md border border-gray-300 px-3 py-2 text-sm focus:border-blue-500 focus:ring-1 focus:ring-blue-500"
+				>
+					<option value="GET">GET</option>
+					<option value="POST">POST</option>
+				</select>
+			</div>
+
+			<!-- Headers -->
+			<div>
+				<div class="mb-1 flex items-center justify-between">
+					<span class="text-sm font-medium text-gray-700">Headers</span>
+					<button onclick={addHeader} class="cursor-pointer text-xs text-blue-600 hover:text-blue-700">
+						+ 添加
+					</button>
+				</div>
+				{#if headerEntries.length > 0}
+					<div class="space-y-2">
+						{#each headerEntries as entry, i (i)}
+							<div class="flex items-center gap-1">
+								<input
+									type="text"
+									bind:value={entry.key}
+									placeholder="Key"
+									class="flex-1 rounded border border-gray-300 px-2 py-1.5 text-xs focus:border-blue-500 focus:ring-1 focus:ring-blue-500"
+								/>
+								<input
+									type="text"
+									bind:value={entry.value}
+									placeholder="Value"
+									class="flex-1 rounded border border-gray-300 px-2 py-1.5 text-xs focus:border-blue-500 focus:ring-1 focus:ring-blue-500"
+								/>
+								<button
+									onclick={() => removeHeader(i)}
+									class="cursor-pointer flex-shrink-0 text-gray-400 hover:text-red-500"
+									aria-label="删除此 Header"
+								>
+									<svg class="h-4 w-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+										<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
+									</svg>
+								</button>
+							</div>
+						{/each}
+					</div>
+				{:else}
+					<p class="text-xs text-gray-400">暂无 Header</p>
+				{/if}
+			</div>
+
+			<!-- Body (POST only) -->
+			{#if method === 'POST'}
+				<div>
+					<div class="mb-1 flex items-center justify-between">
+						<label for="api-body" class="text-sm font-medium text-gray-700">Request Body</label>
+						<div class="relative">
+							<button
+								onclick={() => { showBodyVars = !showBodyVars; showUrlVars = false; }}
+								class="cursor-pointer text-xs text-blue-600 hover:text-blue-700"
+							>
+								插入变量
+							</button>
+							{#if showBodyVars}
+								<div class="absolute right-0 z-10 mt-1 max-h-48 w-40 overflow-y-auto rounded-md border border-gray-200 bg-white py-1 shadow-lg">
+									{#each headers as h (h)}
+										<button
+											onclick={() => insertVariable('body', h)}
+											class="w-full cursor-pointer px-3 py-1.5 text-left text-xs text-gray-700 hover:bg-blue-50"
+										>
+											{h}
+										</button>
+									{/each}
+								</div>
+							{/if}
+						</div>
+					</div>
+					<textarea
+						id="api-body"
+						bind:this={bodyTextarea}
+						bind:value={bodyTemplate}
+						rows="4"
+						placeholder={'{"user_id": "{{用户ID}}"}'}
+						class="w-full rounded-md border border-gray-300 px-3 py-2 font-mono text-xs focus:border-blue-500 focus:ring-1 focus:ring-blue-500"
+					></textarea>
+				</div>
+			{/if}
+
+			<!-- Response Path -->
+			<div>
+				<label for="api-response-path" class="mb-1 block text-sm font-medium text-gray-700">Response Extractor</label>
+				<input
+					id="api-response-path"
+					type="text"
+					bind:value={responsePath}
+					placeholder="data.balance"
+					class="w-full rounded-md border border-gray-300 px-3 py-2 text-sm focus:border-blue-500 focus:ring-1 focus:ring-blue-500"
+				/>
+				<p class="mt-1 text-xs text-gray-400">从接口返回 JSON 中提取值的路径（如 data.result.value）</p>
+			</div>
+
+			<!-- Fallback Value -->
+			<div>
+				<label for="api-fallback" class="mb-1 block text-sm font-medium text-gray-700">Fallback Value</label>
+				<input
+					id="api-fallback"
+					type="text"
+					bind:value={fallbackValue}
+					placeholder="null"
+					class="w-full rounded-md border border-gray-300 px-3 py-2 text-sm focus:border-blue-500 focus:ring-1 focus:ring-blue-500"
+				/>
+				<p class="mt-1 text-xs text-gray-400">API 请求失败时的默认值</p>
+			</div>
+		</div>
+
+		<div class="mt-6 flex justify-end gap-2">
+			<button
+				onclick={onclose}
+				class="cursor-pointer rounded-md border border-gray-300 px-4 py-2 text-sm text-gray-700 hover:bg-gray-50"
+			>
+				取消
+			</button>
+			<button
+				onclick={save}
+				disabled={!isValid}
+				class="cursor-pointer rounded-md bg-blue-600 px-4 py-2 text-sm font-medium text-white hover:bg-blue-700 disabled:cursor-not-allowed disabled:opacity-50"
+			>
+				保存
+			</button>
+		</div>
+	</div>
+</div>
diff --git a/src/lib/components/ExcelTable.svelte b/src/lib/components/ExcelTable.svelte
index 67c675d..2747e39 100644
--- a/src/lib/components/ExcelTable.svelte
+++ b/src/lib/components/ExcelTable.svelte
@@ -1,15 +1,23 @@
 <script lang="ts">
-	import type { MappingConfig, RowData } from '$lib/types.js';
+	import type { MappingConfig, RowData, ApiEnrichmentRule } from '$lib/types.js';
 	import ColumnConfig from './ColumnConfig.svelte';
 
 	let {
 		headers,
 		rows,
-		mappings = $bindable()
+		mappings = $bindable(),
+		enrichmentRules = [],
+		onaddapi,
+		oneditapi,
+		ondeleteapi
 	}: {
 		headers: string[];
 		rows: RowData[];
 		mappings: MappingConfig[];
+		enrichmentRules?: ApiEnrichmentRule[];
+		onaddapi?: () => void;
+		oneditapi?: (index: number) => void;
+		ondeleteapi?: (index: number) => void;
 	} = $props();
 
 	let activeConfigIndex = $state<number | null>(null);
@@ -37,17 +45,68 @@
 
 <div class="flex h-full flex-col overflow-hidden">
 	<div class="flex-shrink-0 border-b border-gray-200 bg-gray-50 px-4 py-2">
-		<h3 class="text-sm font-semibold text-gray-700">
-			Excel 数据
-			<span class="ml-2 text-xs font-normal text-gray-400">
-				{rows.length} 行 × {headers.length} 列
-				{#if rows.length > maxPreviewRows}
-					（显示前 {maxPreviewRows} 行）
-				{/if}
-			</span>
-		</h3>
+		<div class="flex items-center justify-between">
+			<h3 class="text-sm font-semibold text-gray-700">
+				Excel 数据
+				<span class="ml-2 text-xs font-normal text-gray-400">
+					{rows.length} 行 × {headers.length} 列
+					{#if enrichmentRules.length > 0}
+						+ {enrichmentRules.length} API 字段
+					{/if}
+					{#if rows.length > maxPreviewRows}
+						（显示前 {maxPreviewRows} 行）
+					{/if}
+				</span>
+			</h3>
+			{#if onaddapi}
+				<button
+					onclick={onaddapi}
+					class="inline-flex cursor-pointer items-center gap-1 rounded-md bg-purple-50 px-2 py-1 text-xs font-medium text-purple-700 hover:bg-purple-100"
+				>
+					<svg class="h-3.5 w-3.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+						<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 4v16m8-8H4" />
+					</svg>
+					添加 API 字段
+				</button>
+			{/if}
+		</div>
 	</div>
 
+	<!-- Enrichment rules bar -->
+	{#if enrichmentRules.length > 0}
+		<div class="flex flex-shrink-0 flex-wrap items-center gap-2 border-b border-gray-200 bg-purple-50/50 px-4 py-2">
+			<span class="text-xs font-medium text-purple-600">API 字段:</span>
+			{#each enrichmentRules as rule, i (i)}
+				<span class="inline-flex items-center gap-1 rounded-full bg-purple-100 px-2.5 py-0.5 text-xs font-medium text-purple-700">
+					{rule.target_key}
+					<span class="text-purple-400">({rule.method})</span>
+					{#if oneditapi}
+						<button
+							onclick={() => oneditapi?.(i)}
+							class="cursor-pointer text-purple-400 hover:text-purple-600"
+							title="编辑"
+						>
+							<svg class="h-3 w-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+								<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z" />
+							</svg>
+						</button>
+					{/if}
+					{#if ondeleteapi}
+						<button
+							onclick={() => ondeleteapi?.(i)}
+							class="cursor-pointer text-purple-400 hover:text-red-500"
+							title="删除"
+						>
+							<svg class="h-3 w-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+								<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
+							</svg>
+						</button>
+					{/if}
+				</span>
+			{/each}
+		</div>
+	{/if}
+
 	<div class="flex-1 overflow-auto">
 		<table class="w-full text-sm">
 			<thead class="sticky top-0 z-10 bg-gray-50">
@@ -76,6 +135,17 @@
 							{/if}
 						</th>
 					{/each}
+					<!-- API enrichment columns (virtual) -->
+					{#each enrichmentRules as rule (rule.target_key)}
+						<th class="border-b border-r border-purple-200 bg-purple-50 px-3 py-2 text-left font-medium text-purple-600">
+							<div class="flex items-center gap-1">
+								<svg class="h-3 w-3 flex-shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+									<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13 10V3L4 14h7v7l9-11h-7z" />
+								</svg>
+								<span class="truncate" title="{rule.target_key} (API)">{rule.target_key}</span>
+							</div>
+						</th>
+					{/each}
 				</tr>
 			</thead>
 			<tbody>
@@ -86,6 +156,12 @@
 								<span class="block max-w-[200px] truncate">{displayValue(row[header])}</span>
 							</td>
 						{/each}
+						<!-- API placeholder cells -->
+						{#each enrichmentRules as _ (_.target_key)}
+							<td class="border-b border-r border-purple-100 bg-purple-50/30 px-3 py-1.5 text-xs italic text-purple-400">
+								[Pending API Fetch]
+							</td>
+						{/each}
 					</tr>
 				{/each}
 			</tbody>
diff --git a/src/lib/components/SubmissionSettings.svelte b/src/lib/components/SubmissionSettings.svelte
new file mode 100644
index 0000000..fe28d02
--- /dev/null
+++ b/src/lib/components/SubmissionSettings.svelte
@@ -0,0 +1,88 @@
+<script lang="ts">
+	import type { SubmissionConfig } from '$lib/types.js';
+
+	let {
+		config = $bindable(),
+		onclose
+	}: {
+		config: SubmissionConfig;
+		onclose: () => void;
+	} = $props();
+
+	let localConfig = $state<SubmissionConfig>({ ...config });
+
+	function save() {
+		config.target_url = localConfig.target_url;
+		config.method = localConfig.method;
+		config.batch_size = localConfig.batch_size;
+		onclose();
+	}
+</script>
+
+<!-- svelte-ignore a11y_no_static_element_interactions a11y_click_events_have_key_events -->
+<!-- svelte-ignore a11y_click_events_have_key_events -->
+<div class="fixed inset-0 z-50 flex items-center justify-center bg-black/40" onclick={onclose} role="presentation">
+	<!-- svelte-ignore a11y_no_static_element_interactions a11y_click_events_have_key_events -->
+	<!-- svelte-ignore a11y_click_events_have_key_events -->
+	<div class="w-full max-w-md rounded-lg bg-white p-6 shadow-xl" onclick={(e) => e.stopPropagation()}>
+		<div class="mb-4 flex items-center justify-between">
+			<h3 class="text-lg font-semibold text-gray-800">提交设置</h3>
+			<button onclick={onclose} aria-label="关闭" class="cursor-pointer text-gray-400 hover:text-gray-600">
+				<svg class="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+					<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
+				</svg>
+			</button>
+		</div>
+
+		<div class="space-y-4">
+			<div>
+				<label for="target-url" class="mb-1 block text-sm font-medium text-gray-700">Target URL</label>
+				<input
+					id="target-url"
+					type="text"
+					bind:value={localConfig.target_url}
+					placeholder="https://api.db.com/bulk-insert"
+					class="w-full rounded-md border border-gray-300 px-3 py-2 text-sm focus:border-blue-500 focus:ring-1 focus:ring-blue-500"
+				/>
+			</div>
+
+			<div>
+				<label for="method" class="mb-1 block text-sm font-medium text-gray-700">Method</label>
+				<select
+					id="method"
+					bind:value={localConfig.method}
+					class="w-full rounded-md border border-gray-300 px-3 py-2 text-sm focus:border-blue-500 focus:ring-1 focus:ring-blue-500"
+				>
+					<option value="POST">POST</option>
+					<option value="PUT">PUT</option>
+				</select>
+			</div>
+
+			<div>
+				<label for="batch-size" class="mb-1 block text-sm font-medium text-gray-700">Batch Size</label>
+				<input
+					id="batch-size"
+					type="number"
+					bind:value={localConfig.batch_size}
+					min="1"
+					class="w-full rounded-md border border-gray-300 px-3 py-2 text-sm focus:border-blue-500 focus:ring-1 focus:ring-blue-500"
+				/>
+			</div>
+		</div>
+
+		<div class="mt-6 flex justify-end gap-2">
+			<button
+				onclick={onclose}
+				class="cursor-pointer rounded-md border border-gray-300 px-4 py-2 text-sm text-gray-700 hover:bg-gray-50"
+			>
+				取消
+			</button>
+			<button
+				onclick={save}
+				class="cursor-pointer rounded-md bg-blue-600 px-4 py-2 text-sm font-medium text-white hover:bg-blue-700"
+			>
+				保存
+			</button>
+		</div>
+	</div>
+</div>
diff --git a/src/lib/converter.ts b/src/lib/converter.ts
index 03c38ab..04b3270 100644
--- a/src/lib/converter.ts
+++ b/src/lib/converter.ts
@@ -1,5 +1,14 @@
 import dayjs from 'dayjs';
-import type { MappingConfig, RowData, DataType, MappingTemplate } from './types.js';
+import type {
+	MappingConfig,
+	RowData,
+	DataType,
+	MappingTemplate,
+	ApiEnrichmentRule,
+	SubmissionConfig,
+	StaticRule,
+	JobBundle
+} from './types.js';
 
 /**
  * Check if a value is considered empty.
@@ -195,3 +204,47 @@ export function exportTemplate(mappings: MappingConfig[]): MappingTemplate {
 		return entry;
 	});
 }
+
+/**
+ * Convert enabled MappingConfigs to StaticRule format for Job Bundle.
+ */
+function toStaticRules(mappings: MappingConfig[]): StaticRule[] {
+	return mappings
+		.filter((m) => m.enabled)
+		.map((m) => {
+			const rule: StaticRule = {
+				type: 'static',
+				source: m.source,
+				target: m.target,
+				dataType: m.type
+			};
+			if (m.type === 'date' && m.format) rule.format = m.format;
+			return rule;
+		});
+}
+
+/**
+ * Generate a complete Job Bundle for export.
+ */
+export function generateJobBundle(
+	rows: RowData[],
+	mappings: MappingConfig[],
+	enrichmentRules: ApiEnrichmentRule[],
+	submissionConfig: SubmissionConfig
+): JobBundle {
+	const sourceData = convertData(rows, mappings);
+	const staticRules = toStaticRules(mappings);
+
+	return {
+		meta: {
+			version: '1.0.0',
+			generated_at: new Date().toISOString()
+		},
+		config: {
+			static_rules: staticRules,
+			enrichment_rules: enrichmentRules,
+			submission: submissionConfig
+		},
+		source_data: sourceData
+	};
+}
diff --git a/src/lib/types.ts b/src/lib/types.ts
index a315b25..b404ead 100644
--- a/src/lib/types.ts
+++ b/src/lib/types.ts
@@ -33,3 +33,45 @@ export type MappingTemplate = Pick<
 	MappingConfig,
 	'source' | 'target' | 'type' | 'format' | 'excludeIfEmpty' | 'defaultValue'
 >[];
+
+/** Static mapping rule in Job Bundle output */
+export interface StaticRule {
+	type: 'static';
+	source: string;
+	target: string;
+	dataType: DataType;
+	format?: string;
+}
+
+/** Dynamic API enrichment rule */
+export interface ApiEnrichmentRule {
+	type: 'api_fetch';
+	target_key: string;
+	url_template: string;
+	method: 'GET' | 'POST';
+	headers?: Record<string, string>;
+	body_template?: string;
+	response_path: string;
+	fallback_value?: unknown;
+}
+
+/** Submission configuration for final data push */
+export interface SubmissionConfig {
+	target_url: string;
+	method: 'POST' | 'PUT';
+	batch_size: number;
+}
+
+/** Final exported Job Bundle structure */
+export interface JobBundle {
+	meta: {
+		version: string;
+		generated_at: string;
+	};
+	config: {
+		static_rules: StaticRule[];
+		enrichment_rules: ApiEnrichmentRule[];
+		submission: SubmissionConfig;
+	};
+	source_data: Record<string, unknown>[];
+}
diff --git a/src/routes/+page.svelte b/src/routes/+page.svelte
index 83a84b9..4cd76cb 100644
--- a/src/routes/+page.svelte
+++ b/src/routes/+page.svelte
@@ -1,9 +1,11 @@
 <script lang="ts">
-	import type { MappingConfig, RowData, MappingTemplate } from '$lib/types.js';
+	import type { MappingConfig, RowData, MappingTemplate, ApiEnrichmentRule, SubmissionConfig } from '$lib/types.js';
 	import { parseExcelFile } from '$lib/excel.js';
-	import { convertData, createDefaultMappings, applyTemplate, exportTemplate } from '$lib/converter.js';
+	import { convertData, createDefaultMappings, applyTemplate, exportTemplate, generateJobBundle } from '$lib/converter.js';
 	import ExcelTable from '$lib/components/ExcelTable.svelte';
 	import JsonPreview from '$lib/components/JsonPreview.svelte';
+	import ApiConfigModal from '$lib/components/ApiConfigModal.svelte';
+	import SubmissionSettings from '$lib/components/SubmissionSettings.svelte';
 
 	// State
 	let headers = $state<string[]>([]);
@@ -14,6 +16,17 @@
 	let isDragOver = $state(false);
 	let copySuccess = $state(false);
 
+	// ETL state
+	let enrichmentRules = $state<ApiEnrichmentRule[]>([]);
+	let submissionConfig = $state<SubmissionConfig>({
+		target_url: '',
+		method: 'POST',
+		batch_size: 50
+	});
+	let showApiConfig = $state(false);
+	let showSubmissionSettings = $state(false);
+	let editingRuleIndex = $state<number | null>(null);
+
 	// Split panel
 	let splitPercent = $state(50);
 	let jsonCollapsed = $state(false);
@@ -50,28 +63,41 @@
 	let debounceTimer: ReturnType<typeof setTimeout>;
 
 	$effect(() => {
-		// $state.snapshot forces deep read of all nested properties,
-		// so changes to e.g. mappings[i].target will trigger this effect
 		const snapshotMappings = $state.snapshot(mappings);
+		const snapshotRules = $state.snapshot(enrichmentRules);
 		const currentRows = rows;
 		const dataReady = hasData;
 
 		clearTimeout(debounceTimer);
 		debounceTimer = setTimeout(() => {
-			convertedJson = dataReady ? convertData(currentRows, snapshotMappings) : [];
+			if (dataReady) {
+				const base = convertData(currentRows, snapshotMappings);
+				// Add API placeholders for preview
+				if (snapshotRules.length > 0) {
+					convertedJson = base.map((row) => {
+						const enriched = { ...row };
+						for (const rule of snapshotRules) {
+							enriched[rule.target_key] = '[Pending API Fetch]';
+						}
+						return enriched;
+					});
+				} else {
+					convertedJson = base;
+				}
+			} else {
+				convertedJson = [];
+			}
 		}, 150);
 	});
 
-	// Manual JSON editing — overrides converted output until next mapping/data change
+	// Manual JSON editing
 	let manualJson = $state<string | null>(null);
-
 	const jsonString = $derived(manualJson ?? JSON.stringify(convertedJson, null, 2));
 
 	function onJsonEdited(edited: string) {
 		manualJson = edited;
 	}
 
-	// Clear manual override when conversion changes
 	$effect(() => {
 		convertedJson;
 		manualJson = null;
@@ -179,6 +205,43 @@
 			errorMessage = '复制失败，请手动复制';
 		}
 	}
+
+	// Job Bundle export
+	function handleExportJobBundle() {
+		const bundle = generateJobBundle(rows, mappings, enrichmentRules, submissionConfig);
+		const blob = new Blob([JSON.stringify(bundle, null, 2)], { type: 'application/json' });
+		const url = URL.createObjectURL(blob);
+		const a = document.createElement('a');
+		a.href = url;
+		a.download = fileName ? fileName.replace(/\.[^.]+$/, '_job_bundle.json') : 'job_bundle.json';
+		a.click();
+		URL.revokeObjectURL(url);
+	}
+
+	// API enrichment rules management
+	function openAddApiConfig() {
+		editingRuleIndex = null;
+		showApiConfig = true;
+	}
+
+	function openEditApiConfig(index: number) {
+		editingRuleIndex = index;
+		showApiConfig = true;
+	}
+
+	function deleteApiRule(index: number) {
+		enrichmentRules = enrichmentRules.filter((_, i) => i !== index);
+	}
+
+	function handleSaveApiRule(rule: ApiEnrichmentRule) {
+		if (editingRuleIndex !== null) {
+			enrichmentRules = enrichmentRules.map((r, i) => (i === editingRuleIndex ? rule : r));
+		} else {
+			enrichmentRules = [...enrichmentRules, rule];
+		}
+		showApiConfig = false;
+		editingRuleIndex = null;
+	}
 </script>
 
 <div
@@ -231,8 +294,37 @@
 			导出配置
 		</button>
 
+		<div class="mx-2 h-6 w-px bg-gray-200"></div>
+
+		<!-- Submission Settings -->
+		<button
+			onclick={() => (showSubmissionSettings = true)}
+			disabled={!hasData}
+			class="inline-flex items-center gap-1 rounded-md border border-gray-300 bg-white px-3 py-1.5 text-sm text-gray-700 hover:bg-gray-50 disabled:cursor-not-allowed disabled:opacity-50 cursor-pointer"
+		>
+			<svg class="h-4 w-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+				<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M10.325 4.317c.426-1.756 2.924-1.756 3.35 0a1.724 1.724 0 002.573 1.066c1.543-.94 3.31.826 2.37 2.37a1.724 1.724 0 001.066 2.573c1.756.426 1.756 2.924 0 3.35a1.724 1.724 0 00-1.066 2.573c.94 1.543-.826 3.31-2.37 2.37a1.724 1.724 0 00-2.573 1.066c-.426 1.756-2.924 1.756-3.35 0a1.724 1.724 0 00-2.573-1.066c-1.543.94-3.31-.826-2.37-2.37a1.724 1.724 0 00-1.066-2.573c-1.756-.426-1.756-2.924 0-3.35a1.724 1.724 0 001.066-2.573c-.94-1.543.826-3.31 2.37-2.37.996.608 2.296.07 2.572-1.065z" />
+				<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 12a3 3 0 11-6 0 3 3 0 016 0z" />
+			</svg>
+			提交设置
+		</button>
+
 		<div class="flex-1"></div>
 
+		<!-- Export Job Bundle -->
+		<button
+			onclick={handleExportJobBundle}
+			disabled={!hasData}
+			class="inline-flex items-center gap-1 rounded-md bg-emerald-600 px-3 py-1.5 text-sm font-medium text-white hover:bg-emerald-700 disabled:cursor-not-allowed disabled:opacity-50 cursor-pointer"
+		>
+			<svg class="h-4 w-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+				<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M20 7l-8-4-8 4m16 0l-8 4m8-4v10l-8 4m0-10L4 7m8 4v10M4 7v10l8 4" />
+			</svg>
+			导出任务包
+		</button>
+
+		<div class="mx-1 h-6 w-px bg-gray-200"></div>
+
 		<!-- JSON operations -->
 		<button
 			onclick={handleDownloadJson}
@@ -302,7 +394,15 @@
 		>
 			<!-- Left: Excel Table -->
 			<div class="overflow-hidden" style="width: {jsonCollapsed ? '100%' : `${splitPercent}%`}">
-				<ExcelTable {headers} {rows} bind:mappings />
+				<ExcelTable
+					{headers}
+					{rows}
+					bind:mappings
+					{enrichmentRules}
+					onaddapi={openAddApiConfig}
+					oneditapi={openEditApiConfig}
+					ondeleteapi={deleteApiRule}
+				/>
 			</div>
 
 			{#if !jsonCollapsed}
@@ -369,3 +469,20 @@
 		</div>
 	{/if}
 </div>
+
+<!-- Modals -->
+{#if showApiConfig}
+	<ApiConfigModal
+		rule={editingRuleIndex !== null ? enrichmentRules[editingRuleIndex] : undefined}
+		{headers}
+		onsave={handleSaveApiRule}
+		onclose={() => { showApiConfig = false; editingRuleIndex = null; }}
+	/>
+{/if}
+
+{#if showSubmissionSettings}
+	<SubmissionSettings
+		bind:config={submissionConfig}
+		onclose={() => (showSubmissionSettings = false)}
+	/>
+{/if}