diff --git a/packages/chronicle/src/components/api/playground-dialog.tsx b/packages/chronicle/src/components/api/playground-dialog.tsx
index ce54c56..29b1de9 100644
--- a/packages/chronicle/src/components/api/playground-dialog.tsx
+++ b/packages/chronicle/src/components/api/playground-dialog.tsx
@@ -2,10 +2,11 @@
 
 import { useState, useCallback, useMemo, useEffect } from 'react'
 import type { OpenAPIV3 } from 'openapi-types'
-import { Dialog, Button, Badge, IconButton, Input, CopyButton, Select, Menu } from '@raystack/apsara'
+import { Dialog, Button, Badge, IconButton, Input, CopyButton, Select, Menu, Switch } from '@raystack/apsara'
 import { ChevronDownIcon, ChevronUpIcon, CodeIcon, HistoryIcon, PlayIcon, PlusIcon, XIcon } from '@/components/ui/icons';
 import { MethodBadge } from '@/components/api/method-badge'
-import { flattenSchema, generateExampleJson, toKind, type SchemaField } from '@/lib/schema'
+import { flattenSchema, generateExampleJson, toKind, type SchemaField, type SchemaFieldKind } from '@/lib/schema'
+import { arrayItemKind, coerceValue, initBodyValues, pruneBody } from '@/lib/playground-body'
 import { generateCurl } from '@/lib/snippet-generators'
 import { isStaticMode } from '@/lib/static-mode'
 import { JsonEditor } from '@/components/api/json-editor'
@@ -143,16 +144,7 @@ export function PlaygroundDialog({
   const [pathValues, setPathValues] = useState<Record<string, string>>({})
   const [queryValues, setQueryValues] = useState<Record<string, string>>({})
   const [jsonMode, setJsonMode] = useState(false)
-  const [bodyValues, setBodyValues] = useState<Record<string, unknown>>(() => {
-    if (!body) return {}
-    const init: Record<string, unknown> = {}
-    for (const f of body.fields) {
-      if (f.kind === 'array') init[f.name] = []
-      else if (f.kind === 'object' || f.children) init[f.name] = {}
-      else init[f.name] = ''
-    }
-    return init
-  })
+  const [bodyValues, setBodyValues] = useState<Record<string, unknown>>(() => body ? initBodyValues(body.fields) : {})
   const [bodyJsonStr, setBodyJsonStr] = useState(() => body ? body.jsonExample : '{}')
 
   useEffect(() => {
@@ -200,16 +192,7 @@ export function PlaygroundDialog({
     setHeaderValues({})
     setPathValues({})
     setQueryValues({})
-    setBodyValues(() => {
-      if (!body) return {}
-      const init: Record<string, unknown> = {}
-      for (const f of body.fields) {
-        if (f.kind === 'array') init[f.name] = []
-        else if (f.kind === 'object' || f.children) init[f.name] = {}
-        else init[f.name] = ''
-      }
-      return init
-    })
+    setBodyValues(body ? initBodyValues(body.fields) : {})
     setResponseData(null)
   }
 
@@ -244,7 +227,7 @@ export function PlaygroundDialog({
           return
         }
       } else {
-        reqBody = bodyValues
+        reqBody = pruneBody(bodyValues)
       }
     }
 
@@ -260,7 +243,7 @@ export function PlaygroundDialog({
     } finally {
       setLoading(false)
     }
-  }, [specName, method, path, serverUrl, pathValues, queryValues, getAuthHeaders, headerValues, bodyValues, body])
+  }, [specName, method, path, serverUrl, pathValues, queryValues, getAuthHeaders, headerValues, bodyValues, bodyJsonStr, jsonMode, body])
 
   const responseJson = responseData
     ? (typeof responseData.body === 'string' ? responseData.body : JSON.stringify(responseData.body, null, 2))
@@ -275,7 +258,7 @@ export function PlaygroundDialog({
   const curlSnippet = useMemo(() => {
     const headers: Record<string, string> = { ...getAuthHeaders(), ...headerValues }
     if (body) headers['Content-Type'] = body.contentType ?? 'application/json'
-    const bodyStr = body ? (jsonMode ? bodyJsonStr : JSON.stringify(bodyValues)) : undefined
+    const bodyStr = body ? (jsonMode ? bodyJsonStr : JSON.stringify(pruneBody(bodyValues))) : undefined
     return generateCurl({ method, url: serverUrl + path, headers, body: bodyStr })
   }, [method, path, serverUrl, getAuthHeaders, headerValues, bodyValues, bodyJsonStr, jsonMode, body])
 
@@ -428,7 +411,7 @@ export function PlaygroundDialog({
                     <div style={{ display: 'flex', alignItems: 'center', gap: 'var(--rs-space-3)' }}>
                       <IconButton size={2} onClick={() => {
                         if (!jsonMode) {
-                          setBodyJsonStr(JSON.stringify(bodyValues, null, 2))
+                          setBodyJsonStr(JSON.stringify(pruneBody(bodyValues), null, 2))
                         } else {
                           try { setBodyValues(JSON.parse(bodyJsonStr)) } catch { /* ignore */ }
                         }
@@ -561,23 +544,24 @@ function BodyFieldRow({ field, value, onChange }: {
   const hasChildren = field.children && field.children.length > 0
 
   if (field.kind === 'array' && !hasChildren) {
-    const items = Array.isArray(value) ? value as string[] : []
+    const items = Array.isArray(value) ? value : []
+    const itemKind = arrayItemKind(field)
     return (
       <div className={styles.arrayField}>
         <div className={styles.fieldRow}>
           <span className={styles.fieldLabel}>{field.name} {field.required && <Badge variant="danger" size="micro">required</Badge>}</span>
-          <IconButton size={2} onClick={() => onChange([...items, ''])} aria-label="Add item">
+          <IconButton size={2} onClick={() => onChange([...items, itemKind === 'boolean' ? false : ''])} aria-label="Add item">
             <PlusIcon />
           </IconButton>
         </div>
         {items.map((item, i) => (
           <div key={i} className={styles.arrayItemRow}>
             <div className={styles.fieldInput}>
-              <Input
-                size="small"
+              <ScalarInput
+                kind={itemKind}
                 placeholder={`${field.name}[${i}]`}
-                value={String(item)}
-                onValueChange={(v) => {
+                value={item}
+                onChange={(v) => {
                   const updated = [...items]
                   updated[i] = v
                   onChange(updated)
@@ -618,17 +602,47 @@ function BodyFieldRow({ field, value, onChange }: {
     <div className={styles.fieldRow}>
       <span className={styles.fieldLabel}>{field.name} {field.required && <Badge variant="danger" size="micro">required</Badge>}</span>
       <div className={styles.fieldInput}>
-        <Input
-          size="small"
+        <ScalarInput
+          kind={field.kind}
           placeholder={field.description ?? 'Enter value'}
-          value={String(value ?? '')}
-          onValueChange={(v) => onChange(v)}
+          value={value}
+          onChange={onChange}
         />
       </div>
     </div>
   )
 }
 
+function ScalarInput({ kind, placeholder, value, onChange }: {
+  kind: SchemaFieldKind
+  placeholder: string
+  value: unknown
+  onChange: (val: unknown) => void
+}) {
+  const [text, setText] = useState(() => String(value ?? ''))
+
+  useEffect(() => {
+    if (coerceValue(kind, text) !== value) setText(String(value ?? ''))
+  }, [kind, value, text])
+
+  if (kind === 'boolean') {
+    return <Switch size="small" checked={value === true} onCheckedChange={(checked) => onChange(checked)} />
+  }
+
+  return (
+    <Input
+      size="small"
+      type={kind === 'number' || kind === 'integer' ? 'number' : undefined}
+      placeholder={placeholder}
+      value={text}
+      onValueChange={(v) => {
+        setText(v)
+        onChange(coerceValue(kind, v))
+      }}
+    />
+  )
+}
+
 function paramsToFields(params: OpenAPIV3.ParameterObject[]): SchemaField[] {
   return params.map((p) => {
     const schema = (p.schema ?? {}) as OpenAPIV3.SchemaObject
diff --git a/packages/chronicle/src/lib/playground-body.test.ts b/packages/chronicle/src/lib/playground-body.test.ts
new file mode 100644
index 0000000..61e1167
--- /dev/null
+++ b/packages/chronicle/src/lib/playground-body.test.ts
@@ -0,0 +1,120 @@
+import { describe, expect, test } from 'bun:test';
+import { arrayItemKind, coerceValue, initBodyValues, pruneBody } from './playground-body';
+import { flattenSchema, type SchemaField } from './schema';
+
+function field(partial: Partial<SchemaField> & Pick<SchemaField, 'name' | 'kind'>): SchemaField {
+  return { type: partial.kind, required: false, ...partial };
+}
+
+describe('coerceValue', () => {
+  test('converts boolean text to a boolean', () => {
+    expect(coerceValue('boolean', 'true')).toBe(true);
+    expect(coerceValue('boolean', 'false')).toBe(false);
+  });
+
+  test('converts number text to a number', () => {
+    expect(coerceValue('number', '1.5')).toBe(1.5);
+    expect(coerceValue('number', '-3')).toBe(-3);
+    expect(coerceValue('number', '0')).toBe(0);
+  });
+
+  test('converts integer text to an integer', () => {
+    expect(coerceValue('integer', '42')).toBe(42);
+    expect(coerceValue('integer', '0')).toBe(0);
+  });
+
+  test('keeps the raw text when the value is not a valid number', () => {
+    expect(coerceValue('number', 'abc')).toBe('abc');
+    expect(coerceValue('integer', '1.5')).toBe('1.5');
+  });
+
+  test('keeps the raw text when the number cannot be represented', () => {
+    expect(coerceValue('number', '1e309')).toBe('1e309');
+    expect(coerceValue('integer', '9007199254740993')).toBe('9007199254740993');
+  });
+
+  test('keeps empty number text as empty', () => {
+    expect(coerceValue('number', '')).toBe('');
+    expect(coerceValue('integer', '  ')).toBe('');
+  });
+
+  test('keeps strings as strings', () => {
+    expect(coerceValue('string', 'true')).toBe('true');
+    expect(coerceValue('string', '42')).toBe('42');
+  });
+});
+
+describe('arrayItemKind', () => {
+  test('reads the item kind from the array type', () => {
+    expect(arrayItemKind(field({ name: 'a', kind: 'array', type: 'boolean[]' }))).toBe('boolean');
+    expect(arrayItemKind(field({ name: 'a', kind: 'array', type: 'integer(int64)[]' }))).toBe('integer');
+    expect(arrayItemKind(field({ name: 'a', kind: 'array', type: 'string[]' }))).toBe('string');
+  });
+});
+
+describe('initBodyValues', () => {
+  test('sets booleans to false, arrays to [], objects to {}, and leaves other scalars unset', () => {
+    const fields = flattenSchema({
+      type: 'object',
+      properties: {
+        active: { type: 'boolean' },
+        tags: { type: 'array', items: { type: 'string' } },
+        meta: { type: 'object', properties: { note: { type: 'string' } } },
+        name: { type: 'string' },
+        count: { type: 'integer' },
+      },
+    });
+    expect(initBodyValues(fields)).toEqual({ active: false, tags: [], meta: {} });
+  });
+
+  test('uses the schema default when one is given', () => {
+    const fields = flattenSchema({
+      type: 'object',
+      properties: {
+        active: { type: 'boolean', default: true },
+        count: { type: 'integer', default: 10 },
+      },
+    });
+    expect(initBodyValues(fields)).toEqual({ active: true, count: 10 });
+  });
+
+  test('sets nested object children, including booleans and defaults', () => {
+    const fields = flattenSchema({
+      type: 'object',
+      properties: {
+        settings: {
+          type: 'object',
+          properties: {
+            enabled: { type: 'boolean' },
+            limit: { type: 'integer', default: 5 },
+            label: { type: 'string' },
+          },
+        },
+      },
+    });
+    expect(initBodyValues(fields)).toEqual({ settings: { enabled: false, limit: 5 } });
+  });
+});
+
+describe('pruneBody', () => {
+  test('removes unset and empty values', () => {
+    expect(pruneBody({ a: undefined, b: '', c: [], d: {} })).toEqual({});
+  });
+
+  test('keeps false and 0', () => {
+    expect(pruneBody({ active: false, count: 0 })).toEqual({ active: false, count: 0 });
+  });
+
+  test('removes nested empty values and empty parents', () => {
+    expect(pruneBody({ meta: { note: '', inner: { x: undefined } }, name: 'n' })).toEqual({ name: 'n' });
+  });
+
+  test('removes empty array items but keeps typed items', () => {
+    expect(pruneBody({ flags: [true, '', false], ids: [1, 0] })).toEqual({ flags: [true, false], ids: [1, 0] });
+  });
+
+  test('does not send null for unset fields', () => {
+    const result = pruneBody({ name: undefined, count: '' }) as Record<string, unknown>;
+    expect(JSON.stringify(result)).toBe('{}');
+  });
+});
diff --git a/packages/chronicle/src/lib/playground-body.ts b/packages/chronicle/src/lib/playground-body.ts
new file mode 100644
index 0000000..b132556
--- /dev/null
+++ b/packages/chronicle/src/lib/playground-body.ts
@@ -0,0 +1,57 @@
+import { type SchemaField, type SchemaFieldKind, toKind } from './schema'
+
+export function coerceValue(kind: SchemaFieldKind, raw: string): unknown {
+  if (kind === 'boolean') return raw === 'true'
+  if (kind === 'number' || kind === 'integer') {
+    if (raw.trim() === '') return ''
+    const n = Number(raw)
+    if (!Number.isFinite(n)) return raw
+    if (kind === 'integer' && !Number.isSafeInteger(n)) return raw
+    return n
+  }
+  return raw
+}
+
+export function arrayItemKind(field: SchemaField): SchemaFieldKind {
+  const itemType = field.type.replace(/\[\]$/, '').replace(/\(.*\)$/, '')
+  return toKind(itemType)
+}
+
+export function initFieldValue(field: SchemaField): unknown {
+  if (field.default !== undefined) return field.default
+  if (field.kind === 'array') return []
+  if (field.kind === 'object' || field.children) return initBodyValues(field.children ?? [])
+  if (field.kind === 'boolean') return false
+  return undefined
+}
+
+export function initBodyValues(fields: SchemaField[]): Record<string, unknown> {
+  const init: Record<string, unknown> = {}
+  for (const f of fields) {
+    const value = initFieldValue(f)
+    if (value !== undefined) init[f.name] = value
+  }
+  return init
+}
+
+function isEmpty(value: unknown): boolean {
+  if (value === undefined || value === '') return true
+  if (Array.isArray(value)) return value.length === 0
+  if (typeof value === 'object' && value !== null) return Object.keys(value).length === 0
+  return false
+}
+
+export function pruneBody(value: unknown): unknown {
+  if (Array.isArray(value)) {
+    return value.map(pruneBody).filter((v) => !isEmpty(v))
+  }
+  if (typeof value === 'object' && value !== null) {
+    const result: Record<string, unknown> = {}
+    for (const [key, v] of Object.entries(value)) {
+      const pruned = pruneBody(v)
+      if (!isEmpty(pruned)) result[key] = pruned
+    }
+    return result
+  }
+  return value
+}