/Wiki/sources/honojs__hono/2026/https-hono-dev-llms-full-txt-manual-validator-78b974053630-manual-validator-s0101-c0002.md
Manual validator (3) - hono-docs
Manual validator (3) Source evidence: /Sources/raw/honojs hono/honojs hono.md Canonical citation: https://hono.dev/llms full.txt manual validator Summary ts...
Manual validator (3)
Source evidence: /Sources/raw/honojshono/honojshono.md Canonical citation: https://hono.dev/llms-full.txt#manual-validator
Summary
## Content
```ts
// ❌ this will not work
const res = await app.request('/testing', {
method: 'POST',
body: JSON.stringify({ key: 'value' }),
})
const data = await res.json()
console.log(data) // {}
// ✅ this will work
const res = await app.request('/testing', {
method: 'POST',
body: JSON.stringify({ key: 'value' }),
headers: new Headers({ 'Content-Type': 'application/json' }),
})
const data = await res.json()
console.log(data) // { key: 'value' }
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