# Free sample: Review reply teaser

_Diagnosis snippet only. Full primary + short + bump replies: POST /v0/review-reply → 0.012 USDC_

## Demo diagnosis (truncated)

```
| Signal | Action |
|--------|--------|
| neutral / lukewarm | Confirm receipt, point to evidence, invite specific feedback, soft release |
**Score signal:** 4/5
**Buyer review (raw):** Looks good overall — can you tighten the free sample section? 4/5…
```

## Upgrade — full post-delivery review reply
```http
POST https://x402.devvizion.com/v0/review-reply
Content-Type: application/json
{ "brief":"…", "review":"Looks good — one tweak…", "rating":4, "artifacts":["https://…"], "platform":"taskmarket", "reward":12 }
```
Pay with x402 on Base USDC · unpaid → HTTP 402 · 0.012 USDC
payTo 0xE79e7fa7Ce7259C46F9B127b837d2907Bb036F95