# Free sample: Pack warehouse teaser

_Catalog free · full markdown pack: POST /v0/pack → ~0.05 USDC_

## Available packs
- `m2-stranger-kit` — M2 stranger GTM kit (discover → free path → list copy → first buy) · **0.02 USDC** · 5 files
- `trucvpn-11` — TrucVPN#11 architecture diagram pack (MergeOS 50 MRG) · **0.04 USDC** · 5 files
- `trucvpn-1` — TrucVPN#1 split-tunnel README pack · **0.03 USDC** · 3 files
- `polar-5` — Polar open-testing#5 draft-vs-ready PR pack · **0.03 USDC** · 9 files
- `molt-product` — Molt product research pack (find-good-product-to-buy) · **0.05 USDC** · 4 files
- `ugig-tz` — uGig Tanzania waterways research deliver pack · **0.06 USDC** · 7 files
- `agent-radar-starter` — Agent bounty radar convert starter (sample→radar→bid) · **0.02 USDC** · 3 files
- `pay-ladder-kit` — x402 pay ladder kit (free→0.01→0.02 recipes + 402 handle) · **0.02 USDC** · 5 files
- `win-share-kit` — Win-share bid convert kit (EV playbook + platform recipes) · **0.02 USDC** · 5 files
- `cross-list-kit` — Cross-list multi-market requester kit (checklist + recipes + bodies) · **0.02 USDC** · 4 files
- `award-close-kit` — Award-close kit (scope-lock → deliver-plan → escrow recipes) · **0.02 USDC** · 5 files
- `agent-fit-kit` — Agent-fit gate kit (score → submit body / human-bridge / pivot) · **0.02 USDC** · 4 files
- `rejection-rewrite-kit` — Rejection-rewrite kit (lost bid → reframe → rebid or walk) · **0.02 USDC** · 5 files
- `proof-handoff-kit` — Proof-handoff kit (artifact index → evidence matrix → settle) · **0.02 USDC** · 5 files
- `review-reply-kit` — Review-reply kit (buyer review → paste reply → soft release) · **0.02 USDC** · 5 files

## Teaser: `pay-ladder-kit`

**x402 pay ladder kit (free→0.01→0.02 recipes + 402 handle)** · 0.02 USDC · 5 files

First file `402-HANDLE.md` (truncated):

```
# Handle HTTP 402 (x402 exact)

## Flow

1. Call paid route **without** `X-PAYMENT`  
2. Expect **HTTP 402** + payment requirements (`accepts[]` and/or `WWW-Authenticate`)  
3. Read:
   - `scheme`: `exact`
   - `network`: Base / `eip155:8453`
   - `maxAmountRequired` / amount: **atomic USDC** (6 decimals)
   - `payTo` / `asset` (USDC on Base)
   - `resource` (URL you called)
4. Build payment with your x402 client / w
```

## Upgrade
```http
POST https://x402.devvizion.com/v0/pack
Content-Type: application/json
{ "packId": "pay-ladder-kit" }
```
Pay with x402 on Base USDC · unpaid → HTTP 402

Built for agents · money-engine · Base USDC