---
skill_id: bundle-x402-buyer-ops
evaluation: free
price_usd_full: 4.49
challenge: https://lvlltd.com/api/pay?skill=bundle-x402-buyer-ops
outline: https://lvlltd.com/skills/bundle-x402-buyer-ops/outline.json
standards: x402, ERC-7857
---

# Free sample — x402 Buyer Ops Stack

**Skill ID:** `bundle-x402-buyer-ops`  
**Full unlock:** $4.49 USDC via x402 on Base  
**Challenge:** https://lvlltd.com/api/pay?skill=bundle-x402-buyer-ops  
**Outline JSON:** https://lvlltd.com/skills/bundle-x402-buyer-ops/outline.json

## Summary

First micropay practice → gas envelope → retry/idempotency → integrity check after unlock.

## When to use

- You want a multi-step agent workflow, not one-off skills
- Buying members separately would cost more
- Practice unlock with agent-x402-first-buy
- Forecast gas with gas-fee-forecaster-base

## Decision criteria (buy vs skip)

- You need this when: You want a multi-step agent workflow, not one-off skills
- You get capability: Single x402 unlock for all member sealed packs
- Budget fits: full unlock is $4.49 USDC on Base
- You can automate unlock via HTTP 402 without a browser
- You only need teaser/outline first — sealed src/ops stay locked until payment

## Outline (preview)

1. Step 1: agent-x402-first-buy
2. Step 2: gas-fee-forecaster-base
3. Step 3: x402-retry-idempotency-kit
4. Step 4: sealed-payload-integrity-checker

## Capabilities (preview)

- Single x402 unlock for all member sealed packs
- Declared execution / handoff order
- Saves $1.03 vs buying parts ($5.52 → $4.49)

## What you get after payment

- SKILL.md (teaser public)
- agent-install.json (public meta)
- src/index.js (stub public; full after unlock)
- Full sealed: src/, schemas/, ops/* (when present) after verified X-PAYMENT

## Agent buy path (zero human UI)

```
GET  https://lvlltd.com/skills/bundle-x402-buyer-ops/outline.json
GET  https://lvlltd.com/api/pay?skill=bundle-x402-buyer-ops   → HTTP 402
# transfer maxAmountRequired USDC to payTo on Base
POST https://lvlltd.com/api/pay
  X-PAYMENT: {"txHash":"0x…","skill":"bundle-x402-buyer-ops"}
# response.sealed_pack.files = full pack
```

## Sample excerpt

# x402 Buyer Ops Stack

**Price:** $4.49 USDC  
**Category:** ops  
**Version:** 1.0.0  
**Protocols:** x402, ERC-7857  
**Tags:** x402, ops, payments, bundle, workflow  

## Summary

First micropay practice → gas envelope → retry/idempotency → integrity check after unlock.

## Description

Ordered ops stack for agents (and operators) buying sealed skills on Base without double-pay or integrity blind spots.

## When to use

- You want a multi-step agent workflow, not one-off skills
- Buying members separately would cost more
- Practice unlock with agent-x402-first-buy
- Forecast gas with gas-fee-forecaster-base

## After purchase (lvlltd.com)

1. Pay USDC on Base via x402 to the treasury
2. POST `/api/pay` with `X-PAYMENT: {"txHash","skill":"bundle-x402-buyer-ops"}`
3. Receive `sealed_pack.files` (code + docs)
4. Install: `node scripts/install-unlocked-pack.mjs unlock.json ./skills`
5. `import { createSkill } from './skills/bundle-x402-buyer-ops/src/index.js'`

## Standards

- x402 micropayments (Base USDC / USDbC)
- ERC-7857 sealed iNFT ownership record (marketplace unlock ≠ runtime design)
- Operational packages ship as sealed pack files after verified payment

## Safety

- No secrets, private keys, or exploit content
- Human escalate on high blast-radius actions
- Not legal, tax, medical, or financial advice