---
skill_id: x402-receipt-normalizer
evaluation: free
price_usd_full: 2.99
challenge: https://lvlltd.com/api/pay?skill=x402-receipt-normalizer
outline: https://lvlltd.com/skills/x402-receipt-normalizer/outline.json
standards: x402, ERC-7857
---

# Free sample — x402 Receipt Normalizer

**Skill ID:** `x402-receipt-normalizer`  
**Full unlock:** $2.99 USDC via x402 on Base  
**Challenge:** https://lvlltd.com/api/pay?skill=x402-receipt-normalizer  
**Outline JSON:** https://lvlltd.com/skills/x402-receipt-normalizer/outline.json

## Summary

Normalize crypto/x402 receipts into ledger-ready payment events.

## When to use

- Receipts arrive in inconsistent formats from agents or wallets
- You need idempotent unlocks keyed by tx hash
- Multi-chain notes or amount units keep breaking imports
- Human review queues need clean JSONL for operators

## Decision criteria (buy vs skip)

- You need this when: Receipts arrive in inconsistent formats from agents or wallets
- You get capability: mixed receipt formats into lvl receipt schema
- Budget fits: full unlock is $2.99 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. Parse mixed receipt formats into lvl receipt schema
2. Normalize amounts, currency codes, and timestamps
3. Quarantine malformed receipts without silent drop
4. Idempotent emit by source_ref into ledger
5. Emit normalizer matrix + sample normalized JSONL

## Capabilities (preview)

- mixed receipt formats into lvl receipt schema
- Normalize amounts, currency codes, and timestamps
- Quarantine malformed receipts without silent drop
- Idempotent emit by source_ref into ledger

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

## Sample excerpt

# x402 Receipt Normalizer

Normalize crypto/x402 receipts into ledger-ready payment events.

This pack replaces generic boilerplate with a concrete method for **x402 Receipt Normalizer**. Free evaluation steps:

1. Parse mixed receipt formats into lvl receipt schema
2. Normalize amounts, currency codes, and timestamps
3. Quarantine malformed receipts without silent drop
4. Idempotent emit by source_ref into ledger
5. Emit normalizer matrix + sample normalized JSONL

When to use: Receipts arrive in inconsistent formats from agents or wallets; You need idempotent unlocks keyed by tx hash; Multi-chain notes or amount units keep breaking imports; Human review queues need clean JSONL for operators.

**Price:** $11.99 / pack USDC on Base via x402 unlock.

**Standards:** x402 payments · ERC-7857 sealed skill model · agent-swarm ready.

## Outline

1. Parse mixed receipt formats into lvl receipt schema
2. Normalize amounts, currency codes, and timestamps
3. Quarantine malformed receipts without silent drop
4. Idempotent emit by source_ref into ledger
5. Emit normalizer matrix + sample normalized JSONL