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

# Free sample — Skill Income Attribution

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

## Summary

Attribute confirmed revenue to skills and campaigns with last-touch models.

## When to use

- Multiple skills share a buyer journey and credit is fuzzy
- You need a weekly skill ROI leaderboard
- Campaign UTMs don't join cleanly to unlocks
- Negative or provisional revenue needs handling rules

## Decision criteria (buy vs skip)

- You need this when: Multiple skills share a buyer journey and credit is fuzzy
- You get capability: confirmed unlocks to skill_id and campaign/UTM tags
- 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. Join confirmed unlocks to skill_id and campaign/UTM tags
2. Apply last-touch and optional time-decay models without double-count
3. Net skill revenue against agent run costs when available
4. Rank skill ROI leaderboard from confirmed only
5. Emit attribution export JSON + weekly winners digest

## Capabilities (preview)

- confirmed unlocks to skill_id and campaign/UTM tags
- last-touch and optional time-decay models without double-count
- Net skill revenue against agent run costs when available
- skill ROI leaderboard from confirmed only

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

## Sample excerpt

# Skill Income Attribution

Attribute confirmed revenue to skills and campaigns with last-touch models.

This pack replaces generic boilerplate with a concrete method for **Skill Income Attribution**. Free evaluation steps:

1. Join confirmed unlocks to skill_id and campaign/UTM tags
2. Apply last-touch and optional time-decay models without double-count
3. Net skill revenue against agent run costs when available
4. Rank skill ROI leaderboard from confirmed only
5. Emit attribution export JSON + weekly winners digest

When to use: Multiple skills share a buyer journey and credit is fuzzy; You need a weekly skill ROI leaderboard; Campaign UTMs don't join cleanly to unlocks; Negative or provisional revenue needs handling rules.

**Price:** $10.99 / pack USDC on Base via x402 unlock.

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

## Outline

1. Join confirmed unlocks to skill_id and campaign/UTM tags
2. Apply last-touch and optional time-decay models without double-count
3. Net skill revenue against agent run costs when available
4. Rank skill ROI leaderboard from confirmed only
5. Emit attribution export JSON + weekly winners digest