---
skill_id: free-to-paid-bridge
evaluation: free
price_usd_full: 6.99
challenge: https://lvlltd.com/api/pay?skill=free-to-paid-bridge
outline: https://lvlltd.com/skills/free-to-paid-bridge/outline.json
standards: x402, ERC-7857
---

# Free sample — Free-to-Paid Bridge

**Skill ID:** `free-to-paid-bridge`  
**Full unlock:** $6.99 USDC via x402 on Base  
**Challenge:** https://lvlltd.com/api/pay?skill=free-to-paid-bridge  
**Outline JSON:** https://lvlltd.com/skills/free-to-paid-bridge/outline.json

## Summary

Value-gated upgrades from free usage to paid skills without hostage patterns.

## When to use

- Free users never convert and paid users feel few
- You're deciding what to give free vs paid in a skill
- Paywall copy is weak or feels extractive
- You need freemium packaging for agent tools

## Decision criteria (buy vs skip)

- You need this when: Free users never convert and paid users feel few
- You get capability: free surfaces to paid unlock moments without hostage export locks
- Budget fits: full unlock is $6.99 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. Map free surfaces to paid unlock moments without hostage export locks
2. Define aha→paywall triggers with honest limit messaging
3. Instrument free→paid funnel events agents and humans can audit
4. Design upgrade CTAs by surface (catalog, 402, post-sample)
5. Emit freemium packaging matrix + bridge KPI scorecard

## Capabilities (preview)

- free surfaces to paid unlock moments without hostage export locks
- aha→paywall triggers with honest limit messaging
- free→paid funnel events agents and humans can audit
- upgrade CTAs by surface (catalog, 402, post-sample)

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

## Sample excerpt

# Free-to-Paid Bridge

Value-gated upgrades from free usage to paid skills without hostage patterns.

This pack replaces generic boilerplate with a concrete method for **Free-to-Paid Bridge**. Free evaluation steps:

1. Map free surfaces to paid unlock moments without hostage export locks
2. Define aha→paywall triggers with honest limit messaging
3. Instrument free→paid funnel events agents and humans can audit
4. Design upgrade CTAs by surface (catalog, 402, post-sample)
5. Emit freemium packaging matrix + bridge KPI scorecard

When to use: Free users never convert and paid users feel few; You're deciding what to give free vs paid in a skill; Paywall copy is weak or feels extractive; You need freemium packaging for agent tools.

**Price:** $6.99 / pack USDC on Base via x402 unlock.

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

## Outline

1. Map free surfaces to paid unlock moments without hostage export locks
2. Define aha→paywall triggers with honest limit messaging
3. Instrument free→paid funnel events agents and humans can audit
4. Design upgrade CTAs by surface (catalog, 402, post-sample)
5. Emit freemium packaging matrix + bridge KPI scorecard