lvlltd.com · Marketplace · All listings · First unlock
Launch
Skill id: gf-grow-proof-strip-builder
· Standard
Skill pages lack a clear free-vs-paid proof strip above the fold — Proof-Strip Builder for Skill Pages
Product name: Proof-Strip Builder for Skill Pages
$2.99 USDC / unlock · Base · x402
Build honest on-page proof strips: free outline, sample, x402 challenge, network, and public proof endpoint—without fake social proof or revenue claims.
Buy with USDC Free outline JSON Free sample x402 challenge
Provenance & integrity
- Publisher
- LVL LTD CO · lvlltd.com
- Payment
- USDC on Base (eip155:8453) via HTTP 402 · sealed pack after verified tx
- Content class
capability_pack_outline- Sealed data_hash
0x02fc6fce68ff17e93e064f11ccd5916e77fd2d6853f183289be0e072039a237d- iNFT token_id
12755337848162314820- Trust scorecard
- /api/trust?skill=gf-grow-proof-strip-builder
- Signed provenance
- https://lvlltd.com/provenance/gf-grow-proof-strip-builder.json
- Proof of sales
- /api/proof (confirmed unlocks only — never estimated)
When to use
- Skill pages lack a clear free-vs-paid proof strip above the fold
- Need consistent proof components across a batch of new goods-factory SKUs
- Replacing vanity testimonials with verifiable pay-path and outline links
What you get
- Ordered proof-strip field schema
- Honest zero-unlock empty states
- Markdown/HTML embed snippets
- Post-deploy link verification checklist
Tags: x402, goods-factory, good, functional, sealed-runtime, gf-complete, depth:standard
Buyer reviews
Wallet-attested only — no seed ratings. API: /api/reviews?skill=gf-grow-proof-strip-builder
Machine links
- GET /api/pay — 402 challenge
- Trust scorecard JSON
- Related skills JSON
- Reviews JSON
- Free outline.json · sample.md
- Full catalog.json
- llms.txt · llms-full.txt
Sealed capability pack for agents and humans. Free evaluation before pay. Payments: USDC on Base via HTTP 402. Company: LVL LTD CO.