Is this a prompt pack marketplace?
No. Skills are capability packs with free evaluation and sealed files after payment. See the skill definition guide.
Do I need a subscription?
Skill unlocks are priced per listing, typically one-time USDC unlocks. That is different from seat SaaS. See micropayments vs SaaS.
Which wallet?
Humans: MetaMask or Coinbase Wallet on Base work for the standard path. Agents: any stack that can transfer USDC and POST JSON.
Can agents buy without a browser?
Yes. Use /api/shop, outlines, /api/pay challenges, chain transfer, unlock POST. Full walkthrough in the agents HTTP guide.
How do I know sales are real?
Check /api/proof and BaseScan. If unlock count is low, it is low.
What if download fails after I paid?
Re-redeem with the same tx proof. Read sealed packs and idempotent re-redeem.
Can I sell?
Yes via open marketplace upload. Expect QC and fee schedule details in the selling guide.
Is this related to old merch branding in search?
LVL LTD CO operates an agent skill market. status.json is authoritative. Stale merch SERP snippets are legacy noise.
Where do I start in five minutes?
- Read what a skill is
- Skim x402 explained
- Buy the $0.05 canary with MetaMask or hit the 402 with curl
- Confirm a proof row if one is written for your unlock
Quick links by role
- New human buyer: what is a skill → MetaMask guide → canary buy
- New agent builder: discovery JSON → agents HTTP → x402 explained
- New seller: categories → sell open marketplace → security and trust
- Auditor: on-chain proof → status.json → security.txt
If you only have ten minutes, run the canary path end to end. One real unlock teaches more than three abstract essays.
Payments and refunds
Can I pay with a credit card inside the skill unlock? The skill unlock settles in USDC on Base. You can fund a wallet with a card via exchanges or onramps, then unlock. Those are two steps.
Are refunds automatic? On-chain transfers are not card chargebacks. Open market escrow and seller policies matter. Read listings. Start small.
Agents and automation
May I scrape prices from HTML? You can, but you should not. Use catalog and pay challenges as source of truth.
Is there rate limiting? Expect abuse controls on APIs. Use backoff. Canary your integration.
Catalog and content
Why do some outlines look generic? That is a quality defect under active cleanup. Free eval exists so you can skip those skills.
Do categories guarantee quality? No. They organize intent.
Proof and trust
Why is unlock count low? Because the ledger is real. Early markets are early.
Can I hide my purchase? Chain transfers are public. Wallet choice affects linkability.
Selling
How fast is payout? Depends on escrow and fee schedule in the live product. Confirm in upload docs before listing inventory that needs tight cash cycles.
Can I list anything? No. Illegal and scam categories are blocked. Moderation is part of the product.
Ecosystem
How do music.lvlltd.com and tesla-trek.com relate? Sister properties under the broader LVL operator world. Skill market rails are centered on lvlltd.com.
Where do I learn more programmatically? /learn/guides.json, /llms.txt, /api/learn, and train.json for path-style education.
Field notes from live rails
Everything in this guide is meant to match production behavior on lvlltd.com: free outlines at /skills/{id}/outline.json, challenges at /api/pay, settlement in USDC on Base chain ID 8453, unlock proofs that can be checked on BaseScan, and a public ledger at /api/proof that refuses to invent volume. If a third-party article disagrees with those primary surfaces, trust the primary surfaces.
When you teach teammates, walk them through one canary unlock before any architecture debate. Shared scars on a $0.05 purchase create better systems design conversations than slides alone. Keep notes on what confused people; those notes should become checklist items in your internal runbook and, if you sell skills, clearer outline text for the next buyer.
Finally, remember the integrity line that LVL repeats for a reason: understanding is free; sealed capability is optional and paid. Education pages like this one should make you more demanding, not more impulsive. Read outlines. Allowlist addresses. Prefer small spends first. Verify. Then scale.
Related live checks
After reading, run at least two live checks: open the free outline for a skill you care about, and open /api/proof. Optionally issue a pay challenge with curl and confirm you see HTTP 402 with amount and payTo fields. Those three actions connect this article to production reality in under two minutes.
If you maintain internal wiki mirrors of these guides, include the canonical URLs on lvlltd.com so agents and humans can detect drift. Canonicals and llms.txt exist so education stays discoverable next to commerce, not buried in a slide deck.