# lvlltd.com — Agent Skill Market (x402)

> Live marketplace where autonomous agents discover priced skills, evaluate free samples, receive HTTP 402 challenges, settle USDC on Base, and unlock sealed capability packs — zero human intervention.

Site: https://lvlltd.com
Company: LVL LTD CO
Network: Base (8453)
Asset: USDC (also accepts USDbC)
Protocol: x402
Standards: x402, ERC-7857
Treasury (payTo): 0xa00876513bAA433ce2B58A5341Fd06d2b6f9A6ED
USDC contract: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

## Canonical zero-human purchase sequence

1. GET https://lvlltd.com/api/shop — single machine entry (inventory + payment contract + fleet)
2. GET https://lvlltd.com/agent.json — A2A-style discovery / agent card fields
3. GET https://lvlltd.com/api/catalog?q=<query>&max_price=<n> — slim searchable inventory
   (full: https://lvlltd.com/catalog.json)
4. GET https://lvlltd.com/skills/<id>/outline.json — FREE evaluation (decide before pay)
   (markdown: https://lvlltd.com/skills/<id>/sample.md)
5. GET https://lvlltd.com/api/pay?skill=<id> — HTTP 402 challenge
   Required fields: amount | maxAmountRequired, payTo, network=base, asset=USDC, assetContract, skill
6. Transfer maxAmountRequired (atomic USDC, 6 decimals) to payTo on Base
7. POST https://lvlltd.com/api/pay with header:
   X-PAYMENT: {"txHash":"0x…","skill":"<id>"}
8. Response: sealed_pack.files (full implementation). Public /sealed/ is teaser/stub only.
9. Re-redeem: same POST with verified txHash, or license.token from unlock response.

## Brand (ignore stale merch search results)

- **Live brand:** LVL LTD CO — x402 Agent Skill Market (Base USDC)
- **Not:** print-on-demand merch / “LvLX” yoga-leggings store (retired; may still appear in Google cache)
- **Authoritative:** https://lvlltd.com/status.json · https://lvlltd.com/status/

## For crawlers & no-JS tools

HTML homepage / hub marketplace **load inventory with JavaScript** ("Loading catalog…").  
Do **not** scrape the empty SPA grid. Use static machine surfaces instead:

| URL | Purpose |
|-----|---------|
| https://lvlltd.com/catalog.json | Full skill inventory (always complete) |
| https://lvlltd.com/catalog/ | **Static HTML table** of every skill (no JS) |
| https://lvlltd.com/api/catalog | Searchable slim API |
| https://lvlltd.com/api/shop | Featured shelves + purchase sequence |
| https://lvlltd.com/skills/{id}/outline.json | Free per-skill evaluation |
| https://tesla-trek.com | Sister product (HTML); skill bridge: `/skills/tesla-trek-coordinator/outline.json` |

## Key endpoints

| URL | Purpose |
|-----|---------|
| /catalog/ | Static HTML catalog (crawler-friendly) |
| /api/shop | Unified machine entry (skills + music/trek fleet links) |
| /api/ready | Readiness: challenge + sealed pack path |
| /api/proof | Last successful agent purchase heartbeat (public proof) |
| /api/health | Liveness + endpoint map |
| /discovery/registration.json | Payload for external agent directories |
| /agent.json | Agent discovery document |
| /.well-known/agent-card.json | A2A-style agent card |
| /.well-known/llms.txt | This file (mirrored) |
| /openapi.json | OpenAPI 3 for pay/catalog/packs |
| /catalog.json | Full priced inventory |
| /api/catalog | Search/filter skills (slim) |
| /api/pay | x402 challenge + unlock (+ license redeem) |
| /api/cart | Batch multi-skill challenges |
| /api/packs | Pack metadata + challenge |
| /skills/index.json | Free sample index |
| /skills/{id}/outline.json | Free evaluation JSON |
| /skills/{id}/sample.md | Free evaluation markdown |
| /protocols.json | x402 + ERC-7857 contract notes |
| /sdk/agent-shop.mjs | Browser/Node agent shop client |
| /api/revenue | Confirmed unlock ledger |

## Payment contract (must match live 402)

- protocol: x402
- network: base (chain_id 8453)
- asset: USDC
- assetContract: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
- payTo: 0xa00876513bAA433ce2B58A5341Fd06d2b6f9A6ED (or challenge.payTo)
- maxAmountRequired: atomic integer (price_usd * 1e6)
- unlock: POST /api/pay with X-PAYMENT {txHash, skill}
- Demo receipts rejected when live (X402_LIVE=1)
- Facilitator: not required; direct Base transfer + txHash proof

## Free evaluation before buy

Every catalog skill exposes:

- GET /skills/<id>/outline.json — structured summary, capabilities, buy path
- GET /skills/<id>/sample.md — human/agent-readable excerpt
- Full sealed runtime (src/, ops/, schemas) only after verified payment

## Paywall integrity

Full pack bodies live under a locked asset path and return only after verified payment.
Public CDN `/sealed/<id>/` exposes teasers only (SKILL.md, README, agent-install, stub src).

## Optional SDK

```js
import { LvlAgentShop } from "https://lvlltd.com/sdk/agent-shop.mjs";
const shop = new LvlAgentShop();
const hits = await shop.search({ q: "seller", max_price: 30 });
const challenge = await shop.challenge(hits.skills[0].id);
// after on-chain USDC transfer:
const unlock = await shop.unlock(hits.skills[0].id, txHash);
```

## Human path (optional — not required for agents)

MetaMask marketplace UI remains: https://lvlltd.com/hub/marketplace?buy=<id>&pay=1

## Sister surfaces (same company fleet)

- music: https://music.lvlltd.com
- tesla-trek: https://tesla-trek.com
- swarm: https://swarm.lvlltd.com
Canonical commerce contract for skills is this site (x402 on Base).

## Honesty

No guaranteed revenue. Confirmed volume is verified unlocks only.
Orchestrate returns plans, not autonomous model runs.

## Docs

- https://lvlltd.com/llms.txt (this file)
- docs/AGENT-PURCHASE.md in repo (canonical agent purchase)
- docs/AGENT-SHOP.md · docs/X402-UNLOCK.md

Signature: ♾️