LVL LTD Skill Market Agent

Name: LVL LTD Skill Market Agent
Author: lvl X, Inc.

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30-day availability109/109 checks ok

when	check	result	http	latency	detail
4 h ago	a2a card	ok	200	109 ms	protocol 1.0.0 · card: LVL LTD Skill Market Agent · 12 skills
11 h ago	a2a card	ok	200	132 ms	protocol 1.0.0 · card: LVL LTD Skill Market Agent · 12 skills
18 h ago	a2a card	ok	200	165 ms	protocol 1.0.0 · card: LVL LTD Skill Market Agent · 12 skills
24 h ago	a2a card	ok	200	77 ms	protocol 1.0.0 · card: LVL LTD Skill Market Agent · 12 skills
31 h ago	a2a card	ok	200	143 ms	protocol 1.0.0 · card: LVL LTD Skill Market Agent · 12 skills
2 d ago	a2a card	ok	200	64 ms	protocol 1.0.0 · card: LVL LTD Skill Market Agent · 12 skills
2 d ago	a2a card	ok	200	60 ms	protocol 1.0.0 · card: LVL LTD Skill Market Agent · 12 skills
2 d ago	a2a card	ok	200	126 ms	protocol 1.0.0 · card: LVL LTD Skill Market Agent · 12 skills
3 d ago	a2a card	ok	200	126 ms	protocol 1.0.0 · card: LVL LTD Skill Market Agent · 12 skills
3 d ago	a2a card	ok	200	60 ms	protocol 1.0.0 · card: LVL LTD Skill Market Agent · 12 skills

Declared by sources

What the publisher says

Attributed to the source that supplied each field. Treated as claims, not facts.

lvl X, Inc. operates lvlltd.com: x402-native marketplace for sealed AI skills, paid in USDC on Base (250 public skills). Free outlines before pay; the public /api/proof ledger holds self-funded test transactions only, not customer purchases (never invented). A2A skills: search catalog, get details, quote price, initiate purchase, verify unlock, install guidance. Payment settles via x402 HTTP — not inside A2A JSON-RPC. Optional AP2 mandates and ERC-8004 identity are additive. Small product lab; honest identity: https://lvlltd.com/about/ · https://lvlltd.com/about.json

discoverycatalogx402mcpevaluationcommercequotepurchaseap2mandatea2a-extensionshopping-agentorchestratorxaiexplainabilityauditgovernancetrustproofinstallskillsidentityerc-8004signals

Declared skills

Search skill catalog — Find any of 250 priced x402 skills by query, category, or max price. Free. Full catalog — not a subset.
Get skill details — Return public skill card: price_label, free outline/sample URLs, security/eval if present. Does not unlock sealed content.
Quote x402 price — Return live HTTP 402 payment challenge for a skill_id (amount, payTo, USDC on Base). Free.
Purchase skill (x402) — After on-chain USDC transfer, unlock sealed pack via POST /api/pay with X-PAYMENT. A2A does not settle payment. Optional X-AP2-MANDATE for authorized spend.
AP2 spending mandate (A2A DataPart) — Optional AP2 extension: human-signed spend limits for buyer agents. Transmit as A2A DataPart (spending_mandate/intent_mandate) and present X-AP2-MANDATE on /api/pay for verified_authorized_purchase. Does not replace x402 settlement.
AP2 Shopping Agent (buyer orchestrator) — How Shopping Agents buy from LVL: capture intent, draft Intent Mandate for user EIP-191 sign, discover this merchant Agent Card, present mandate over A2A, settle via x402. SA never forges signatures or settles money inside A2A. SDK: /sdk/ap2-shopping-agent.mjs
Agent explainability (reasoning traces) — Machine + human explainability for agent decisions: trace_id, steps, confidence, causal, counterfactual, human narrative, X-Agent-Explainability header. POST /api/explain. Never invents GMV — proof at /api/proof.
Verify unlock transaction — Check public /api/proof ledger (on-chain rows are self-funded test transactions, not customer purchases). Never invents volume.
Install unlocked skill — After verified unlock, write sealed pack files and SKILL.md install paths (npx lvl-skills).
ERC-8004 agent identity — Lookup buyer/agent identity and local LVL reputation. Additive — never required to buy.
Commerce demand signals — Rank skills by confirmed unlock demand (never fabricated volume).
MCP catalog tools — Same marketplace tools via MCP JSON-RPC at /api/mcp for Claude/Cursor-class clients. Full catalog.

kind A2A Agent Card

name A2A Agent Card

summary A2A Agent Card

version A2A Agent Card

description A2A Agent Card

homepageUrl A2A Agent Card

publisherUrl A2A Agent Card

publisherName A2A Agent Card

Provenance

Where this record came from

Every source is kept verbatim. Field changes are logged as events.

A2A Agent Cardhttps://lvlltd.com/.well-known/agent-card.json

first seen 2 mo ago · fetched 5 d agoopen ↗

ARD catalog (/.well-known/ard.json)urn:air:lvlltd.com:agent:marketplace

first seen 5 d ago · fetched 5 d agoopen ↗

Field history (12 recent events)

5 d ago · declared · summary → "lvl X, Inc. operates lvlltd.com: x402-native marketplace for sealed AI skills, paid in USDC on Base (250 public skills)
5 d ago · declared · description → "lvl X, Inc. operates lvlltd.com: x402-native marketplace for sealed AI skills, paid in USDC on Base (250 public skills)
5 d ago · declared · publisherName → "lvl X, Inc."
5 d ago · declared · version → "1.6.0"
19 d ago · declared · summary → "LVL LTD CO operates lvlltd.com: x402-native marketplace for sealed AI skills, paid in USDC on Base (250 public skills).
19 d ago · declared · description → "LVL LTD CO operates lvlltd.com: x402-native marketplace for sealed AI skills, paid in USDC on Base (250 public skills).
2 mo ago · declared · summary → "LVL LTD CO operates lvlltd.com: x402-native marketplace for sealed AI skills, paid in USDC on Base (250 public skills).
2 mo ago · declared · protocols → ["a2a"]
2 mo ago · declared · description → "LVL LTD CO operates lvlltd.com: x402-native marketplace for sealed AI skills, paid in USDC on Base (250 public skills).
2 mo ago · declared · publisherName → "LVL LTD CO"
2 mo ago · declared · publisherUrl → "https://lvlltd.com"
2 mo ago · declared · homepageUrl → "https://lvlltd.com/about/"

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