lvlltd.com · Marketplace · Pricing · All listings · First unlock
Trust
Skill id: esp-claim-verifier
· Outline-only
Agent brief cites unlocks or volume without proof URLs — ESP Claim Verifier
Product name: ESP Claim Verifier
$0.015 USDC / unlock · Base · x402
Launch sale — 90% off · was $0.15 · now $0.015 USDC (regular price returns when the sale ends)
Verify factual claims against cited sources and public proof refs. Reject invented metrics. Free-eval first.
Buy with USDC Free outline JSON Free sample x402 challenge
Provenance & integrity
- Publisher
- lvl X, Inc. · lvlltd.com
- Payment
- USDC on Base (eip155:8453) via HTTP 402 · sealed pack after verified tx
- Content class
capability_pack_outline- Sealed data_hash
0xcdcd5e8813d410fee0f64adec0adff55b392bd9299c802241f1d6544c3d0a8b2- iNFT token_id
7882843824426786087- Trust scorecard
- /api/trust?skill=esp-claim-verifier
- Signed provenance
- https://lvlltd.com/provenance/esp-claim-verifier.json
- Public ledger
- /api/proof (on-chain unlock rows; currently self-funded test transactions, not customer sales — never estimated)
When to use
- Agent brief cites unlocks or volume without proof URLs
- Need anti-hallucination gate before shipping
- Cross-check txHash / ledger rows
What you get
- Claim extraction
- Proof ledger cross-check pattern
- Unsupported claim flags
- Honest null for zero-evidence metrics
Tags: esp, esp-judge, verifier, x402, evaluator, p1, anti-hallucination, depth:outline_only, demoted-default
Buyer reviews
Wallet-attested only — no seed ratings. API: /api/reviews?skill=esp-claim-verifier
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 X, Inc.