6 APIs · 9 endpoints · Base network · x402 protocol
Send Vietnamese or English text; get back a faithful translation with the source cleaned (encoding repaired, whitespace normalized, Vietnamese diacritics restored) and machine-checked: numbers, dates, and proper names are verified preserved, glossary terms honored, and a code-computed confidence score is returned. Price: $0.02 USDC per call (x402 v1, exact scheme, USDC on Base). Credit: 402 Index (MIT)
1 endpoint · $0.02–$0.02Send a suspicious message, link, and/or phone number; get back a plain-words verdict - likely_scam, suspicious, or no_strong_signals - with every warning sign named (pressure, gift-card/wire/crypto asks, credential harvesting, impersonation, prize bait, threats, sender/brand mismatch, lookalike links, premium-rate and toll-fraud numbers) and what to do next. POST /check ($0.10 USDC per call). x402 v1, exact scheme, USDC on Base. HEURISTIC PATTERN CHECK ONLY - NOT A GUARANTEE. Credit: 402 Index (MIT)
1 endpoint · $0.1–$0.1Structured legal-research data from free public primary sources: per-jurisdiction filing-deadline and court-rule records (federal FRCP/FRAP + California civil), every record carrying its primary-source citation and last-verified date. POST /lookup ($0.10 USDC per call) searches the dataset; POST /digest ($0.50 USDC per call) returns one record in full as a verified digest. x402 v1, exact scheme, USDC on Base. RESEARCH DATA ONLY - NOT LEGAL ADVICE. Credit: 402 Index (MIT)
2 endpoints · $0.1–$0.5Send one form field's label, the kind of form, and/or pasted form text; get back plain words: what the field is asking, exactly what to write, a worked example, and the traps - plus whole-form guides (lease, job, tax, medical, benefits, bank, school, insurance claim) and loaded-phrase explainers (penalty of perjury, jointly and severally, indemnify, arbitration). POST /explain ($0.15 USDC per call). x402 v1, exact scheme, USDC on Base. EXPLANATIONS OF COMMON FIELDS ONLY - NOT LEGAL, TAX, MEDICAL, OR FINANCIAL ADVICE. Credit: 402 Index (MIT)
1 endpoint · $0.15–$0.15A licensed shelf of house-authored pages that programs pay to read, per page. POST /catalog ($0.01 USDC) returns shelf metadata - slugs, titles, categories, summaries, word counts - never page text. POST /read ($0.05 USDC) returns ONE full page under a per-read license (use it in your own work for your user; resale and republication of the full text are not licensed). Unpaid crawlers are fenced out: every content route answers 402 with x402 PaymentRequirements until a verified payment arrives. Dual x402 rail (v1 via X-PAYMENT, v2 via PAYMENT-SIGNATURE), exact scheme, USDC on Base. Credit: 402 Index (MIT)
2 endpoints · $0.01–$0.05Send a claim; get back a verdict - supported, contradicted, or unverifiable - with primary-source citations and a calibrated confidence score. Verification/research only - not advice. Price: $0.05 USDC per call (x402 v1, exact scheme, USDC on Base). Credit: 402 Index (MIT)
2 endpoints · $0.05–$5.05tap-c1-claim-checker.vercel.app, tap-c2-legal-data.vercel.app, tap-c3-viet-data.vercel.app, tap-c4-scam-shield.vercel.app, tap-c5-form-explainer.vercel.app and 1 moreUnclaimed has 6 live APIs on PayAPI Market with 9 endpoints in total, in Verification, Finance, Tools: C3 - Vietnamese Data (VI↔EN, cleaned + checked), C4 - Scam-Shield Check (is this message / link / number a scam?), C2 - Legal Research Data (cite-verified court rules & deadlines), C5 - Form Explainer (what does this form field mean, and what do I write?), C6 - Pay-Per-Crawl Guard (house content, licensed per page), and 1 more.
Not yet. Unclaimed's listings are live and answer an x402 payment challenge, but PayAPI Market has not paid for a call to them, so none carries a settlement-verified badge.
Per request, in USDC, over the x402 protocol. An agent calls the endpoint, receives HTTP 402 with the price and wallet, pays and retries. There is no API key, account or subscription, and Unclaimed keeps 100% of each payment.