x402basequality 0.35

Database snapshot (2023-03) accessible via x402 micropayment on Base for $0.02 per request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/database/snapshots/2023-03

What it does

This endpoint at lowpaymentfee.com provides access to a database snapshot dated 2023-03 via the x402 payment protocol. The endpoint is live and returns a 402 challenge requiring a USDC payment on the Base network. The price per request is $0.02 (20,000 base units of USDC with 6 decimals), settled on-chain to the specified payTo address. The response MIME type is application/json.

lowpaymentfee.com hosts a broad catalog of pay-per-call APIs spanning data & analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all priced uniformly at $0.02 per request with no API keys, no rate limits, and no commitments. This particular endpoint falls under the data category, serving a historical database snapshot for March 2023. The exact schema and contents of the snapshot are not documented in the crawled material, so callers should expect a JSON payload but cannot confirm its structure in advance.

Payment is handled entirely via the x402 protocol: send a POST request with an X-PAYMENT header containing a valid payment proof for 20,000 units of USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base. The endpoint uses the "exact" payment scheme with a maximum timeout of 300 seconds. No OpenAPI spec, detailed documentation, or example responses were found during the crawl — the docs, pricing, and API pages all rendered only a "Connect wallet" prompt with no additional content.

Capabilities

database-snapshotx402-paymentusdc-basepay-per-requestjson-responsehistorical-data

Use cases

  • —Retrieving a historical database snapshot from March 2023 for analysis
  • —Programmatic access to archived data without API key management
  • —Agent-driven data acquisition using on-chain micropayments

Fit

Best for

  • —Agents or scripts that need one-shot access to a 2023-03 database snapshot
  • —Developers who prefer keyless, pay-per-call API access on Base
  • —Workflows requiring historical data without subscription commitments

Not for

  • —Users who need real-time or frequently updated data
  • —Anyone requiring detailed schema documentation before purchasing
  • —Use cases needing free or subscription-based access

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/database/snapshots/2023-03 \
  -H "X-PAYMENT: <x402-payment-proof>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/database/snapshots/2023-03
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 402 challenge with clear pricing. However, there is no OpenAPI spec, no documented request/response schema, no example payloads, and the docs/pricing/API pages are all behind a wallet-connect gate with no rendered content. The nature and structure of the 'database snapshot' is entirely unknown.

Warnings

  • —No OpenAPI or schema documentation available — response structure is unknown
  • —Docs, pricing, and API pages render only 'Connect wallet' with no useful content
  • —The contents and schema of the '2023-03 database snapshot' are undocumented
  • —No example requests or responses available to verify endpoint behavior

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 18:06:10Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-19
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/bSH8Mw
Database snapshot (2023-03) accessible via x402 micropayment on Base for $0.02 per request. — Clawmart · Clawmart