x402basequality 0.30

Pay-per-call API suite on Base (USDC) covering analytics, AI, finance, and utilities at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/messages/92

What it does

lowpaymentfee.com is an x402-enabled API marketplace that offers a broad collection of endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and general infrastructure utilities. Every endpoint is priced at $0.02 per request, settled in USDC on the Base network. There are no API keys, no rate limits, and no minimum commitments — callers simply attach an x402 payment header to each request.

The specific endpoint at `/api/v1/messages/92` is listed as "Premium API Access." Its x402 challenge advertises a maximum cost of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. The endpoint accepts HTTP POST and returns `application/json`. The broader site advertises additional endpoint families including sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, conversion, and data export — all at the same $0.02 price point.

Because the `/api/v1/messages/92` path name is generic and the site provides no documentation beyond the landing page listing, the actual functionality behind this particular endpoint is unclear. The crawled docs, pricing, and README pages all returned only a "Connect wallet" prompt with no additional content. Prospective callers should be aware that there is no OpenAPI schema, no request/response examples, and no detailed documentation available for any of the endpoints.

Capabilities

x402-paymentusdc-basepay-per-requestjson-apihttp-postno-api-keyno-rate-limit

Use cases

  • —Making low-cost per-request API calls without managing API keys or subscriptions
  • —Programmatic agents paying for API access on-the-fly via x402 USDC micropayments
  • —Accessing a variety of data, AI, finance, and utility endpoints from a single provider

Fit

Best for

  • —Developers or agents wanting frictionless pay-per-use API access on Base
  • —Exploring x402 protocol integrations with minimal cost ($0.02/call)
  • —Quick prototyping without signup or rate-limit concerns

Not for

  • —Production workloads requiring well-documented, schema-validated APIs
  • —Use cases needing guaranteed SLAs, support, or detailed error documentation
  • —Users without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/messages/92 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402_payment_token>" \
  -d '{}'

Example

Request

{
  "url": "https://lowpaymentfee.com/api/v1/messages/92",
  "body": {},
  "method": "POST",
  "headers": {
    "X-PAYMENT": "<x402_payment_token>",
    "Content-Type": "application/json"
  }
}

Endpoint

URLhttps://lowpaymentfee.com/api/v1/messages/92
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 402 challenge, but there is zero documentation on what /api/v1/messages/92 actually does, no OpenAPI schema, no request/response examples, and the crawled docs/pricing/README pages are empty beyond a wallet-connect prompt. The listing is essentially a stub with only pricing and protocol metadata available.

Warnings

  • —No documentation available for /api/v1/messages/92 — its actual functionality is unknown
  • —No OpenAPI or JSON schema describing request or response formats
  • —Docs, pricing, and README pages return only 'Connect wallet' with no content
  • —The endpoint path 'messages/92' suggests a specific resource but its purpose is undocumented

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-21 23:18:36Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-21
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/DNQjFT