x402-gated token data endpoint for LINK on Base, pay $0.02 per request in USDC.
What it does
This endpoint at lowpaymentfee.com provides premium API access to LINK token data via the x402 payment protocol. It is part of a broader platform offering dozens of pay-per-call endpoints spanning data analytics, AI/ML inference, finance/Web3 market data, and infrastructure utilities — all gated behind x402 micropayments on the Base network.
The specific endpoint `/api/v1/tokens/LINK` is live and returns a 402 challenge requesting payment in USDC (contract 0x8335…2913 on Base) with a maximum amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). Payment is made via the x402 "exact" scheme, and the endpoint accepts POST requests. The platform advertises no API keys, no rate limits, and instant access — you simply attach an X-PAYMENT header with a valid x402 payment proof.
Documentation is extremely sparse: the docs, pricing, and API pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no example request/response payloads, and no description of what fields the LINK token endpoint actually returns. Based on the platform's categorization under "Finance & Web3" and sibling endpoints like `/api/v1/crypto/quotes` and `/api/v1/finance/prices`, it likely returns token price or market data for LINK, but this is inferred rather than documented.
Capabilities
Use cases
- —Fetching real-time LINK token price or market data without API key registration
- —Integrating pay-per-call crypto data into autonomous agent workflows
- —Building trading bots that pay per data request on Base
Fit
Best for
- —Agents or bots needing keyless, on-demand LINK token data
- —Developers experimenting with x402 micropayment-gated APIs
- —Low-volume consumers who want no subscription or rate-limit overhead
Not for
- —High-volume consumers needing bulk historical token data at low marginal cost
- —Users who need detailed API documentation or guaranteed SLAs
- —Anyone without a Base-network USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/tokens/LINK \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>"Endpoint
Quality
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 examples, and the docs pages are empty stubs. The actual data returned by the LINK endpoint is entirely unknown, making this effectively a stub listing.
Warnings
- —No API documentation available — docs, pricing, and API pages all render only 'Connect wallet'
- —No OpenAPI or schema describing request parameters or response format for /api/v1/tokens/LINK
- —Actual response payload is unknown; 'token data' is inferred from sibling endpoint names
- —Platform appears new or minimally documented; no SLA or uptime guarantees found
Citations
- —The endpoint returns a 402 challenge requesting USDC on Base with maxAmountRequired of 20000 base units ($0.02)https://lowpaymentfee.com/api/v1/tokens/LINK
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/tokens/LINK