x402-gated token data endpoint for GRT on Base, pay $0.02 per request in USDC.
What it does
This endpoint at lowpaymentfee.com provides premium API access to token data for GRT (The Graph token) via the x402 payment protocol. It is part of a broader platform offering data & analytics, AI/ML inference, finance/Web3, and infrastructure utility endpoints, all gated behind x402 micropayments on the Base network.
The specific endpoint `/api/v1/tokens/GRT` accepts POST requests and returns JSON. Payment is settled in USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base using the "exact" scheme. The maximum amount required per call is 20,000 base units of USDC, which equals $0.02 (USDC uses 6 decimals). There are no API keys, no rate limits, and no minimum commitments — callers simply attach an X-PAYMENT header with a valid x402 payment proof.
Documentation on the site is extremely sparse: the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no example request/response payloads, and no description of what fields the GRT token endpoint actually returns. The endpoint is confirmed live (returns a proper 402 challenge), but the lack of documentation means callers must discover the response format empirically.
Capabilities
Use cases
- —Fetching real-time or on-demand data about the GRT (The Graph) token
- —Integrating pay-per-call token data into autonomous agent workflows
- —Building dashboards or bots that need GRT market information without managing API keys
Fit
Best for
- —Agents or services that need keyless, pay-per-use token data on Base
- —Developers experimenting with x402 micropayment-gated APIs
- —Lightweight integrations where $0.02/request is acceptable and no subscription is desired
Not for
- —High-volume production use cases where per-request costs add up quickly
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —Anyone needing token data for free or via traditional API-key authentication
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/tokens/GRT \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_proof>"Endpoint
Quality
The endpoint is confirmed live with a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no documentation, no example requests or responses, and no description of what the endpoint actually returns. This is effectively a stub listing.
Warnings
- —No API documentation available — docs, pricing, API, and README pages all show only 'Connect wallet'
- —No OpenAPI or output schema describing the response format for /api/v1/tokens/GRT
- —Response payload structure is completely unknown and must be discovered empirically
- —The platform lists many endpoint categories (AI, analytics, finance, infrastructure) but provides no detail on any of them
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/tokens/GRT
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/tokens/GRT
- —Platform advertises $0.02 per request, no API keys, no rate limits, instant access, Base networkhttps://lowpaymentfee.com
- —Docs, pricing, API, and README pages render only 'Connect wallet' with no further contenthttps://lowpaymentfee.com/docs