Crypto token data for THETA via x402 micropayment on Base, $0.02/request in USDC.
What it does
This endpoint at lowpaymentfee.com provides token data for THETA (and likely other crypto tokens via sibling endpoints) behind an x402 paywall. The provider operates a broad API platform offering data & analytics, AI/ML inference, finance/Web3 data, and utility services — all priced at $0.02 per request, settled in USDC on the Base network. No API keys or rate limits are required; callers simply attach an x402 payment header to each request.
The specific endpoint `/api/v1/tokens/THETA` sits under the Finance & Web3 category and likely returns token-level information for the THETA token (price, metadata, or quote data). The x402 challenge confirms the endpoint is live, accepting POST requests, and requires up to 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals) per call. Payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base mainnet.
Documentation is extremely sparse — the docs, pricing, and API pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no response examples, and no detailed field-level documentation available from the crawl. The exact response shape for this endpoint is unknown and must be discovered by making a paid request.
Capabilities
Use cases
- —Fetching current THETA token data (price, metadata) in an automated agent pipeline
- —Building a portfolio tracker that pays per-request for token information
- —Integrating crypto token lookups into a chatbot or trading bot without managing API keys
Fit
Best for
- —Agents or bots that need on-demand THETA token data without subscription overhead
- —Developers who prefer pay-per-call crypto data access settled on-chain
- —x402-compatible clients on the Base network
Not for
- —High-frequency trading requiring sub-second latency and bulk data (no documented rate guarantees)
- —Users who need comprehensive historical OHLCV data (no evidence this endpoint provides it)
- —Non-crypto callers who cannot produce x402 payment headers
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/tokens/THETA \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_header>"Endpoint
Quality
The endpoint is confirmed live via a valid 402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI schema, no response examples, and no meaningful documentation beyond the landing page listing. The actual response format for /api/v1/tokens/THETA is entirely unknown.
Warnings
- —No OpenAPI or response schema available — response format is unknown
- —Documentation pages (/docs, /pricing, /api, /README) all render only 'Connect wallet' with no usable content
- —The exact data returned for THETA token is inferred from the URL pattern; no specification exists
- —Provider hosts many diverse endpoints (AI, analytics, finance, utils) all at $0.02 — unclear if all are fully implemented
Citations
- —Endpoint returns 402 with x402 challenge requiring up to 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/tokens/THETA
- —All APIs priced at $0.02/request with no API keys, no rate limits, on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/tokens/THETA