Curve Finance TVL data via x402 micropayment on Base for $0.02/request
What it does
This endpoint provides Curve Finance total value locked (TVL) data through the x402 payment protocol. It is hosted on lowpaymentfee.com, a platform offering a broad catalog of pay-per-call APIs spanning DeFi, analytics, AI/ML, finance, and utility services. Each request is settled on the Base network using USDC at a cost of $0.02 per call (20,000 base units of USDC with 6 decimals). No API keys or accounts are required — callers simply attach an x402 payment header.
The specific endpoint `/api/v1/defi/curve/tvl` is categorized under the Finance & Web3 section of the platform. While the landing page lists this endpoint's existence, no detailed documentation, request/response schema, or example payloads were found in the crawled material. The docs, pricing, and API pages all rendered only a "Connect wallet" prompt with no additional content. The endpoint is confirmed live via a valid 402 challenge response using x402 version 1 with the "exact" payment scheme.
The platform advertises simple pricing at $0.02 per request across all endpoints, with no rate limits, no minimums, and instant access. Payment is made in USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on the Base L2 network. The payment timeout is 300 seconds.
Capabilities
Use cases
- —Fetching current Curve Finance TVL for portfolio dashboards
- —Monitoring DeFi protocol health by tracking Curve TVL over time
- —Integrating Curve TVL data into automated trading or risk management agents
- —Building DeFi analytics dashboards that aggregate TVL across protocols
Fit
Best for
- —Agents or bots needing on-demand Curve TVL data without API key management
- —Developers wanting low-friction DeFi data access via micropayments
- —Applications on Base network that can natively settle USDC payments
Not for
- —High-frequency bulk data ingestion where per-request costs add up quickly
- —Users who need detailed historical TVL time-series (no evidence of historical data support)
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/defi/curve/tvl \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is confirmed live via a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no documentation, no request/response schema, no examples, and no description of what data fields are returned. The docs pages are empty. This is effectively a stub listing.
Warnings
- —No request or response schema available — the actual data format returned is unknown
- —Documentation pages (/docs, /api, /pricing, /README) all render only 'Connect wallet' with no content
- —The specific /api/v1/defi/curve/tvl endpoint is not explicitly listed on the landing page (only finance/prices, finance/rates, crypto/quotes, crypto/gas are shown), raising questions about whether this is a fully supported endpoint
- —No examples or field descriptions available for the Curve TVL response
Citations
- —The endpoint returns a 402 challenge with x402 version 1, exact scheme, on Base network, requiring 20000 base units of USDChttps://lowpaymentfee.com/api/v1/defi/curve/tvl
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/defi/curve/tvl
- —Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The landing page lists Finance & Web3 endpoints including /api/v1/finance/prices, /api/v1/crypto/quotes, etc.https://lowpaymentfee.com