SushiSwap TVL data via x402 micropayment on Base — $0.02 per request, no API key needed.
What it does
This endpoint returns SushiSwap total value locked (TVL) data through the x402 payment protocol. It is hosted on lowpaymentfee.com, a platform that offers a broad catalog of pay-per-call APIs spanning DeFi, analytics, AI/ML, finance, and utility services. Each request costs $0.02 in USDC on the Base network, with no API keys, subscriptions, or rate limits required.
The specific endpoint at `/api/v1/defi/sushiswap/tvl` accepts POST requests and returns JSON. Payment is handled inline via the x402 protocol: callers attach an `X-PAYMENT` header containing a signed USDC payment of up to 20,000 base units (i.e., $0.02, since USDC uses 6 decimals) to the payee address on Base. The payment timeout is 300 seconds. The asset used is USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` on Base).
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 the response format beyond the mime type `application/json`. The endpoint is confirmed live (returns a proper 402 challenge), but the actual data structure of the TVL response is unknown.
Capabilities
Use cases
- —Querying current SushiSwap TVL for portfolio dashboards
- —Feeding DeFi analytics pipelines with on-demand TVL snapshots
- —Comparing DEX liquidity across protocols
- —Automated monitoring of SushiSwap liquidity changes
Fit
Best for
- —Agents or bots that need on-demand DeFi TVL data without managing API keys
- —Developers building DeFi dashboards who prefer pay-per-call pricing
- —x402-compatible wallets and agents on the Base network
Not for
- —High-frequency polling where $0.02/request adds up quickly
- —Users who need historical TVL time-series (no evidence this endpoint provides that)
- —Anyone without a Base-network USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/defi/sushiswap/tvl \
-H "X-PAYMENT: <x402-signed-payment-header>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is confirmed live via a valid 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no documentation, no OpenAPI schema, no example request or response, and the docs pages are empty. The actual data returned is completely unknown, making this effectively a stub listing.
Warnings
- —No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet'
- —No OpenAPI or JSON schema describing request parameters or response format
- —Response structure for TVL data is entirely unknown
- —The broader lowpaymentfee.com catalog lists many endpoint categories but none specifically mention this /defi/sushiswap/tvl path — it may be an unlisted or experimental endpoint
Citations
- —Endpoint returns 402 with x402 challenge requiring USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/defi/sushiswap/tvl
- —Max amount required is 20000 base units of USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), equaling $0.02https://lowpaymentfee.com/api/v1/defi/sushiswap/tvl
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —Payment timeout is 300 seconds and payTo address is 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3https://lowpaymentfee.com/api/v1/defi/sushiswap/tvl