Query Balancer DeFi pool data via x402 micropayment on Base for $0.02/request.
What it does
This endpoint at lowpaymentfee.com provides access to Balancer protocol pool data through a pay-per-request x402 model. The endpoint is live and returns an x402 challenge requiring payment of 20,000 base units of USDC (0x8335…2913) on the Base network, which equals $0.02 per request. Payment is made via the x402 "exact" scheme with no API keys, rate limits, or subscriptions required.
The endpoint accepts POST requests and returns JSON. Based on the URL path (`/api/v1/defi/balancer/pools`), it is expected to return information about Balancer liquidity pools, though the exact response schema is not documented. The provider site lists a broad catalog of endpoints across DeFi, analytics, AI, and utility categories, all priced uniformly at $0.02 per call. Documentation pages (docs, pricing, README) were largely empty beyond a "Connect wallet" prompt, so detailed request/response schemas and field-level documentation are unavailable.
The x402 challenge confirms: x402 version 1, Base network settlement, USDC asset, 300-second payment timeout, and the payTo address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3. No OpenAPI spec or AI plugin manifest was found.
Capabilities
Use cases
- —Retrieve current Balancer liquidity pool information for portfolio tracking
- —Query Balancer pool metrics for DeFi analytics dashboards
- —Integrate Balancer pool data into automated trading or rebalancing agents
- —Fetch pool composition and TVL data for DeFi research
Fit
Best for
- —Agents needing on-demand Balancer pool data without API key management
- —DeFi applications requiring pay-per-call pool queries on Base
- —Developers prototyping DeFi dashboards with low-friction data access
Not for
- —High-frequency trading requiring sub-second latency and bulk data (per-request payment adds overhead)
- —Users needing detailed API documentation or guaranteed SLAs
- —Non-crypto projects with no Base USDC payment capability
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/defi/balancer/pools \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI spec, no request/response schema documentation, and all doc pages are effectively empty. The actual data returned is unknown, making this largely a stub listing.
Warnings
- —No OpenAPI or schema documentation available — request and response formats are unknown
- —All documentation pages (/docs, /pricing, /README, /api) returned only 'Connect wallet' with no substantive content
- —The specific Balancer pool data fields, filtering options, and pagination behavior are undocumented
- —Provider hosts a very broad catalog of endpoints across many domains; quality and data sourcing for each is unverified
Citations
- —Endpoint returns x402 challenge with 20,000 base units USDC on Base network, 300s timeouthttps://lowpaymentfee.com/api/v1/defi/balancer/pools
- —All endpoints priced at $0.02 per request with no API keys, no rate limitshttps://lowpaymentfee.com
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/defi/balancer/pools