x402basequality 0.40

Yearn Finance APY data via x402 micropayment on Base, $0.02 per request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/defi/yearn/apy

What it does

This endpoint returns Yearn Finance APY (Annual Percentage Yield) data through the x402 payment protocol. It is hosted on lowpaymentfee.com, a platform that offers a variety of pay-per-call APIs spanning DeFi, analytics, AI/ML, finance, and utility categories. Each request costs $0.02 in USDC on the Base network — no API keys, no rate limits, and no subscriptions required.

The specific endpoint `/api/v1/defi/yearn/apy` is a POST endpoint that accepts JSON and returns JSON. Payment is handled 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 endpoint responds with Yearn vault APY information, though the exact response schema is not documented in the available materials.

The platform advertises a broad catalog of endpoints at the same $0.02 price point, including price feeds, gas estimates, sentiment analysis, text summarization, and more. Documentation pages (docs, pricing, README) appear to be behind a wallet-connect gate and did not yield substantive content during crawling, so detailed request/response schemas and field-level documentation are unavailable.

Capabilities

defi-apy-datayearn-financex402-paymentusdc-basepay-per-requestjson-api

Use cases

  • —Querying current Yearn Finance vault APYs for portfolio dashboards
  • —Comparing DeFi yield opportunities programmatically
  • —Feeding Yearn APY data into automated yield-farming strategies
  • —Displaying real-time DeFi yield information in agent-driven workflows

Fit

Best for

  • —Agents or bots that need on-demand DeFi yield data without API key management
  • —Developers building yield aggregator dashboards
  • —Automated trading strategies that compare Yearn vault returns

Not for

  • —Historical time-series APY analysis (no evidence of historical data support)
  • —Users who need free or high-volume bulk data (each call costs $0.02)

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/defi/yearn/apy \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-signed-payment>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/defi/yearn/apy
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.40/ 1.00

The endpoint is live (402 challenge captured) with clear pricing ($0.02 USDC on Base), but documentation pages are gated behind wallet-connect and yielded no content. No request/response schema, no example payloads, and no detailed description of what fields the Yearn APY response contains. The listing is functional but essentially a stub in terms of developer documentation.

Warnings

  • —Documentation, pricing, and README pages are behind a wallet-connect gate and returned no useful content during crawl.
  • —No request body schema or response schema is available — the exact fields returned are unknown.
  • —The endpoint path suggests Yearn APY data but no details confirm the scope (which vaults, which chains, etc.).

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-21 18:47:27Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-21
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/x6mCNS
Yearn Finance APY data via x402 micropayment on Base, $0.02 per request. — Clawmart · Clawmart