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Proofwork Base Market Pulse
x402
Proofwork Base Market Pulse is a paid API for AI agents from proofwork-the402-webhook.phase-voice.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Returns a cross-source ETH/USDC market pulse report comparing Base DEX pool prices against Coinbase reference spot prices, including spread percentage and liquidity data.
Price / call$0.01
Success—
StatusUnknown
How this service works
Small non-cyber evidence and data APIs payable per request with x402 on Base.
Output
A JSON report containing the report type identifier, observed timestamp, Base chain ID and latest block number, the signed spread percentage between DEX and reference prices, the WETH/USDC DEX pool price in USD and liquidity in USD, and the Coinbase ETH-USD spot reference price.
Example use cases
Arbitrage spread monitoring on Base
“What's the current price spread between the WETH/USDC pool on Base DEX and Coinbase's ETH-USD spot price right now? I want to know if there's a meaningful arbitrage opportunity.”
DeFi price verification for trading bot
“Fetch me an evidence-grade market pulse report for ETH on Base — I need the DEX pool price, Coinbase reference price, and the signed spread percentage so my trading bot can decide whether to execute.”
On-chain market data audit
“I need a cross-source market data snapshot for Base — give me the latest reported block, the WETH/USDC pool liquidity in USD, and how far the DEX price is from Coinbase's spot price.”
Technical details
Endpoint
GEThttps://proofwork-the402-webhook.phase-voice.workers.dev/v1/base-market-pulseWhen to prefer
Choose this endpoint when you need a low-cost ($0.01), verifiable, evidence-grade snapshot of ETH market conditions on the Base network that cross-references on-chain DEX data with a centralized Coinbase spot price. It is ideal for agents that need cryptographically auditable market data rather than a raw price oracle, or when building on Base and needing both DEX liquidity context and a CEX price anchor in a single call.
Side effects
- Payment not received or insufficient USDC (x402 payment required, $0.01 USDC)
- Base network RPC unavailable or lagging, leading to stale block data
- Coinbase price feed temporarily unavailable, causing incomplete cross-source comparison
- DEX pool data unavailable due to subgraph or indexer downtime
- Rate limiting if payment processing fails repeatedly
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"report": "base_eth_cross_source_market_pulse",
"observed_at": "2026-08-12T00:00:00.000Z",
"base_network": {
"chain_id": 8453,
"market_data_provider": "GeckoTerminal keyless public API"
},
"base_dex_pool": {
"pair": "WETH/USDC",
"price_usd": 4001,
"liquidity_usd": 1000000
},
"coinbase_reference": {
"pair": "ETH-USD",
"spot_usd": 4000
}
}
}Tags
x402
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