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HALOWERK defiwerk Oracle Crosscheck
x402
HALOWERK defiwerk Oracle Crosscheck is a paid API for AI agents from defi.netzhandwerker.de, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-14).
Aggregates and cross-checks crypto asset prices from multiple oracle sources (Chainlink, Pyth, RedStone, CEX, DEX spot/TWAP) across major EVM chains
Price / call$0.004
Success—
StatusUnknown
How this service works
HALOWERK defiwerk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.
Output
Returns price readings for the requested asset from multiple oracle sources (e.g. Chainlink, Pyth, RedStone, CEX reference price, DEX spot, DEX TWAP) on the specified chain, allowing comparison and cross-validation of price data across sources.
Example use cases
Oracle divergence detection for DeFi protocol
“Check whether Chainlink and Pyth agree on the current BTC price on Ethereum right now — flag any significant divergence between them.”
Pre-trade price sanity check
“Before I execute a large LINK trade, can you pull the DEX spot and DEX TWAP prices for LINK on Arbitrum and compare them against the Chainlink feed to make sure nothing looks off?”
Multi-chain oracle audit for stablecoin
“Fetch the DAI price from all available oracle sources on Base and Polygon so I can verify the peg is holding consistently across both chains.”
Technical details
Endpoint
POSThttps://defi.netzhandwerker.de/oracle/crosscheckWhen to prefer
Use this endpoint when you need to cross-validate crypto asset prices across multiple oracle sources rather than trusting a single feed. Ideal for DeFi risk management, arbitrage detection, oracle manipulation checks, and pre-trade sanity checks. Prefer this over single-oracle price feeds when price integrity and multi-source consensus matter. Best suited for Base, Ethereum, Arbitrum, Optimism, and Polygon for the supported assets (ETH, BTC, USDC, USDT, DAI, LINK, CBETH, AERO).
Side effects
- Asset not supported on the specified chain — returns error indicating unavailability
- Oracle source type not available for the given asset/chain combination
- Payment failure via x402 — endpoint returns 402 if USDC payment on Base Mainnet is not provided or insufficient
- Invalid asset or chain enum value — request rejected with validation error
- Network or RPC issues causing on-chain source reads to fail
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| asset | string | Asset symbol. Only assets whose sources were individually verified against the chain are available. |
| chain | string | Chain the on-chain sources are read from. Off-chain sources are chain independent. |
| oracles | array | Optional filter for source types. Omitted means all available types. |
Tags
x402
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