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Halowerk Markt Token Price Lookup
x402
Halowerk Markt Token Price Lookup is a paid API for AI agents from markt.halowerk.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Returns the USD price, decimals, symbol, and raw confidence score for a token identified by chain key plus contract address, or by a globally unambiguous symbol, with null passed through where the source omits confidence.
Price / call$0.002
Success—
StatusUnknown
How this service works
Takes a chain key and a contract address, or one of a short list of globally unambiguous symbols. A symbol that is not on that list is refused with 400 and a pointer to the address rather than resolved to a guess: the same ticker exists on every chain, and the imitations carry it deliberately. price_usd, decimals and symbol come from the source as they are. confidence is passed through unsmoothed, and this is the point of the endpoint: where the source omits the field, the answer carries null an
Output
A JSON object containing price_usd (float or null), decimals (integer), symbol (string), and confidence (float or null where the source omits it), sourced directly from the price oracle without smoothing or interpolation.
Example use cases
DeFi portfolio USD valuation
“I need the USD price and decimals for the token at 0x6B175474E89094C44Da98b954EedeAC495271d0F on Ethereum — I want the raw confidence score too so I know how reliable the price is.”
Cross-chain token price verification
“Look up the USD price for the token at contract 0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174 on Polygon — give me the symbol, price_usd, and whatever confidence value the source has, even if it's null.”
Unambiguous symbol price fetch
“What is the current USD price and confidence score for ETH? I want the raw unsmoothed number, not a smoothed estimate.”
Technical details
Endpoint
POSThttps://markt.halowerk.com/tokenWhen to prefer
Choose this endpoint when you need a token price by exact contract address and chain key, or for a small set of globally unambiguous symbols (ETH, BTC, etc.), and you specifically need the raw unsmoothed confidence score passed through from the source — including null where the source omits it. Prefer this over exchange ticker endpoints when dealing with ERC-20 or cross-chain tokens that are not listed on centralized exchanges, or when you need decimals for on-chain math.
Side effects
- 400 returned if a symbol is ambiguous or not on the globally-unambiguous allowlist — response includes a pointer to use contract address instead
- 400 or error if chain key is invalid or unrecognized
- null returned for confidence field if the underlying source does not provide it
- contract address not found on specified chain returns an error or empty result
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chain | string | Chain key of the source, for example ethereum, base, arbitrum, optimism, polygon, bsc. Required together with address. |
| symbol | string | Alternative to address, only for globally unambiguous symbols: BTC, ETH, SOL, BNB, XRP, ADA, AVAX, DOT, MATIC, LINK, UNI, AAVE, DOGE, LTC, ATOM. Anything else is refused with 400. |
| address | string | Contract address of the token. EVM address as 0x with 40 hex digits, or the mint address on non EVM chains. |
Tags
x402
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