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Taifoon On-Chain Data Query (Base)
x402
Taifoon On-Chain Data Query (Base) is a paid API for AI agents from coord.taifoon.dev, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-17).
Queries on-chain data on the Base network (chain ID 8453) — either the tokens and fee tier of a Uniswap V3 pool, or the hash of a specific block — with an adversarial grading step that validates the answer before charging.
Price / call$0.03
Success—
StatusUnknown
How this service works
On-chain data query on Base, sold by Taifoon: the tokens and fee tier of a Uniswap V3 pool, or the hash of a block. An admitted data seller answers; Taifoon reads the same facts from the chain and grades the answer before you are charged. A failed answer is not charged. Answer + graded receipt. 0.03 USDC a call.
Output
Returns the answer provided by a data seller (e.g. pool token addresses and fee tier, or block hash), along with a graded receipt confirming Taifoon independently verified the answer against on-chain state. Failed or incorrect answers are not charged. Successful calls cost 0.03 USDC.
Example use cases
Identify tokens in a Uniswap pool
“I found a pool address on Base — 0x6c2a1fC0E5F14Fe2DBd5DfD5bB7d9d70Af1cf15 — can you tell me which two tokens it holds and what the fee tier is? Use a pool_tokens query.”
Retrieve a block hash on Base
“What is the block hash for block number 18500000 on the Base network? Do a block_hash lookup and give me the verified result.”
Verify DeFi pool composition
“I'm building a trading bot and need to confirm what tokens are in a specific Uniswap V3 pool on Base at address 0xd0b53D9277642d899DF5C87A3966A349A798F224 — can you query pool_tokens and return the graded answer?”
Technical details
Endpoint
POSThttps://coord.taifoon.dev/v1/x402/class/data.onchain_query?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need verified, graded on-chain facts about Base network state — specifically Uniswap V3 pool composition (tokens and fee tier) or block hashes — and want to pay only for correct answers. The adversarial grading mechanism makes it more trustworthy than a raw RPC call routed through an unverified third party, and the per-query micropayment model is cost-efficient for spot lookups.
Side effects
- Data seller provides incorrect answer — query is graded as failed, not charged
- Invalid pool address or non-existent block number causes lookup failure
- Unsupported chain ID (only Base / 8453 is supported)
- Missing required fields (question or chainId) returns validation error
- Network or on-chain RPC issues may cause temporary unavailability
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object |
Tags
x402
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