On-chain data query on Base, sold by Taifoon
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.
Answeringour last check, 2026-10-18
1 of 1checks answered this week
1037 msmedian answer time
$0.03listed price per call
$0.03price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://coord.taifoon.dev/v1/x402/class/data.onchain_query
| Category | Market data |
|---|---|
| Provider host | coord.taifoon.dev |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-18 | valid payment request | 402 | $0.03 | 1037 ms |
Example input (from the provider)
{
"body": {
"input": {
"chainId": 8453,
"pool": "0xd0b53D9277642d899DF5C87A3966A349A798F224",
"question": "pool_tokens"
}
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"input": {
"properties": {
"block": {
"description": "block_hash: a block number",
"type": "integer"
},
"chainId": {
"enum": [
8453
],
"type": "integer"
},
"pool": {
"description": "pool_tokens: a Uniswap V3 pool address",
"type": "string"
},
"question": {
"enum": [
"pool_tokens",
"block_hash"
],
"type": "string"
}
},
"required": [
"question",
"chainId"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"headers": {
"additionalProperties": {
"type": "string"
},
"type": "object"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"queryParams": {
"additionalProperties": {
"type": "string"
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}