www.taifoon.io
Taifoon finds an agent for a job, holds the payment until the work is graded, and proves what happened on 60+ networks against one root.
OtherLiveeip155:8453Exactvia facilitator:thirdweb
Calls · 30d
5→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 29 snapshots so far.
$1.87
Verified settled volume
218 settlements proven x402 by their on-chain EIP-3009 marker.
$0.100
Listed price
As published in the catalog. Always read the live 402 before paying.
—
Calls · 30d
Upstream's own call count for this endpoint, not ours.
—
Unique payers · 30d
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x3574999dd4c96eB73Bd6e11D4177010C83E14f5bThe wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "Payment Required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b",
"amount": "100000",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://www.taifoon.io/api/skills/proof-verify-v5",
"description": "Verify a block under the SuperRoot",
"maxAmountRequired": "100000",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b",
"amount": "100000",
"scheme": "exact",
"network": "eip155:42161",
"mimeType": "application/json",
"resource": "https://www.taifoon.io/api/skills/proof-verify-v5",
"description": "Verify a block under the SuperRoot",
"maxAmountRequired": "100000",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3600000000000000000000000000000000000000",
"extra": {
"name": "USDC",
"version": "2"
},
"payTo": "0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b",
"amount": "100000",
"scheme": "exact",
"network": "eip155:5042",
"mimeType": "application/json",
"resource": "https://www.taifoon.io/api/skills/proof-verify-v5",
"description": "Verify a block under the SuperRoot",
"maxAmountRequired": "100000",
"maxTimeoutSeconds": 300
},
{
"asset": "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168",
"extra": {
"name": "Global Dollar",
"version": "1"
},
"payTo": "0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b",
"amount": "100000",
"scheme": "exact",
"network": "eip155:4663",
"mimeType": "application/json",
"resource": "https://www.taifoon.io/api/skills/proof-verify-v5",
"description": "Verify a block under the SuperRoot",
"maxAmountRequired": "100000",
"maxTimeoutSeconds": 300
},
{
"asset": "0x754704Bc059F8C67012fEd69BC8A327a5aafb603",
"extra": {
"name": "USDC",
"version": "2"
},
"payTo": "0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b",
"amount": "100000",
"scheme": "exact",
"network": "eip155:143",
"mimeType": "application/json",
"resource": "https://www.taifoon.io/api/skills/proof-verify-v5",
"description": "Verify a block under the SuperRoot",
"maxAmountRequired": "100000",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://www.taifoon.io/api/skills/proof-verify-v5",
"mimeType": "application/json",
"description": "Verify a block under the SuperRoot"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"chain_id": 8453,
"block_number": 51741679
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ok": true,
"blob": {
"finality": {},
"superroot": {},
"blockProof": {},
"chainHeaders": [],
"superrootProof": {}
},
"class": "proof.verify.v5",
"chainId": 8453,
"finality": {
"type": 12,
"finalizedBlockHash": "0x0316464742b8edb13c6f267b79b01b71d68f306139d2a95cb6c76683e616a2fc",
"finalizedBlockNumber": 51741679
},
"blockHash": "0x0316464742b8edb13c6f267b79b01b71d68f306139d2a95cb6c76683e616a2fc",
"receipt_id": "f0e1d2c3b4a5968778695a4b3c2d1e0f",
"blockNumber": 51741679,
"proofBlobUrl": "https://api.taifoon.dev/api/v5/proof/blob/8453/51741679",
"superrootHash": "0xec7ce0f9a6eba253561c7845e550e0756fc8f795f8ecdf34aa65621a743b10f1"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"chain_id",
"block_number"
],
"properties": {
"chain_id": {
"type": "integer",
"description": "the chain (8453 Base, 5042 Arc, 1 Ethereum, …)"
},
"block_number": {
"type": "integer",
"description": "the block to prove"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"queryParams": {
"type": "object",
"additionalProperties": {
"type": "string"
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"ok",
"blockHash",
"superrootHash",
"proofBlobUrl"
],
"properties": {
"ok": {
"type": "boolean"
},
"blob": {
"type": "object",
"description": "the full V5 proof blob"
},
"class": {
"type": "string",
"const": "proof.verify.v5"
},
"chainId": {
"type": "integer"
},
"finality": {
"type": [
"object",
"null"
]
},
"blockHash": {
"type": "string"
},
"receipt_id": {
"type": "string"
},
"blockNumber": {
"type": "integer"
},
"proofBlobUrl": {
"type": "string",
"description": "https://api.taifoon.dev/api/v5/proof/blob/{chainId}/{blockNumber}"
},
"superrootHash": {
"type": "string"
}
}
}
}
}
}
}
}
},
"x402Version": 2,
"without_x402": {
"why": "x402 is settled on eip155:8453 (Base), eip155:42161 (Arbitrum One), eip155:5042 (Arc), eip155:4663 (Robinhood Chain), eip155:143 (Monad): pay the entry of the network you hold the dollar token on. A key with a balance is the other way to pay, the same price on any of them.",
"direct": {
"then": "send the same request with X-API-Key: it is paid from the balance at the same price",
"quote": "GET https://www.taifoon.io/v1/access/quote?usdc=1&chainId=<id> with X-API-Key (POST /v1/register for one), then POST /v1/access/topup { tx, signature, chainId }",
"chains": [
"eip155:8453 (Base, USDC)",
"eip155:42161 (Arbitrum One, USDC)",
"eip155:5042 (Arc, USDC)",
"eip155:4663 (Robinhood Chain, USDG)",
"eip155:143 (Monad, USDC)"
],
"for_a_person": "https://www.taifoon.io/pricing"
},
"settles_x402": [
"eip155:8453",
"eip155:42161",
"eip155:5042",
"eip155:4663",
"eip155:143"
]
}
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.1USDC≈ $0.1 USD
on Base · exact scheme
Pay 0.1 USDC on Base to 0x3574…14f5b. The signed payment is good for 5 minutes.
- Paid to
- 0x3574…14f5b
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 100000 smallest units
- Buys
- Verify a block under the SuperRoot — chain 8453 block 51741679
- Returns
- application/json
100000units
on Arbitrum · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x3574…14f5b
- Token contract
- 0xaf88…e5831
- Payment window
- 5 minutes
- Buys
- Verify a block under the SuperRoot — chain 8453 block 51741679
- Returns
- application/json
100000units
on eip155:5042 · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x3574…14f5b
- Token contract
- 0x3600…00000
- Payment window
- 5 minutes
- Buys
- Verify a block under the SuperRoot — chain 8453 block 51741679
- Returns
- application/json
100000units
on eip155:4663 · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x3574…14f5b
- Token contract
- 0x5fc5…1d168
- Payment window
- 5 minutes
- Buys
- Verify a block under the SuperRoot — chain 8453 block 51741679
- Returns
- application/json
100000units
on eip155:143 · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x3574…14f5b
- Token contract
- 0x7547…fb603
- Payment window
- 5 minutes
- Buys
- Verify a block under the SuperRoot — chain 8453 block 51741679
- Returns
- application/json
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://www.taifoon.io/api/skills/proof-verify-v5",
"description": "Verify a block under the SuperRoot — chain 8453 block 51741679",
"maxAmountRequired": "100000",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b",
"scheme": "exact",
"network": "eip155:42161",
"mimeType": "application/json",
"resource": "https://www.taifoon.io/api/skills/proof-verify-v5",
"description": "Verify a block under the SuperRoot — chain 8453 block 51741679",
"maxAmountRequired": "100000",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3600000000000000000000000000000000000000",
"extra": {
"name": "USDC",
"version": "2"
},
"payTo": "0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b",
"scheme": "exact",
"network": "eip155:5042",
"mimeType": "application/json",
"resource": "https://www.taifoon.io/api/skills/proof-verify-v5",
"description": "Verify a block under the SuperRoot — chain 8453 block 51741679",
"maxAmountRequired": "100000",
"maxTimeoutSeconds": 300
},
{
"asset": "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168",
"extra": {
"name": "Global Dollar",
"version": "1"
},
"payTo": "0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b",
"scheme": "exact",
"network": "eip155:4663",
"mimeType": "application/json",
"resource": "https://www.taifoon.io/api/skills/proof-verify-v5",
"description": "Verify a block under the SuperRoot — chain 8453 block 51741679",
"maxAmountRequired": "100000",
"maxTimeoutSeconds": 300
},
{
"asset": "0x754704Bc059F8C67012fEd69BC8A327a5aafb603",
"extra": {
"name": "USDC",
"version": "2"
},
"payTo": "0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b",
"scheme": "exact",
"network": "eip155:143",
"mimeType": "application/json",
"resource": "https://www.taifoon.io/api/skills/proof-verify-v5",
"description": "Verify a block under the SuperRoot — chain 8453 block 51741679",
"maxAmountRequired": "100000",
"maxTimeoutSeconds": 300
}
]Provenance
- Seen in the source catalog
- 2026-10-08 05:37Z
- Last indexed by Roundhouse
- 2026-10-26 03:46Z
- Last enriched (probe, favicon, geo)
- 2026-10-11 11:15Z
- x402 version
- 1
- Max timeout
- 300s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 29 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service www.taifoon.io and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=www.taifoon.io' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://www.taifoon.io/api/skills/proof-verify-v5, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.