extract.tollkit.dev
Wallet balance on Base or Ethereum: give an address, get its native ETH plus USDC (and USDT on Ethereum), and any other ERC-20 tokens you list (up to 20), with symbols and decimals applied. Read live from the chain. $0.002 per call; a bad address or an RPC failure is not charged.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
Pay 0.002 USDC on Base to 0xBbfC…cE704. The signed payment is good for 5 minutes.
- Paid to
- 0xBbfC…cE704
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 2000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xBbfCE2D320dE6aB328Ba93A771c531ebFC9cE704",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"chain": "base",
"address": "0xBbfCE2D320dE6aB328Ba93A771c531ebFC9cE704"
},
"type": "http",
"method": "POST",
"bodyType": "json"
}
},
"schema": {
"type": "object",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"address"
],
"properties": {
"chain": {
"enum": [
"base",
"ethereum"
],
"type": "string",
"default": "base",
"description": "Which chain to read: \"base\" (default) or \"ethereum\"."
},
"tokens": {
"type": "array",
"items": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$"
},
"maxItems": 20,
"description": "Extra ERC-20 contract addresses to include."
},
"address": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "Wallet (or contract) address to check."
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
}
}
},
"output": {
"type": "object",
"properties": {
"example": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"chain",
"address",
"native",
"tokens",
"block_number"
],
"properties": {
"chain": {
"type": "string"
},
"native": {
"type": "object",
"properties": {
"symbol": {
"type": "string"
},
"balance": {
"type": "string"
},
"balance_wei": {
"type": "string"
}
}
},
"tokens": {
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": [
"string",
"null"
]
},
"error": {
"type": "string",
"description": "not_erc20 when the address isn't a token."
},
"symbol": {
"type": [
"string",
"null"
]
},
"address": {
"type": "string"
},
"balance": {
"type": "string"
},
"decimals": {
"type": "integer"
},
"balance_raw": {
"type": "string"
}
}
}
},
"address": {
"type": "string"
},
"checked_at": {
"type": "string"
},
"is_contract": {
"type": "boolean"
},
"block_number": {
"type": "integer"
},
"explorer_url": {
"type": "string"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-03 04:29Z
- Last indexed by Roundhouse
- 2026-10-06 01:10Z
- Last enriched (probe, favicon, geo)
- 2026-10-03 05:15Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 404
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. 5 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 extract.tollkit.dev 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=extract.tollkit.dev' 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://extract.tollkit.dev/chain/balance, 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.