x402 Chain Tools
Blockchain wallet, token, transaction and preflight tools for AI agents.
OtherLiveeip155:8453Exactvia cdp
x402BaseAi-agentsWalleterc20
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 24 snapshots so far.
$0.05
Verified settled volume
40 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0020
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-01 23:20Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xa7e1fe3744E3b6D55237d95cE575cAFe3b8abeCDThe wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
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.
0.002USDC≈ $0.002 USD
on Base · exact scheme
Pay 0.002 USDC on Base to 0xa7e1…abeCD. The signed payment is good for 5 minutes.
- Paid to
- 0xa7e1…abeCD
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 2000 smallest units
2000units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · 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
- 5vX2u7…hzKyM
- Token contract
- EPjFWd…TDt1v
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xa7e1fe3744E3b6D55237d95cE575cAFe3b8abeCD",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
},
"payTo": "5vX2u7mkwhxpvQYNA7SqmauJjkcfnxETQ6tKVZphzKyM",
"amount": "2000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"token": "0x0000000000000000000000000000000000000002",
"amount": "10.5",
"wallet": "0x0000000000000000000000000000000000000001",
"spender": "0x0000000000000000000000000000000000000003"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ok": true,
"ready": false,
"token": "0x0000000000000000000000000000000000000002",
"issues": [
"NO_NATIVE_GAS_BALANCE",
"INSUFFICIENT_TOKEN_BALANCE"
],
"wallet": "0x0000000000000000000000000000000000000001",
"network": "eip155:8453",
"spender": "0x0000000000000000000000000000000000000003",
"allowance": {
"raw": "0",
"formatted": "0",
"unlimited": false,
"sufficient": false
},
"limitations": [
"native gas check only verifies a non-zero ETH balance",
"transaction execution is not simulated"
],
"token_balance": {
"raw": "0",
"formatted": "0",
"sufficient": false
},
"native_balance": {
"eth": "0",
"wei": "0",
"has_native_gas_balance": false
},
"requested_amount": {
"raw": "10500000",
"decimals": 6,
"formatted": "10.5"
},
"spender_is_contract": true
}
}
},
"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": [
"wallet",
"token",
"spender",
"amount"
],
"properties": {
"token": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "ERC-20 token contract address on Base."
},
"amount": {
"type": "string",
"pattern": "^[0-9]+(?:\\.[0-9]+)?$",
"description": "Positive decimal string without scientific notation. Exact fractional precision depends on the token decimals() response."
},
"wallet": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "Base wallet address."
},
"spender": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "Planned spender address."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"ok",
"network",
"wallet",
"token",
"spender",
"requested_amount",
"native_balance",
"token_balance",
"allowance",
"spender_is_contract",
"ready",
"issues",
"limitations"
],
"properties": {
"ok": {
"type": "boolean",
"const": true
},
"ready": {
"type": "boolean"
},
"token": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "Token contract address."
},
"issues": {
"type": "array",
"items": {
"enum": [
"NO_NATIVE_GAS_BALANCE",
"INSUFFICIENT_TOKEN_BALANCE",
"INSUFFICIENT_ALLOWANCE",
"SPENDER_NOT_CONTRACT"
]
}
},
"wallet": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "Wallet address."
},
"network": {
"type": "string",
"const": "eip155:8453"
},
"spender": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "Spender address."
},
"allowance": {
"type": "object",
"required": [
"raw",
"formatted",
"unlimited",
"sufficient"
],
"properties": {
"raw": {
"type": "string",
"pattern": "^[0-9]+$"
},
"formatted": {
"type": "string",
"pattern": "^[0-9]+(?:\\.[0-9]+)?$"
},
"unlimited": {
"type": "boolean"
},
"sufficient": {
"type": "boolean"
}
},
"additionalProperties": false
},
"limitations": {
"type": "array",
"maxItems": 2,
"minItems": 2,
"prefixItems": [
{
"const": "native gas check only verifies a non-zero ETH balance"
},
{
"const": "transaction execution is not simulated"
}
]
},
"token_balance": {
"type": "object",
"required": [
"raw",
"formatted",
"sufficient"
],
"properties": {
"raw": {
"type": "string",
"pattern": "^[0-9]+$"
},
"formatted": {
"type": "string",
"pattern": "^[0-9]+(?:\\.[0-9]+)?$"
},
"sufficient": {
"type": "boolean"
}
},
"additionalProperties": false
},
"native_balance": {
"type": "object",
"required": [
"wei",
"eth",
"has_native_gas_balance"
],
"properties": {
"eth": {
"type": "string",
"pattern": "^[0-9]+(?:\\.[0-9]+)?$"
},
"wei": {
"type": "string",
"pattern": "^[0-9]+$"
},
"has_native_gas_balance": {
"type": "boolean"
}
},
"additionalProperties": false
},
"requested_amount": {
"type": "object",
"required": [
"formatted",
"raw",
"decimals"
],
"properties": {
"raw": {
"type": "string",
"pattern": "^[0-9]+$"
},
"decimals": {
"type": "integer",
"maximum": 255,
"minimum": 0
},
"formatted": {
"type": "string",
"pattern": "^[0-9]+(?:\\.[0-9]+)?$"
}
},
"additionalProperties": false
},
"spender_is_contract": {
"type": "boolean"
}
},
"additionalProperties": false
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-01 23:20Z
- Last indexed by Roundhouse
- 2026-09-25 17:30Z
- Last enriched (probe, favicon, geo)
- 2026-09-24 23:45Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 405
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. 24 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 x402 Chain Tools 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=x402%20Chain%20Tools' 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://blockchain-api.x402-chain-tools.workers.dev/chain/wallet-preflight, 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. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.