Agent Mercantile
Inspect one Base ERC-20 owner/token/spender allowance with same-block balance and token metadata plus factual exposure flags. No wallet access, signing, or transaction execution. Call when you need a same-block Base allowance-versus-balance snapshot for one owner/token/spender triple.
DataLiveeip155:8453Exactvia cdp
erc20-allowanceSpender-allowanceToken-approvalAllowance-exposureUnlimited-approval
Calls · 30d
4↓ 11%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$0.55
Verified settled volume
33 settlements proven x402 by their on-chain EIP-3009 marker.
$0.010
Listed price
As published in the catalog. Always read the live 402 before paying.
4
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-09-06 01:15Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xdb7b2b54f80479826222749a2ea73a8acc306e1eThe 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.
0.01USDC≈ $0.01 USD
on Base · exact scheme
Pay 0.01 USDC on Base to 0xdb7b…06e1e. The signed payment is good for 1 minute.
- Paid to
- 0xdb7b…06e1e
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 10000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xdb7b2b54f80479826222749a2ea73a8acc306e1e",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"owner": "0x0000000000000000000000000000000000000001",
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"spender": "0x0000000000000000000000000000000000000002"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"owner": "0x0000000000000000000000000000000000000001",
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"status": "OK",
"machine": "VM02",
"network": "eip155:8453",
"spender": "0x0000000000000000000000000000000000000002",
"evidence": {
"block_number": "12345678",
"same_block_reads": true,
"token_code_present": true
},
"balance_raw": "500000",
"limitations": [
"Base Mainnet only (eip155:8453)."
],
"block_number": "12345678",
"allowance_raw": "1000000",
"token_metadata": {
"symbol": "USDC",
"decimals": 6
},
"balance_adjusted": "0.5",
"allowance_adjusted": "1",
"methodology_version": "allowance-exposure-0.1.0",
"max_uint256_approval": false,
"effectively_unlimited": false,
"allowance_balance_exposure_raw": "500000",
"allowance_covers_current_balance": true,
"allowance_balance_exposure_adjusted": "0.5"
}
},
"description": "Inspect one Base ERC-20 owner/token/spender allowance with same-block balance and token metadata plus factual exposure flags. No wallet access, signing, or transaction execution. Call when you need a same-block Base allowance-versus-balance snapshot for one owner/token/spender triple."
},
"schema": {
"type": "object",
"$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": [
"owner",
"token",
"spender"
],
"properties": {
"owner": {
"type": "string",
"description": "ERC-20 token owner address. 0x-prefixed 20-byte EVM address."
},
"token": {
"type": "string",
"description": "ERC-20 token contract. 0x-prefixed 20-byte EVM address. Zero address is rejected."
},
"spender": {
"type": "string",
"description": "Spender address. 0x-prefixed 20-byte EVM 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": [
"status",
"machine",
"methodology_version",
"network",
"block_number",
"owner",
"token",
"spender",
"token_metadata",
"allowance_raw",
"allowance_adjusted",
"balance_raw",
"balance_adjusted",
"allowance_balance_exposure_raw",
"allowance_balance_exposure_adjusted",
"allowance_covers_current_balance",
"max_uint256_approval",
"effectively_unlimited",
"evidence",
"limitations"
],
"properties": {
"owner": {
"type": "string"
},
"token": {
"type": "string"
},
"status": {
"enum": [
"OK",
"HOLD"
],
"type": "string"
},
"machine": {
"enum": [
"VM02"
],
"type": "string"
},
"network": {
"enum": [
"eip155:8453"
],
"type": "string"
},
"spender": {
"type": "string"
},
"evidence": {
"type": "object",
"properties": {
"block_number": {
"type": [
"string",
"null"
]
},
"same_block_reads": {
"type": "boolean"
},
"token_code_present": {
"type": [
"boolean",
"null"
]
}
}
},
"balance_raw": {
"type": [
"string",
"null"
]
},
"limitations": {
"type": "array",
"items": {
"type": "string"
}
},
"block_number": {
"type": [
"string",
"null"
]
},
"allowance_raw": {
"type": [
"string",
"null"
],
"description": "uint256 as a decimal integer string"
},
"token_metadata": {
"type": "object",
"properties": {
"symbol": {
"type": [
"string",
"null"
]
},
"decimals": {
"type": [
"integer",
"null"
]
}
}
},
"balance_adjusted": {
"type": [
"string",
"null"
]
},
"allowance_adjusted": {
"type": [
"string",
"null"
]
},
"methodology_version": {
"enum": [
"allowance-exposure-0.1.0"
],
"type": "string"
},
"max_uint256_approval": {
"type": "boolean"
},
"effectively_unlimited": {
"type": "boolean"
},
"allowance_balance_exposure_raw": {
"type": [
"string",
"null"
]
},
"allowance_covers_current_balance": {
"type": "boolean"
},
"allowance_balance_exposure_adjusted": {
"type": [
"string",
"null"
]
}
},
"additionalProperties": true
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-06 01:15Z
- Last indexed by Roundhouse
- 2026-09-24 07:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-24 07:45Z
- x402 version
- 2
- Max timeout
- 60s
- 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. 30 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 Agent Mercantile 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=Agent%20Mercantile' 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://api.agentmercantile.com/v1/allowance-exposure, 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.