Grokzilla x402 Micro Pay
Read ERC-20 name, symbol, decimals, totalSupply (and optional holder balanceOf) via multicall3 on Base or Ethereum. 400 if the address is not a contract.
DataLiveeip155:8453Exactvia cdp
erc20TokenBalanceMetadataBase
Settlements · 30d
142↓ 62%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$2.27
Verified settled volume
122 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0020
Listed price
As published in the catalog. Always read the live 402 before paying.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-10-24 23:15Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xc22f9CAEBAc37fE72D5142f35f21f6696Ea9Ef69The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "Payment required",
"usage": {
"docs": "https://grokzilla.shop/docs/erc20-meta",
"note": "GET only shows usage and payment terms; it never runs the skill. POST the body, get 402, then retry the POST with PAYMENT-SIGNATURE.",
"method": "POST",
"endpoint": "/api/skills/erc20-meta",
"body_schema": {
"type": "object",
"required": [
"token"
],
"properties": {
"chain": {
"enum": [
"base",
"ethereum"
],
"type": "string",
"default": "base"
},
"token": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "ERC-20 contract address"
},
"holder": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "Optional holder for balanceOf"
},
"request_id": {
"type": "string",
"pattern": "^[A-Za-z0-9._:-]+$",
"maxLength": 64,
"minLength": 1,
"description": "Optional idempotency key. Echoed back; a credit-pack redemption with the same request_id and body is charged once."
}
},
"additionalProperties": false
},
"content_type": "application/json",
"example_body": {
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
}
},
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc22f9CAEBAc37fE72D5142f35f21f6696Ea9Ef69",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://grokzilla.shop/api/skills/erc20-meta",
"tags": [
"erc20",
"token",
"balance",
"metadata",
"base"
],
"iconUrl": "https://grokzilla.shop/favicon.ico",
"mimeType": "application/json",
"description": "Read ERC-20 name, symbol, decimals, totalSupply (and optional holder balanceOf) via multicall3 on Base or Ethereum. 400 if the address is not a contract.",
"serviceName": "Grokzilla x402 Micro Pay"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ok": true,
"data": {
"name": "USD Coin",
"block": 22000000,
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"symbol": "USDC",
"chain_id": 8453,
"decimals": 6,
"is_contract": true,
"total_supply": "1000000000000000",
"holder_balance": null,
"total_supply_fmt": "1000000000",
"holder_balance_fmt": null
},
"next": [
"token_price",
"token_risk"
],
"skill": "erc20_meta",
"charged": true,
"service": "erc20_meta",
"sources": [
{
"url": "https://basescan.org/address/0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"name": "base eth_call/multicall3",
"block": 22000000,
"fetched_at": "2026-10-24T14:00:00Z"
}
],
"summary": "USDC decimals=6 supply=…",
"version": "1.0.0",
"warnings": [],
"confidence": 0.95,
"data_as_of": "2026-10-24T14:00:00Z",
"generated_at": "2026-10-24T14:00:00Z"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"token"
],
"properties": {
"chain": {
"enum": [
"base",
"ethereum"
],
"type": "string",
"default": "base"
},
"token": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "ERC-20 contract address"
},
"holder": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "Optional holder for balanceOf"
},
"request_id": {
"type": "string",
"pattern": "^[A-Za-z0-9._:-]+$",
"maxLength": 64,
"minLength": 1,
"description": "Optional idempotency key. Echoed back; a credit-pack redemption with the same request_id and body is charged once."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"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",
"skill"
],
"properties": {
"ok": {
"type": "boolean"
},
"data": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"block": {
"type": "integer"
},
"token": {
"type": "string"
},
"symbol": {
"type": "string"
},
"chain_id": {
"type": "integer"
},
"decimals": {
"type": "integer"
},
"is_contract": {
"type": "boolean"
},
"total_supply": {
"type": "string"
},
"holder_balance": {
"type": "null"
},
"total_supply_fmt": {
"type": "string"
},
"holder_balance_fmt": {
"type": "null"
}
}
},
"next": {
"type": "array",
"items": {
"type": "string"
}
},
"skill": {
"type": "string"
},
"charged": {
"type": "boolean"
},
"service": {
"type": "string"
},
"sources": {
"type": "array",
"items": {
"type": "object",
"properties": {
"url": {
"type": "string"
},
"name": {
"type": "string"
},
"block": {
"type": "integer"
},
"fetched_at": {
"type": "string"
}
}
}
},
"summary": {
"type": "string"
},
"version": {
"type": "string"
},
"warnings": {
"type": "array"
},
"confidence": {
"type": "number"
},
"data_as_of": {
"type": "string"
},
"generated_at": {
"type": "string"
}
}
}
}
}
}
}
}
},
"x402Version": 2
}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≈ $0.002 USD
on Base · exact scheme
Pay 0.002 USDC on Base to 0xc22f…9Ef69. The signed payment is good for 5 minutes.
- Paid to
- 0xc22f…9Ef69
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 2000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc22f9CAEBAc37fE72D5142f35f21f6696Ea9Ef69",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ok": true,
"data": {
"name": "USD Coin",
"block": 22000000,
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"symbol": "USDC",
"chain_id": 8453,
"decimals": 6,
"is_contract": true,
"total_supply": "1000000000000000",
"holder_balance": null,
"total_supply_fmt": "1000000000",
"holder_balance_fmt": null
},
"next": [
"token_price",
"token_risk"
],
"skill": "erc20_meta",
"charged": true,
"service": "erc20_meta",
"sources": [
{
"url": "https://basescan.org/address/0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"name": "base eth_call/multicall3",
"block": 22000000,
"fetched_at": "2026-10-24T14:00:00Z"
}
],
"summary": "USDC decimals=6 supply=…",
"version": "1.0.0",
"warnings": [],
"confidence": 0.95,
"data_as_of": "2026-10-24T14:00:00Z",
"generated_at": "2026-10-24T14:00:00Z"
}
}
},
"schema": {
"type": "object",
"$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": [
"token"
],
"properties": {
"chain": {
"enum": [
"base",
"ethereum"
],
"type": "string",
"default": "base"
},
"token": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "ERC-20 contract address"
},
"holder": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "Optional holder for balanceOf"
},
"request_id": {
"type": "string",
"pattern": "^[A-Za-z0-9._:-]+$",
"maxLength": 64,
"minLength": 1,
"description": "Optional idempotency key. Echoed back; a credit-pack redemption with the same request_id and body is charged once."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"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",
"skill"
],
"properties": {
"ok": {
"type": "boolean"
},
"data": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"block": {
"type": "integer"
},
"token": {
"type": "string"
},
"symbol": {
"type": "string"
},
"chain_id": {
"type": "integer"
},
"decimals": {
"type": "integer"
},
"is_contract": {
"type": "boolean"
},
"total_supply": {
"type": "string"
},
"holder_balance": {
"type": "null"
},
"total_supply_fmt": {
"type": "string"
},
"holder_balance_fmt": {
"type": "null"
}
}
},
"next": {
"type": "array",
"items": {
"type": "string"
}
},
"skill": {
"type": "string"
},
"charged": {
"type": "boolean"
},
"service": {
"type": "string"
},
"sources": {
"type": "array",
"items": {
"type": "object",
"properties": {
"url": {
"type": "string"
},
"name": {
"type": "string"
},
"block": {
"type": "integer"
},
"fetched_at": {
"type": "string"
}
}
}
},
"summary": {
"type": "string"
},
"version": {
"type": "string"
},
"warnings": {
"type": "array"
},
"confidence": {
"type": "number"
},
"data_as_of": {
"type": "string"
},
"generated_at": {
"type": "string"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-24 23:15Z
- Last indexed by Roundhouse
- 2026-10-26 20:00Z
- Last enriched (probe, favicon, geo)
- 2026-10-24 22:16Z
- x402 version
- 2
- 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
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service Grokzilla x402 Micro Pay 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=Grokzilla%20x402%20Micro%20Pay' 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://grokzilla.shop/api/skills/erc20-meta, 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.