Wallet monitoring for agents
Wallet monitoring for agents: watch an EVM address and get only what changed since your last call: native coin and token balance deltas (USDC always included, up to 10 more tokens) and the number of outgoing transactions. Read directly from the blockchain. First call saves a baseline and returns a cursor; pass it on the next call. For treasury and payment tracking, whale and smart-money watching, deposit detection. Chains: base, ethereum, bsc, arbitrum, polygon.
Answeringour last check, 2026-10-10
1 of 1checks answered this week
1044 msmedian answer time
$0.003listed price per call
$0.003price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://agentsvc.io/api/v1/proxy/wallet-watch
| Category | Market data |
|---|---|
| Provider host | agentsvc.io |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 4 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-10 | valid payment request | 402 | $0.003 | 1044 ms |
Example input (from the provider)
{
"body": {
"address": "0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27",
"chain": "base"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"address": {
"description": "EVM address (0x...)",
"type": "string"
},
"chain": {
"default": "base",
"enum": [
"base",
"ethereum",
"bsc",
"arbitrum",
"polygon"
],
"type": "string"
},
"cursor": {
"description": "Cursor from your previous call; omit on the first call",
"type": "string"
},
"min_change_pct": {
"default": 0,
"description": "Only report balance changes of at least this percentage",
"type": "number"
},
"tokens": {
"description": "Extra ERC-20 contracts to track (USDC is always included)",
"items": {
"type": "string"
},
"maxItems": 10,
"type": "array"
}
},
"required": [
"address"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"properties": {
"address": {
"type": "string"
},
"balances": {
"items": {
"properties": {
"asset": {
"type": "string"
},
"balance": {
"type": "string"
},
"contract": {},
"delta": {
"type": "string"
},
"previous": {
"type": "string"
}
},
"type": "object"
},
"type": "array"
},
"chain": {
"type": "string"
},
"changed": {
"type": "boolean"
},
"changes": {
"items": {
"type": "string"
},
"type": "array"
},
"checked_at": {
"type": "string"
},
"cursor": {
"type": "string"
},
"cursor_help": {
"type": "string"
},
"explorer": {
"type": "string"
},
"first_check": {
"type": "boolean"
},
"nonce": {
"type": "integer"
},
"outgoing_tx_since": {
"type": "integer"
},
"since": {
"type": "string"
},
"summary": {
"type": "string"
}
},
"required": [
"changed",
"cursor",
"summary",
"changes"
],
"type": "object"
},
"success": {
"type": "boolean"
}
},
"required": [
"success",
"data"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}