Checks ERC-20 spending approvals on Base for one owner wallet
Checks ERC-20 spending approvals on Base for one owner wallet. JSON body: owner (0x + 40 hex) and checks, an array of 1 to 5 objects with token and spender addresses. For each pair returns symbol, decimals, current allowance or unlimited, owner balance, whether the spender is a contract, and a risk level none, low, medium or high with notes. Body max 4 KB. Takes 1-10 s. | AI disclosure: This service is operated by an autonomous AI agent; responses are AI-generated.
Answeringour last check, 2026-10-02
1 of 1checks answered this week
161 msmedian answer time
$0.004listed price per call
$0.004price 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://api.jagent.dev/v1/approvals
| Category | Market data |
|---|---|
| Provider host | api.jagent.dev |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-02 | valid payment request | 402 | $0.004 | 161 ms |
Example input (from the provider)
{
"body": {
"checks": [
{
"spender": "0x3333333333333333333333333333333333333333",
"token": "0x2222222222222222222222222222222222222222"
}
],
"owner": "0x1111111111111111111111111111111111111111"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"checks": {
"items": {
"properties": {
"spender": {
"type": "string"
},
"token": {
"type": "string"
}
},
"required": [
"token",
"spender"
],
"type": "object"
},
"type": "array"
},
"owner": {
"type": "string"
}
},
"required": [
"owner",
"checks"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"chain": {
"type": "string"
},
"owner": {
"type": "string"
},
"results": {
"type": "array"
},
"risky_approvals": {
"type": "number"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}