# Octav PRO – Token Approvals by Chain

> Octav PRO – Token Approvals by Chain is a paid API for AI agents from api.octav.fi, paid per call via x402, $0.025/call, status unknown (last checked 2026-09-14).

Retrieves all token approvals granted by a given wallet address on a specified blockchain chain

## Facts

- Endpoint: GET https://api.octav.fi/v1/agent/approvals/%7Bchain%7D
- Price: $0.025/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/octav-pro-token-approvals-by-chain-52a8109f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mzSCbrM_Kj8COtrnjFGny

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability octav-pro-token-approvals-by-chain-52a8109f
```

Example prompt: Show me all the token approvals my wallet 0xAbC123...dEf456 has on Ethereum — I want to see which contracts have permission to spend my tokens so I can audit for risky allowances.

## When to prefer this

Use this endpoint when you need to enumerate token spending permissions (ERC-20 approvals) granted by a specific wallet on a given blockchain, especially for security audits, risk assessments, or pre-revocation reviews in a DeFi context. Prefer this over generic block explorer scraping when you need structured, normalized approval data via a paid API with consistent schema.

## Known failure modes

- Invalid or malformed wallet address returns an error or empty result
- Unsupported chain identifier returns a 400 or 404 error
- Address with no approvals on the chain returns an empty list
- Payment not completed (x402 flow) results in a 402 Payment Required response
- Network or rate-limit issues may cause 5xx errors

## How this service works

Monitor crypto portfolios with automated NAV reports, exposure insights, and AI-powered transaction labeling. Octav Pro helps funds and institutions turn digital-asset complexity into clear, compliant reporting.

## Output

A JSON response listing token approvals associated with the given wallet address on the specified chain, including spender contract addresses, approved token contracts, and approval amounts or limits

## Request schema (JSON Schema)

```json
{
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "queryParams": {
     "type": "object",
     "properties": {
      "chain": {
       "type": "string",
       "description": "The blockchain chain to query approvals for (e.g. eth, polygon, bsc)",
       "required": true
      },
      "addresses": {
       "type": "string",
       "description": "The address of the wallet to get token approvals for",
       "required": true
      },
      "limit": {
       "type": "number",
       "description": "Number of results per page (max 100)",
       "required": false
      },
      "cursor": {
       "type": "string",
       "description": "Pagination cursor for next page",
       "required": false
      }
     },
     "required": [
      "chain",
      "addresses"
     ]
    },
    "method": {
     "type": "string",
     "enum": [
      "GET"
     ]
    },
    "pathParams": {
     "type": "object"
    }
   },
   "required": [
    "method"
   ]
  },
  "output": {
   "properties": {
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/octav-pro-token-approvals-by-chain-52a8109f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.octav.fi](https://www.zero.xyz/host/api.octav.fi/llms.txt)