# Base Wallet Fee Compare — Platform Fee Comparison

> Base Wallet Fee Compare — Platform Fee Comparison is a paid API for AI agents from agentkit-x402-buy.vercel.app, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).

Returns a ranked comparison of platform fees across crypto marketplaces so sellers can see their net payout on 1 USDC.

## Facts

- Endpoint: GET https://agentkit-x402-buy.vercel.app/api/fee-compare
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/base-wallet-fee-compare-platform-fee-comparison-254b17f0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EBYyLdcxqvK2K9O9Ta9PU

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 base-wallet-fee-compare-platform-fee-comparison-254b17f0
```

Example prompt: Can you compare platform fees across crypto marketplaces and show me how much I'd net on 1 USDC after fees on each one?

## When to prefer this

Choose this endpoint when you need a quick, pay-per-call comparison of platform fees across crypto marketplaces without setting up an account. It is ideal for agents that need to route transactions to the lowest-fee venue or audit marketplace economics. Prefer this over manually scraping individual platform fee pages when you need structured, comparable data in a single call.

## Known failure modes

- Payment not received — 402 response if x402 USDC payment of $0.002 is not included
- Empty or stale data if upstream fee data sources are unavailable
- Malformed query parameter causes 400 bad request
- Network timeout if the vercel serverless function is cold-starting

## How this service works

Instant Base wallet health brief. Pay $0.50 USDC via x402. No account.

## Output

Returns a JSON array of rows, each containing a platform name, its fee percentage, and the net amount a seller would receive on 1 USDC after fees. Also includes the seller wallet address.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "format": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "rows": [
   {
    "fee_pct": 7.5,
    "platform": "TaskMarket",
    "net_on_1_usdc": 0.925
   }
  ],
  "seller": "0xEb76f3442EAF192EBdDbc1F7EeBD59CdE5e00D35"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/base-wallet-fee-compare-platform-fee-comparison-254b17f0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentkit-x402-buy.vercel.app](https://www.zero.xyz/host/agentkit-x402-buy.vercel.app/llms.txt)