# AgentsMap x402 Top Sellers on Base

> AgentsMap x402 Top Sellers on Base is a paid API for AI agents from agentsmap.io, paid per call via x402, $0.005/call, status unknown (last checked 2026-11-02).

Returns the top x402 sellers on Base ranked by paid call volume, unique payers, and USDC revenue over a chosen time window (1h, 8h, 24h, 7d, or 30d).

## Facts

- Endpoint: GET https://agentsmap.io/semilla/x402/market/top?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentsmap-x402-top-sellers-on-base-4059188d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_B2msMRAvhANHY6000E10B

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 agentsmap-x402-top-sellers-on-base-4059188d
```

Example prompt: Show me the top 10 x402 sellers on Base from the last 24 hours — I want to see which ones have the most paid calls, how many unique payers they have, and their total USDC volume.

## When to prefer this

Use this endpoint when you need to discover which x402 services are most actively used on Base, benchmark an operator against market leaders, or monitor market trends across different time horizons. It is the only AgentsMap endpoint providing a ranked leaderboard of x402 sellers by payment activity and USDC revenue.

## Known failure modes

- Invalid window value returns an error (must be one of: 1h, 8h, 24h, 7d, 30d)
- limit parameter outside 0-99 range rejected by pattern validation
- No data available for very short windows (1h) if index hasn't updated
- Payment required (402) if USDC payment not attached to the request
- Empty result set if no x402 activity recorded in the selected window

## How this service works

AgentsMap tracks live x402 and ACP activity across Base and Solana with an indexable public surface plus a live map, discovery explorer, and charts.

## Output

A ranked list of x402 seller endpoints on Base, each with their payment count, number of unique payers, and total USDC volume earned within the selected time window. Results cover the top N sellers (configurable via limit) for the requested window (1h, 8h, 24h, 7d, or 30d).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "limit": {
       "type": "string",
       "pattern": "^[0-9]{1,2}$"
      },
      "window": {
       "enum": [
        "1h",
        "8h",
        "24h",
        "7d",
        "30d"
       ],
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "window": "24h",
  "sellers": [
   {
    "name": "Blockrun",
    "payments": 3156,
    "volume_usdc": "41.22",
    "unique_payers": 58
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentsmap-x402-top-sellers-on-base-4059188d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentsmap.io](https://www.zero.xyz/host/agentsmap.io/llms.txt)