# Whatagentsbuy MCP server

Source: https://glimind.com/server/mcp-registry%2Fcom.whatagentsbuy%2Fwhatagentsbuy
Registry id: `mcp-registry/com.whatagentsbuy/whatagentsbuy`
Status: live (checked 2026-10-26T18:48:56.441Z)

## Measurements (30 days)

- Uptime: 99.97%
- Checks: 4942
- Outages (90 days): 2

## Install

```json
{
  "mcpServers": {
    "whatagentsbuy-mcp-server": {
      "type": "http",
      "url": "https://whatagentsbuy.com/mcp"
    }
  }
}
```

Claude Code:

```sh
claude mcp add --transport http whatagentsbuy-mcp-server https://whatagentsbuy.com/mcp
```

## Tools (7)

- `check_before_paying`: USE WHEN your agent is about to pay an x402 API and you want to know if it is safe and worth it. Returns one verdict for a URL or host in the `verdict` field (g
- `find_api`: USE WHEN you need an API that does something and want payable options. Searches the whole x402 market for what you describe and returns a ranked, pre-vetted sho
- `known_payment_traps`: USE WHEN writing payment code, or before trusting an unfamiliar seller. The field notes: each is a specific way an agent paying an API loses money or is misled,
- `look_up_seller`: USE WHEN you have a specific seller host and want its full track record. Returns every grade earned by actually paying it, what was quoted versus charged, wheth
- `market_size`: USE WHEN asked how big x402 is, whether it is growing, or what settled recently. Returns both what actually settled on Base over the last day (from chain logs, 
- `rank_by_accuracy`: USE WHEN a category has an objective right answer (crypto-price, stock-price, fx-rate, gas-price, wallet-balance, weather) and you want the sellers we PAID rank
- `rank_sellers`: USE WHEN you want a ranked list of sellers across the market. by='revenue' ranks by raw USDC received (who is busy); by='real_demand' ranks by Organic Demand Sc

Measured by Glimind (https://glimind.com): MCP handshake + tool list only, no tool is ever called. CC BY 4.0.