API Tools

whatagentsbuy.com

A marketplace intelligence tool for x402 APIs, grading sellers and helping find vetted, payable services.

1 endpoint8 known toolsFirst detected August 18, 2026Last detected August 18, 2026

ENDPOINT 1

https://whatagentsbuy.com/mcp

No auth detected

MCP server metadata

Name: whatagentsbuy
Version: 1.0.0

Capabilities

tools

Server instructions

Independent measurements of x402 API sellers. Grades come from actually paying each service and recording what happened; nothing is sponsored. Call preflight(url) before letting an agent pay an unfamiliar API: it returns one CLEAR / HOLD / ABORT verdict to gate on (pass detail:true for the full payment-safety read). Use find_api to discover a payable API for a task, most_accurate to rank a category by how close its sellers' returned values are to a primary source, and list_traps before writing payment code. Whatever preflight says, always read the payTo and amount from the live 402 and sign against those.

Known tools 8

get_service

Everything known about one x402 seller by host: every grade earned by actually paying it, what was quoted versus what was charged, whether goods arrived, plus its settlement volume and Organic Demand Score.

Inferred read-only

search_services

Search the graded ledger by hostname, behaviour graded, or words in the finding's title.

Inferred read-only

top_services

Rank sellers by money received or by Organic Demand Score.

Inferred read-only

list_traps

The field notes: each is a specific way an agent paying an API loses money or is misled, what it cost to learn, and what to do instead.

Inferred read-only

find_api

Search the whole payable market for an API that does what you need, and get a ranked, pre-vetted shortlist you can actually pay.

Potential side effects

most_accurate

For a category with an objective ground truth (crypto-price, stock-price, fx-rate, gas-price, wallet-balance, weather), the sellers we PAID ranked by how close their returned value was to a primary source that cannot be a reseller (exchange median, chain balanceOf, ECB rates, FMP quote).

Inferred read-only

preflight

The single call to make before your agent pays an unfamiliar x402 API, the check it runs before the 402.

Inferred read-only

market_summary

What actually settled on Base in the last day: total USDC, number of payments, services tracked, and the date of the tape.

Inferred read-only

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.whatagentsbuy]
url = "https://whatagentsbuy.com/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "whatagentsbuy": {
      "type": "http",
      "url": "https://whatagentsbuy.com/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: whatagentsbuy
Remote MCP URL: https://whatagentsbuy.com/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "whatagentsbuy": {
      "url": "https://whatagentsbuy.com/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "whatagentsbuy": {
      "type": "http",
      "url": "https://whatagentsbuy.com/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "whatagentsbuy",
  "transport": "streamable-http",
  "url": "https://whatagentsbuy.com/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

TRUST AND VERIFICATION EVIDENCE

Loading Trust v2 evidence…

Checking the associated registrable domain. The BuiltWith key remains server-side.

Indexed

Evidence is source-attributed and does not guarantee that a third-party server is safe. Risk labels are conservative metadata heuristics.