Ref Tools Ref Tools MCP vs X402 Bazaar Listing Monitor
A side-by-side look at the Ref Tools Ref Tools MCP and X402 Bazaar Listing Monitor MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Ref Tools Ref Tools MCP for finance & fintech work as a local process; choose X402 Bazaar Listing Monitor for finance & fintech over a hosted endpoint. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose Ref Tools Ref Tools MCP when
- You need dedicated capabilities in the Finance & Fintech domain.
- You prefer a local stdio subprocess transport.
- You have the keys it needs:
REF_API_KEY. - You want tools like
query, url.
Choose X402 Bazaar Listing Monitor when
- You need dedicated capabilities in the Finance & Fintech domain.
- You prefer a remote HTTP/SSE transport.
- You want tools like
check_listing_health.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Finance & Fintech | Finance & Fintech |
| Quality signal | 63/100 · Good | 53/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Remote HTTP/SSE |
| Auth | Not declared | Not declared |
| Pricing | Not declared | Not declared |
| Required env vars | REF_API_KEY | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | 1,183 | 1 |
| Directory activity | 2 views 0 installs 0 upvotes | 1 views 0 installs 0 upvotes |
| Tools | 2 | 1 |
| Full listing | View Ref Tools Ref Tools MCP | View X402 Bazaar Listing Monitor |
Tools & capabilities
Ref Tools Ref Tools MCP tools 2
queryurl
X402 Bazaar Listing Monitor tools 1
check_listing_healthChecks whether a seller's x402 Bazaar resources are currently listed under the given payTo address in the public discovery catalog. Flags each resource as listed or missing — the same per-seller diff the registered poller runs on a schedule, run once on demand for a payTo/resources pair whether or not it has been registered with this service.
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
Ref Tools Ref Tools MCP
{
"mcpServers": {
"ref-tools-ref-tools-mcp": {
"command": "npx",
"args": [
"ref-tools-mcp@latest"
],
"env": {
"REF_API_KEY": "YOUR_REF_API_KEY_HERE"
}
}
}
}
X402 Bazaar Listing Monitor
{
"mcpServers": {
"x402-bazaar-listing-monitor": {
"url": "https://x402-listing-monitor.acjlabs.com/mcp"
}
}
}
Frequently asked questions
Ref Tools Ref Tools MCP is categorized under Finance & Fintech and uses a local stdio subprocess. X402 Bazaar Listing Monitor belongs to Finance & Fintech and uses a remote HTTP/SSE transport. Pick Ref Tools Ref Tools MCP for finance & fintech work and X402 Bazaar Listing Monitor for finance & fintech.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
Ref Tools Ref Tools MCP has no declared pricing — check the project's own site. X402 Bazaar Listing Monitor has no declared pricing — check the project's own site. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add ref-tools-ref-tools-mcp and x402-bazaar-listing-monitor as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Ref Tools Ref Tools MCP has a quality signal of 63/100 (Good) with 2 views, 0 installs and 1,183 GitHub stars. X402 Bazaar Listing Monitor has 53/100 (Good) with 1 views, 0 installs and 1 GitHub stars.