X402 Discovery MCP vs APIbase
A side-by-side look at the X402 Discovery MCP and APIbase MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose X402 Discovery MCP for aggregators work as a local process; choose APIbase for aggregators over a hosted endpoint. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose X402 Discovery MCP when
- You need dedicated capabilities in the Aggregators domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: API key required.
- You want tools like
x402_discover, x402_health, x402_register.
Choose APIbase when
- You need dedicated capabilities in the Aggregators domain.
- You prefer a remote HTTP/SSE transport.
- Its auth model fits you: No auth required.
- You have the keys it needs:
POSTGRES_PASSWORD, X402_PAYMENT_ADDRESS. - You want tools like
weather.conditions.current, weather.conditions.forecast, crypto.price.current.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Aggregators | Aggregators |
| Quality signal | 53/100 · Good | 63/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Remote HTTP/SSE |
| Auth | API key required | No auth required |
| Pricing | Freemium | Free |
| Required env vars | None listed | POSTGRES_PASSWORDX402_PAYMENT_ADDRESS |
| Verified owner | Community listing | Community listing |
| GitHub stars | 4 | 10 |
| Directory activity | 2 views 0 installs 0 upvotes | 4 views 0 installs 0 upvotes |
| Tools | 9 | 1425 |
| Full listing | View X402 Discovery MCP | View APIbase |
Tools & capabilities
X402 Discovery MCP tools 9
x402_discoverSemantic search across the live catalog by keyword, category, max pricex402_healthReal-time uptime + latency check for any registered servicex402_registerRegister a new x402 service (HTTPS-only, rate-limited)x402_attestERC-8004 trust score and reputation signals for a servicex402_scanFull x402 compliance scan: live config, trust score, mismatch detectionscout_routeDiscover best service for an intent + execute x402 paymentscout_discoverQuery discovery catalog without executingscout_executeExecute x402 payment to a known service URLscout_auditView agent spend log and budget status
APIbase tools 1425
weather.conditions.currentGet current weather conditions for a locationweather.conditions.forecastGet weather forecast for a locationcrypto.price.currentGet current prices for cryptocurrenciescrypto.market.overviewGet cryptocurrency market data by categorycrypto.coin.detailGet detailed information about a cryptocurrencycrypto.price.historyGet price history for a cryptocurrencycrypto.trending.getGet trending cryptocurrenciescrypto.global.statsGet global cryptocurrency market statisticscrypto.dex.poolsGet DEX liquidity pool datacrypto.token.lookupGet token info by contract addresscrypto.coin.searchSearch for cryptocurrencies by name or symbolpolymarket.market.searchSearch prediction markets on Polymarket- +1413 more on the listing page
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.
X402 Discovery MCP
{
"mcpServers": {
"rplryan-x402-discovery-mcp": {
"command": "uvx",
"args": [
"x402-payment-harness"
]
}
}
}
APIbase
{
"mcpServers": {
"whiteknightonhorse-apibase": {
"url": "https://apibase.pro/mcp"
}
}
}
Frequently asked questions
X402 Discovery MCP is categorized under Aggregators and uses a local stdio subprocess. APIbase belongs to Aggregators and uses a remote HTTP/SSE transport. Pick X402 Discovery MCP for aggregators work and APIbase for aggregators.
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.
X402 Discovery MCP is listed as freemium — a free tier with paid plans. Auth: api key required. APIbase is listed as free. Auth: no auth required. 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 rplryan-x402-discovery-mcp and whiteknightonhorse-apibase as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, X402 Discovery MCP has a quality signal of 53/100 (Good) with 2 views, 0 installs and 4 GitHub stars. APIbase has 63/100 (Good) with 4 views, 0 installs and 10 GitHub stars.