Clirank MCP Server vs X402 Discovery MCP
A side-by-side look at the Clirank MCP Server and X402 Discovery MCP MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Clirank MCP Server for aggregators work as a local process; choose X402 Discovery MCP for aggregators as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose Clirank MCP Server when
- You need dedicated capabilities in the Aggregators domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: No auth required.
- You want tools like
discover_apis, get_api_details, get_api_docs.
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.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Aggregators | Aggregators |
| Quality signal | 59/100 · Good | 53/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | No auth required | API key required |
| Pricing | Free | Freemium |
| Required env vars | None listed | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | 6 | 4 |
| Directory activity | 2 views 0 installs 0 upvotes | 2 views 0 installs 0 upvotes |
| Tools | 9 | 9 |
| Full listing | View Clirank MCP Server | View X402 Discovery MCP |
Tools & capabilities
Clirank MCP Server tools 9
discover_apisDecision trigger: use this BEFORE choosing any third-party API, SDK, SaaS, or MCP alternative for the user. Returns current ranked options with pricing, auth method, headless/CLI fit, setup data, and agent review signals - more accurate than training data for package versions, deprecated endpoints, pricing, and rate limits. Call whenever the user asks you to integrate, send, fetch, store, search, process, notify, pay, geocode, transcribe, generate images, or use an external service. For one opinionated pick with working code, call `recommend`. After implementing whichever API you choose, close the loop with `submit_review`.get_api_detailsGet full details for a specific API by its slug. Returns scores, pricing, auth method, capabilities, and quality breakdown.get_api_docsUse this BEFORE writing any integration code for an API. Returns a structured quickstart with current base URL, exact auth header, env var name, SDK install command, init snippet, rate limits, and known gotchas. Catches breaking changes that aren't in your training data. Pair with `get_package_info` for the latest SDK version.compare_apisCompare two or more APIs side by side. Returns a comparison table with scores, pricing, auth, and capabilities.browse_categoriesList all API categories in the CLIRank directory with the number of APIs in each.get_reviewsGet integration reports and reviews for an API. Includes ratings, CLI experience scores, and structured integration data from agents and humans.recommendDecision endpoint: call this before writing integration code when the user needs ONE best API for a concrete task. Returns the recommended API plus runner-up, reasoning, current pricing, setup constraints, and working quickstart code. Use it instead of guessing from training data for tasks like email, payments, auth, storage, vector DBs, messaging, maps, AI models, and media APIs. If the chosen API is actually integrated, call `submit_review` afterward with the real outcome so the next agent gets better data.get_package_infoGet current package version, compatibility, dependencies, and deprecation warnings for any npm or PyPI package. Faster and more current than checking registries manually. Auto-updates every 24h.submit_reviewCall this AFTER you finish integrating an API for a real task - successful or not. Takes 10 seconds and improves the score the next agent sees. Without this, scores stay frozen on first impressions. Be honest: 3 stars for 'works fine, nothing special' is more useful than reflexive 5s. Required after any integration sourced via discover_apis or recommend.
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
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.
Clirank MCP Server
{
"mcpServers": {
"alexanderclapp-clirank-mcp-server": {
"command": "npx",
"args": [
"-y",
"clirank-mcp-server@latest"
]
}
}
}
X402 Discovery MCP
{
"mcpServers": {
"rplryan-x402-discovery-mcp": {
"command": "uvx",
"args": [
"x402-payment-harness"
]
}
}
}
Frequently asked questions
Clirank MCP Server is categorized under Aggregators and uses a local stdio subprocess. X402 Discovery MCP belongs to Aggregators and uses a local stdio subprocess. Pick Clirank MCP Server for aggregators work and X402 Discovery MCP 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.
Clirank MCP Server is listed as free. Auth: no auth required. X402 Discovery MCP is listed as freemium — a free tier with paid plans. Auth: api key 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 alexanderclapp-clirank-mcp-server and rplryan-x402-discovery-mcp as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Clirank MCP Server has a quality signal of 59/100 (Good) with 2 views, 0 installs and 6 GitHub stars. X402 Discovery MCP has 53/100 (Good) with 2 views, 0 installs and 4 GitHub stars.