Port Scanner API
Scan TCP ports on any host -- check open/closed status, response time. 16 common ports by default. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.
Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.
Quickstart -- MCP
Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):
{
"mcpServers": {
"port-scanner": {
"url": "https://port-scanner.api.klymax402.com/mcp"
}
}
}
Quickstart -- HTTP (x402)
curl -X POST "https://port-scanner.api.klymax402.com/api/scan" \
-H "Content-Type: application/json" \
-d '{"host":"..."}'
# -> 402 Payment Required, with an x402 payment challenge in the response body
Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.
Tools
| Tool | Method | Path | Price | Description |
|---|---|---|---|---|
network_scan_ports | POST | /api/scan | $0.008 | Scan common ports on a host to check which are open |
network_scan_ports
Use this when you need to check which TCP ports are open on a host. Returns port status and response times in JSON.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
host | string | yes | The hostname or IP address to scan |
ports | array | no | Array of port numbers to scan (default: [21,22,25,53,80,110,143,443,993,995,3306,3389,5432,6379,8080,8443]) |
Example response:
{"host":"example.com","ports":[{"port":80,"status":"open","responseTime":45},{"port":443,"status":"open","responseTime":52},{"port":22,"status":"closed","responseTime":null}],"openCount":2,"totalScanned":16,"scanDuration":1200}
When to use: server reconnaissance, verifying firewall rules, checking service availability, and infrastructure auditing.
Not for: DNS resolution (use network_lookup_dns), SSL certificate checks (use security_check_ssl), HTTP header analysis (use network_analyze_headers).
Example agent prompts
- "Check which TCP ports are open on a host"
Payment
- Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
- Network: Base L2 (
eip155:8453) - Asset: USDC
- Facilitator: Coinbase CDP (primary), PayAI (fallback)
- Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)
Part of klymax402
100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.
- Catalog: https://klymax402.com/llms.txt
- Full API reference: https://klymax402.com/llms-full.txt
- Live stats: https://klymax402.com/stats
License
MIT