Leaderboard/x402 Engine
MCP ServerScored via MCP protocol probing: initialize handshake, tools/list conformance, and ping + tool invocation performance.

x402 Engine

smithery.ai/x402engine/x402engine-mcp↗

28 pay-per-call APIs for AI agents via HTTP 402 crypto micropayments. Image generation, LLM inference, code execution, audio transcription, crypto market data, blockchain analytics, ENS resolution, IPFS storage, and travel search. Pays with USDC on Base/Solana or USDm on MegaETH.

57/100
Operational Score
Score Breakdown
Availability30/30
Conformance10/30
Performance17/40
Key Metrics
Uptime 30d
100.0%
P95 Latency
227ms
Conformance
Fail
Trend
Stable
What's Being Tested
Availability
HTTP health check to the service endpoint
Responded with HTTP 401 in 179ms
ConformanceNot tested
MCP initialize handshake + tools/list
Performance
MCP ping + zero-arg tool invocation benchmarking
P95 latency: 227ms, task completion: 0%
Recent Probe Results
TimestampStatusLatencyConformance
Mar 31, 2026success179.7msPass
Mar 31, 2026success193.9msPass
Mar 31, 2026success154.3msPass
Mar 31, 2026success178.1msPass
Mar 31, 2026success189.1msPass
Mar 31, 2026success187.7msPass
Mar 31, 2026success225.1msPass
Mar 31, 2026success172.6msPass
Mar 31, 2026success196.8msPass
Mar 31, 2026success226.7msPass
Source Registries
smithery
First Seen
Mar 29, 2026
Last Seen
Mar 29, 2026
Last Probed
Mar 31, 2026