MCP ServerScored via MCP protocol probing: initialize handshake, tools/list conformance, and ping + tool invocation performance.
io.github.cyanheads/calculator-mcp-server
Calculator MCP server — evaluate, simplify, and differentiate math expressions.
50/100
Operational Score
Score Breakdown
Availability30/30
Conformance10/30
Performance10/40
Key Metrics
Uptime 30d
100.0%
P95 Latency
441.7ms
Conformance
Fail
Trend
Stable
What's Being Tested
Availability
HTTP health check to the service endpoint
Responded with HTTP 200 in 102ms
Conformance
MCP initialize handshake + tools/list
MCP initialize handshake failed
Performance
MCP ping + zero-arg tool invocation benchmarking
P95 latency: 441ms, task completion: 0%
Improvement Tips
- -Fix MCP initialize handshake errors
Recent Probe Results
| Timestamp | Status | Latency | Conformance |
|---|---|---|---|
| Apr 4, 2026 | success | 102.7ms | Partial |
| Apr 4, 2026 | success | 105.2ms | Partial |
| Apr 4, 2026 | success | 115.2ms | Partial |
| Apr 4, 2026 | success | 107.1ms | Partial |
| Apr 4, 2026 | success | 86.3ms | Partial |
| Apr 4, 2026 | success | 146.2ms | Partial |
| Apr 4, 2026 | success | 369.4ms | Partial |
| Apr 4, 2026 | success | 138.6ms | Partial |
| Apr 4, 2026 | success | 91.2ms | Partial |
| Apr 4, 2026 | success | 258.5ms | Partial |
Source Registries
mcp-registry
First Seen
Mar 31, 2026
Last Seen
Apr 4, 2026
Last Probed
Apr 4, 2026