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.
54/100
Operational Score
Score Breakdown
Availability30/30
Conformance10/30
Performance14/40
Key Metrics
Uptime 30d
100.0%
P95 Latency
229.2ms
Conformance
Fail
Trend
Stable
What's Being Tested
Availability
HTTP health check to the service endpoint
Responded with HTTP 200 in 136ms
Conformance
MCP initialize handshake + tools/list
MCP initialize handshake failed
Performance
MCP ping + zero-arg tool invocation benchmarking
P95 latency: 229ms, task completion: 0%
Improvement Tips
- -Fix MCP initialize handshake errors
Recent Probe Results
| Timestamp | Status | Latency | Conformance |
|---|---|---|---|
| May 18, 2026 | success | 136ms | Partial |
| May 16, 2026 | success | 94.5ms | Partial |
| May 13, 2026 | success | 101.8ms | Partial |
| May 13, 2026 | success | 83.8ms | Partial |
| May 12, 2026 | success | 229.2ms | Partial |
| May 11, 2026 | success | 82.6ms | Partial |
| May 9, 2026 | success | 91.6ms | Partial |
| May 7, 2026 | success | 163.2ms | Partial |
| May 7, 2026 | success | 156.9ms | Partial |
| May 7, 2026 | success | 173.6ms | Partial |
Source Registries
mcp-registry
First Seen
Mar 31, 2026
Last Seen
May 18, 2026
Last Probed
May 18, 2026