MCP ServerScored via MCP protocol probing: initialize handshake, tools/list conformance, and ping + tool invocation performance.
ai.nullary/nullary
Negative results intelligence for drug discovery — query measured failures via MCP.
50/100
Operational Score
Score Breakdown
Availability30/30
Conformance10/30
Performance10/40
Key Metrics
Uptime 30d
100.0%
P95 Latency
550.9ms
Conformance
Fail
Trend
Stable
What's Being Tested
Availability
HTTP health check to the service endpoint
Responded with HTTP 405 in 214ms
Conformance
MCP initialize handshake + tools/list
MCP initialize handshake failed
Performance
MCP ping + zero-arg tool invocation benchmarking
P95 latency: 550ms, task completion: 0%
Improvement Tips
- -Fix MCP initialize handshake errors
Recent Probe Results
| Timestamp | Status | Latency | Conformance |
|---|---|---|---|
| Jun 5, 2026 | success | 214.4ms | Partial |
| Jun 5, 2026 | success | 235ms | Partial |
| Jun 4, 2026 | success | 157ms | Partial |
| Jun 3, 2026 | success | 550.9ms | Partial |
| May 30, 2026 | success | 147.9ms | Partial |
| May 29, 2026 | success | 212.4ms | Partial |
| May 29, 2026 | success | 288.2ms | Partial |
| May 27, 2026 | success | 121.2ms | Partial |
| May 27, 2026 | success | 110.8ms | Partial |
| May 27, 2026 | success | 161.2ms | Partial |
Source Registries
mcp-registry
First Seen
May 25, 2026
Last Seen
Jun 8, 2026
Last Probed
Jun 5, 2026