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

Promptster

AI & AgentsDeveloper Tools

Test and compare prompts across any AI provider. Bring your own keys.

65/100
Operational Score
Score Breakdown
Availability30/30
Conformance10/30
Performance25/40
Key Metrics
Uptime 30d
100.0%
P95 Latency
154.9ms
Conformance
Fail
Trend
What's Being Tested
Availability
HTTP health check to the service endpoint
Responded with HTTP 401 in 154ms
ConformanceNot tested
MCP initialize handshake + tools/list
Performance
MCP ping + zero-arg tool invocation benchmarking
P95 latency: 154ms, task completion: 0%
Recent Probe Results
TimestampStatusLatencyConformance
May 20, 2026success154.9msPass
May 18, 2026success151.6msPass
May 16, 2026success140msPass
May 13, 2026success132.7msPass
May 13, 2026success136.9msPass
May 12, 2026success204msPass
May 11, 2026success191.9msPass
May 9, 2026success170.1msPass
May 7, 2026success226.1msPass
May 7, 2026success519.2msPass
Source Registries
mcp-registry
First Seen
Mar 25, 2026
Last Seen
May 19, 2026
Last Probed
May 20, 2026