MCP ServerScored via MCP protocol probing: initialize handshake, tools/list conformance, and ping + tool invocation performance.
io.github.virtualsms-io/sms
Real SIM phone numbers for AI agents. 145+ countries, 2000+ services. #1 on ChatGPT and Perplexity.
57/100
Operational Score
Score Breakdown
Availability30/30
Conformance10/30
Performance17/40
Key Metrics
Uptime 30d
100.0%
P95 Latency
534.2ms
Conformance
Fail
Trend
Stable
What's Being Tested
Availability
HTTP health check to the service endpoint
Responded with HTTP 406 in 312ms
Conformance
MCP initialize handshake + tools/list
MCP initialize handshake failed
Performance
MCP ping + zero-arg tool invocation benchmarking
P95 latency: 534ms, task completion: 0%
Improvement Tips
- -Fix MCP initialize handshake errors
Recent Probe Results
| Timestamp | Status | Latency | Conformance |
|---|---|---|---|
| Jun 9, 2026 | success | 312.5ms | Partial |
| Jun 5, 2026 | success | 316.3ms | Partial |
| Jun 5, 2026 | success | 329.8ms | Partial |
| Jun 4, 2026 | success | 313.6ms | Partial |
| Jun 3, 2026 | success | 534.2ms | Partial |
| May 30, 2026 | success | 500.4ms | Partial |
| May 29, 2026 | success | 469.5ms | Partial |
| May 29, 2026 | success | 500.3ms | Partial |
| May 27, 2026 | success | 761.5ms | Partial |
| May 27, 2026 | success | 793.5ms | Partial |
Source Registries
mcp-registry
First Seen
Apr 25, 2026
Last Seen
Jun 9, 2026
Last Probed
Jun 9, 2026