MCP ServerScored via MCP protocol probing: initialize handshake, tools/list conformance, and ping + tool invocation performance.
captcha-mcp
PoW CAPTCHA verification for MCP clients. Exposes generate_challenge and verify_solution tools — stateless proof-of-work that agents can embed in auth flows. L402 Lightning skip tier available for trusted clients. No API key required for PoW path.
57/100
Operational Score
Score Breakdown
Availability30/30
Conformance10/30
Performance17/40
Key Metrics
Uptime 30d
100.0%
P95 Latency
444.6ms
Conformance
Fail
Trend
Stable
What's Being Tested
Availability
HTTP health check to the service endpoint
Responded with HTTP 401 in 328ms
ConformanceNot tested
MCP initialize handshake + tools/list
Performance
MCP ping + zero-arg tool invocation benchmarking
P95 latency: 444ms, task completion: 0%
Recent Probe Results
| Timestamp | Status | Latency | Conformance |
|---|---|---|---|
| Jun 9, 2026 | success | 328.6ms | Pass |
| Jun 5, 2026 | success | 444.6ms | Pass |
| Jun 5, 2026 | success | 252.5ms | Pass |
| Jun 4, 2026 | success | 334.2ms | Pass |
| Jun 3, 2026 | success | 267.2ms | Pass |
| May 30, 2026 | success | 232.9ms | Pass |
| May 29, 2026 | success | 182.1ms | Pass |
| May 29, 2026 | success | 198.5ms | Pass |
| May 27, 2026 | success | 190ms | Pass |
| May 27, 2026 | success | 342.6ms | Pass |
Source Registries
smithery
First Seen
May 21, 2026
Last Seen
Jun 9, 2026
Last Probed
Jun 9, 2026