MCP ServerScored via MCP protocol probing: initialize handshake, tools/list conformance, and ping + tool invocation performance.
zippopotam
Zippopotam MCP — wraps Zippopotam.us ZIP/postal code API (free, no auth)
94/100
Operational Score
Score Breakdown
Availability30/30
Conformance30/30
Performance34/40
Key Metrics
Uptime 30d
100.0%
P95 Latency
58.7ms
Conformance
Pass
Trend
Stable
What's Being Tested
Availability
HTTP health check to the service endpoint
Responded with HTTP 405 in 64ms
Conformance
MCP initialize handshake + tools/list
Valid MCP server info returned, tools/list responded
Performance
MCP ping + zero-arg tool invocation benchmarking
P95 latency: 58ms, task completion: 100%
Skills
lookup_zipcode
Look up place information (city, state, coordinates) for a ZIP or postal code in a given country.
lookup_city
Get all postal codes for a city in a given country and state/province.
Tools
2 tools verified via live probeServer: pipeworx-gatewayVersion: 0.1.0Protocol: 2025-03-26
Recent Probe Results
| Timestamp | Status | Latency | Conformance |
|---|---|---|---|
| Apr 4, 2026 | success | 64.7ms | Pass |
| Apr 4, 2026 | success | 37.7ms | Pass |
| Apr 4, 2026 | success | 21.9ms | Pass |
| Apr 4, 2026 | success | 32.9ms | Pass |
| Apr 4, 2026 | success | 32.8ms | Pass |
| Apr 4, 2026 | success | 33.7ms | Pass |
| Apr 4, 2026 | success | 24.9ms | Pass |
| Apr 4, 2026 | success | 32.5ms | Pass |
| Apr 4, 2026 | success | 40.2ms | Pass |
| Apr 4, 2026 | success | 33.7ms | Pass |
Source Registries
mcp-registry
First Seen
Apr 3, 2026
Last Seen
Apr 4, 2026
Last Probed
Apr 4, 2026