Uptime (30d)%100.0

Latency (p50)664 msfaster than 31% of servers

Protocol eraunknown

Tools—

Japan Official Statistics

https://estat-mcp.easakura.workers.dev/mcp ↗

Japan Official Statistics is a remote MCP server published at estat-mcp.easakura.workers.dev. It has been probed 32 times since 9/4/2026. It answered in 32 of them (100.0%), a near-uninterrupted record. Median response time is 664 ms, a delay an agent will notice. Its tool list could not be read; the server is closed to direct calls.

Search official Japanese government statistics (e-Stat): population, economy, labor, and more.

UnknownSpec: unknownVersion: —First probe: 2026-09-04 15:47:51Last probe: 2026-09-07 00:27:42

Agent readability score

Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.

Agent readability score

Tool parameters lack clarity, error handling is missing.based on measured tool list

Strengths

Clear tool naming for workflow
Defined dependency between tools

Weaknesses

Parameter types not explicitly defined
No error handling mentioned

search_statistics — Output format ambiguity
get_statistics_data — No error case documentation

Verdict

Tools have clear workflow but need parameter type definitions and error handling documentation to improve usability.

9/6/2026, 4:18:34 PM

Event narrative

Raw observations

Run	Era	Modern	ms	Legacy	ms	Versions
2026-09-07 00:27:42	Unknown	404	119	404	117	—
2026-09-06 22:36:06	Legacy	400	216	200	750	2025-11-25
2026-09-06 20:44:13	Legacy	400	285	200	664	2025-11-25
2026-09-06 18:49:47	Legacy	400	298	200	942	2025-11-25
2026-09-06 16:56:18	Legacy	400	1160	200	1950	2025-11-25
2026-09-06 15:42:25	Legacy	400	305	200	709	2025-11-25
2026-09-06 13:49:02	Legacy	400	363	200	814	2025-11-25
2026-09-06 11:55:12	Legacy	400	245	200	1156	2025-11-25
2026-09-06 10:02:05	Legacy	400	778	200	1271	2025-11-25
2026-09-06 08:09:06	Legacy	400	218	200	830	2025-11-25

Supported versions

—

as declared by server/discover + initialize

Capabilities

—

not readable

Schema score

—

not measurable

Era history

Each cell is one probe run. Faded cells are incomplete probes — one leg did not answer, so the era is inconclusive.

Era distribution

Legacy97%Unknown3%

Unknown07.09 00:27

04.09 15:47Measurements: 3207.09 00:27

LegacyUnknown

Response time history

The two probe legs separately: modern server/discover and legacy initialize.

server/discoverinitialize

Event log

Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.

1 hour agoSupported versions: 2025-11-25 → —
1 hour agoEra changed: Legacy → Unknown
2 days agoAdded to watch — era: Legacy

Get your badge

Add this badge to your README — it updates automatically as measurements change.

Markdown

[![mcpmetrics](https://mcpmetrics.io/badge/io.github.easakura/japan-official-statistics-mcp/era.svg)](https://mcpmetrics.io/servers/io-github-easakura-japan-official-statistics-mcp)

HTML

<a href="https://mcpmetrics.io/servers/io-github-easakura-japan-official-statistics-mcp"><img src="https://mcpmetrics.io/badge/io.github.easakura/japan-official-statistics-mcp/era.svg" alt="mcpmetrics"></a>

Raw observations

You are seeing the last 7 days. Sign up for the full history. Which check failed and why is in the dashboard.