MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

Explore

Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

MCP server · Code & DevOps

Japan Laws Search MCP

By donniertf-hub Verified namespace

Search Japanese statutes via the e-Gov Law API. Free law_search tool.

WebsiteSource codeSearch & web data
Connect to Japan Laws Search MCP
Checks passed
12 / 22

3 failed · 7 not measured

Median response
152 ms

Median of successful probes over 7 days

30-day uptime
Not measured

Share of countable probes over 30 days, including daily rollups. Auth challenges are excluded.

Discovered tools
3

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Responded

The server completed its last measured handshake. This is an observation, not a guarantee.

Last checked
Check summary by test group
Test areaPassedFailedUnmeasured
ConnectionCan a client connect and discover tools?
410
Reliability & speedDoes it respond consistently and quickly?
103
Access & authenticationWhat is required to use this server?
102
Tool qualityAre the tool definitions usable by an agent?
220
Publisher identityCan the publisher be traced to its source?
402

Unmeasured means there is not enough evidence to decide. How these checks work

Inspect individual checks 22 recorded

Core

  • Pass
    Reachable

    Latest probe returned HTTP 200 in 148 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-03-26, serverInfo.name jp-laws-search-mcp.

  • Pass
    Lists tools

    tools/list returned 3 tools.

  • Fail
    Current protocol

    Negotiated 2025-03-26. The bar is 2025-06-18 or newer.

  • Pass
    HTTPS

    The endpoint URL is https.

Performance

  • Not measured
    Fast (p50)

    Median latency 152 ms over 2 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 155 ms over 2 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.

  • Not measured
    Reliable (uptime)

    2 of 2 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.

  • Pass
    Stable tool list

    No tool was removed and no required parameter was added in the last 30 days.

Access

  • Pass
    Open access

    tools/list succeeded with no credential, and the record declares none.

  • Not measured
    Standard auth

    Auth is not required, so the OAuth metadata check does not apply.

  • Not measured
    Free tier cited

    No publisher quote has been checked.

Tools

  • Pass
    Tools described

    Every tool description is at least 20 characters.

  • Pass
    Valid input schemas

    Every inputSchema is a JSON Schema object.

  • Fail
    Parameters documented

    2 of 6 parameters have a description (33%). The bar is 80%.

  • Fail
    Safety hints

    3 tools set neither readOnlyHint nor destructiveHint.

Publisher

  • Pass
    Verified namespace

    Listed in the Official MCP Registry.

  • Not measured
    Website matches publisher

    This namespace is not a reverse domain, so the website comparison does not apply.

  • Pass
    Source repo linked

    A repository URL is on file.

  • Pass
    Repo owner matches

    The GitHub repository owner matches the namespace login.

  • Pass
    Recently updated

    Updated 2026-10-29T21:10:59.836668Z, within 180 days.

  • Not measured
    Open-source licence

    The GitHub licence lookup has not returned an OSI result yet.

Start using Japan Laws Search MCP

Connect to this server

Choose your client, copy the configuration, then enable the server in your client’s MCP settings.

Run this command in your terminal, then restart Claude Code.

Claude Code

claude mcp add --transport http japan-laws-search-mcp https://jp-laws-search-mcp.donniertf.workers.dev/mcp

Capabilities

Tools 3

law_detail

PRO. Fetch law detail/metadata by law_id from search results.

Discovered
law_search

FREE. Search Japanese laws by keyword (Japanese or romanji terms as supported) — top 3.

Discovered
law_search_pro

PRO. Up to 20 law search hits for a keyword.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected148 ms3
Connected155 ms3

Related servers

All alternatives

Same function and industry, ranked by checks passed then median latency.

  • Responded15 / 22 checks passed
    McpStamp Change Orders

    theluckystrikeVerified

    Change orders against quotes and work orders: line changes, approval, running contract value.

    LegalCode & DevOps

    • Passed: Handshake
    • Passed: Tools listed
    • Passed: Updated recently

    Median latency 61 ms · Last checked

  • Responded15 / 22 checks passed
    UK Law

    flaviohtavaresVerified

    Search and read all UK legislation (130k Acts and regulations), updated daily, with official links.

    LegalCode & DevOps

    • Passed: Handshake
    • Passed: Tools listed
    • Passed: Updated recently

    Median latency 99 ms · Last checked

  • Responded15 / 22 checks passed
    Cortex

    FilippoPiloVerified

    Patent-pending semantic memory for AI agents: quality-gated writes, conflict tracking. Free trial.

    LegalCode & DevOps

    • Passed: Handshake
    • Passed: Tools listed
    • Passed: Updated recently

    Median latency 177 ms · Last checked

  • Responded15 / 22 checks passed
    NEARpedia

    UnityNodesVerified

    Live NEAR knowledge for agents: deprecations, breaking changes, protocol and contracts, dated

    LegalCode & DevOps

    • Passed: Handshake
    • Passed: Tools listed
    • Passed: Updated recently

    Median latency 293 ms · Last checked

Explore alternatives to Japan Laws Search MCP