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

UK Business Calendar MCP

By donniertf-hub Verified namespace

UK working days, bank holidays, HMRC and Companies House deadlines.

WebsiteSource codeProductivity & docs
Connect to UK Business Calendar MCP
Checks passed
12 / 22

3 failed · 7 not measured

Median response
196 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
10

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Outdated check

Last connection measurement is over 24 hours old. Current availability is unknown.

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 187 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-03-26, serverInfo.name uk-business-calendar-mcp.

  • Pass
    Lists tools

    tools/list returned 10 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 196 ms over 2 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 203 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

    14 of 36 parameters have a description (39%). The bar is 80%.

  • Fail
    Safety hints

    10 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 2026-10-29T21:11:45.744002Z, within 180 days.

  • Not measured
    Open-source licence

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

Start using UK Business Calendar 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 uk-business-calendar-mcp https://uk-business-calendar-mcp.donniertf.workers.dev/mcp

Capabilities

Tools 10

due_date

PRO. Invoice/contract due date: add N working days or N calendar days (rolled to next working day) to a date. Includes Late Payment Act 30-day default.

Discovered
facts_search

PRO ($0.01). Wikipedia search for background facts: up to 10 matching articles with snippets, and summaries for the top 3.

Discovered
month_planner

PRO. For a month: working days count, bank holidays, payday suggestions (last working day / 25th rolled back) and deadlines.

Discovered
news_briefing

PRO ($0.01). One-call briefing on a company or topic: latest GDELT news (optionally UK outlets only), Hacker News discussion and Wikipedia background.

Discovered
news_quick

FREE. Quick news & facts lookup for a topic: top Wikipedia matches (with summary) and top Hacker News stories from the last 30 days. No key.

Discovered
news_search

PRO ($0.01). Search worldwide online news (GDELT DOC 2.0, 65+ languages) for a topic: latest articles with headline, URL, outlet domain, time seen and source country. Options: days (1-90, default 7), uk_only, lang (e.g. english), max (≤50).

Discovered
next_bank_holidays

FREE. Next 3 UK bank holidays for a nation, plus whether today is a working day.

Discovered
tax_deadlines

PRO. Upcoming HMRC and Companies House deadlines for the next N months; add company_year_end for Corporation Tax, CT600 and accounts dates.

Discovered
tech_news_search

PRO ($0.01). Search Hacker News stories (via Algolia) for a company, product or topic: title, link, points, comments. Options: days (default 30), min_points, sort ('relevance' or 'recent'), max (≤30).

Discovered
working_days

PRO. Count UK working days between two dates (excludes weekends + bank holidays for the nation).

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected187 ms10
Connected204 ms10

Related servers

All alternatives

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

Explore alternatives to UK Business Calendar MCP