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 · Payments & trading

Santa's Calling

Gift a child a live, personalised phone call from Santa (UK, £6.99). Buyer pays on Stripe.

Checks passed
12 / 22

2 failed · 8 not measured

Median response
309 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
4

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Outdated check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?
500
Reliability & speedDoes it respond consistently and quickly?
004
Access & authenticationWhat is required to use this server?
102
Tool qualityAre the tool definitions usable by an agent?
310
Publisher identityCan the publisher be traced to its source?
312

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 309 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-11-25, serverInfo.name santas-calling.

  • Pass
    Lists tools

    tools/list returned 4 tools.

  • Pass
    Current protocol

    Negotiated 2025-11-25. The bar is 2025-06-18 or newer.

  • Pass
    HTTPS

    The endpoint URL is https.

Performance

  • Not measured
    Fast (p50)

    Median latency 309 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 309 ms over 1 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.

  • Not measured
    Reliable (uptime)

    1 of 1 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.

  • Not measured
    Stable tool list

    Fewer than two successful probes in 30 days, so tool-list stability is not measured.

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

    0 of 7 parameters have a description (0%). The bar is 80%.

  • Pass
    Safety hints

    Every tool sets readOnlyHint or destructiveHint.

Publisher

  • Pass
    Verified namespace

    Listed in the Official MCP Registry.

  • Pass
    Website matches publisher

    The website host matches the reverse-domain namespace.

  • Fail
    Source repo linked

    No repository URL is on file.

  • Not measured
    Repo owner matches

    This namespace is not an io.github login, so the owner comparison does not apply.

  • Pass
    Recently updated

    Updated 2026-11-08T19:46:21.476385Z, within 180 days.

  • Not measured
    Open-source licence

    No GitHub repository to ask about a licence.

Start using Santa's Calling

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 santa-s-calling https://santascalling.co.uk/mcp

Capabilities

Tools 4

buy_gift_call

Start buying a gift: a phone call from Santa for a child in the UK, £6.99. Returns `checkout_url`, a Stripe Checkout page where the buyer pays by card, Apple Pay or Google Pay (the link works for 30 minutes). Nothing is charged until they pay there. Once paid, we email the gift link to the buyer (and to recipient_email, if given). The parent opens it when the child is ready, adds the child's details, confirms their mobile by text, and Santa rings straight away. Usable until 24 December. Args: buyer_name: Who the gift is from, as the family will see it (e.g. "Grandma Jean"). buyer_email: The buyer's email, for the receipt and the gift link. recipient_name: Optional. Who it's for, e.g. "Sarah & Tom" (the parents) or the family name. recipient_email: Optional. We email the gift link straight to them once it's paid. message: Optional. A short message shown with the gift (up to 300 characters). promo_code: Optional. A promotion code, if the buyer has one.

Discovered
check_gift_status

Whether a gift started with buy_gift_call has been paid. Once paid, includes the gift link the family uses to book the call (it's also emailed).

Discovered
get_faq

Parents' frequently asked questions: what happens on the call, cost, safety, which phones, missed calls, refunds.

Discovered
get_info

What Santa's Calling is: a live, personalised phone call from Santa for a child in the UK (£6.99, about 3 minutes, ages 2-16). Includes price, how a gift works, safety and links.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected309 ms4