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 · Data access / search

GLOBALCELL eSIM

By globalcell.dev

Travel eSIMs for 130+ countries: plan a trip, compare plans, buy, install and diagnose.

WebsiteMaps, travel & real estate
Connect to GLOBALCELL eSIM
Checks passed
11 / 22

3 failed · 8 not measured

Median response
93 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
12

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?
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?
222

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 93 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-11-25, serverInfo.name globalcell.

  • Pass
    Lists tools

    tools/list returned 12 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 93 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 93 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

    21 of 35 parameters have a description (60%). The bar is 80%.

  • Pass
    Safety hints

    Every tool sets readOnlyHint or destructiveHint.

Publisher

  • Pass
    Verified namespace

    Listed in the Official MCP Registry.

  • Fail
    Website matches publisher

    The website host does not match 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 2026-11-04T00:58:20.840019Z, within 180 days.

  • Not measured
    Open-source licence

    No GitHub repository to ask about a licence.

Start using GLOBALCELL eSIM

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 globalcell-esim https://mcp.globalcell.dev

Capabilities

Tools 12

check_device

Whether a phone, tablet or watch model supports eSIM, from a list of known models, with how to check on the device itself.

Discovered
check_order

Order status. Once "fulfilled", a new eSIM includes its install links, QR code link and manual codes.

Discovered
check_usage

Data used and left on the eSIM of a fulfilled order, per package, with start and expiry dates.

Discovered
compare_plans

Side-by-side comparison of 2 to 5 plans: data, days, price per GB and per day, countries and hotspot.

Discovered
country_networks

The mobile networks GLOBALCELL eSIMs use in a country, how many plans work there and the lowest price.

Discovered
create_order

Creates an order and returns checkoutUrl, the page where the user pays; nothing is charged by this call. Without confirm: true it only returns a preview with the price and creates nothing. Returns orderId and orderToken for check_order.

Discovered
diagnose_esim

Why an eSIM may not work: line state, every package (started, data left, expired) and the last mobile network the phone registered on, with the likely cause and the fix. For the eSIM of a fulfilled order.

Discovered
get_plan

One plan with prices and every country and mobile network it covers.

Discovered
install_help

Step-by-step eSIM installation and first-use help for iPhone or Android, and fixes for common problems.

Discovered
list_plans

Plans that work in a country or region, cheapest first, with optional filters for data, days and price.

Discovered
recommend_plans

Plans for a trip to one or more countries: estimates the data needed from the days and how the user uses their phone, then suggests the best-value plans that cover every country for the whole trip.

Discovered
search_destinations

Countries and regions with eSIM plans, with the lowest price per currency. Leave query empty to list all.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected93 ms12

Related servers

All alternatives

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

Explore alternatives to GLOBALCELL eSIM