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

Hungry eSIM

Travel eSIMs: unlimited data, pick your days, top up existing eSIMs, card checkout, no API key.

Checks passed
15 / 22

0 failed · 7 not measured

Median response
1677 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

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?
103
Access & authenticationWhat is required to use this server?
102
Tool qualityAre the tool definitions usable by an agent?
400
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 2192 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-11-25, serverInfo.name hungry-esim.

  • Pass
    Lists tools

    tools/list returned 10 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 1677 ms over 2 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 2141 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.

  • Pass
    Parameters documented

    27 of 27 parameters have a description (100%). 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.

  • Pass
    Source repo linked

    A 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 2026-08-24T14:22:18.874803Z, within 180 days.

  • Not measured
    Open-source licence

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

Start using Hungry 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 hungry-esim https://api.hungry-esim.com/mcp

Capabilities

Tools 10

check_destination_coverage

Check whether we cover a destination before choosing a plan — answers "do you work in X?", "can I get mobile data / a SIM card in X?", "is X supported?". Returns yes/no, how many plans cover it, and the cheapest unlimited and fixed-data plan as examples. Use search_esim_plans or find_cheapest_plan for the full list.

Discovered
create_checkout

Buy the chosen eSIM data plan: builds a cart and returns a checkout URL the traveller opens to pay by credit card on hungry-esim.com — no crypto wallet and no API key needed. Use once a plan is picked. Does NOT charge — the user completes payment on the website. For unlimited plans, period_num (how many days of data the traveller wants) is required. If the customer is signed in, the order is linked to their account automatically.

Discovered
find_cheapest_plan

Find the lowest-priced eSIM data plan for a destination — for "what's the cheapest", "budget option", "cheapest SIM / data plan for X". Pass days (trip length) to rank by what the traveller actually pays for the whole trip: unlimited plans are priced per day with a multi-day discount, fixed-data plans by their sticker price, and plans that expire before the trip ends are dropped. Without days it ranks by daily rate. Returns up to 3 options with variant_id for create_checkout.

Discovered
get_order_status

Look up an eSIM order and return its status plus the SIM install details: install link, LPA activation code, QR image URL, and ICCID. Use for "where is my eSIM", "resend my QR code", or "did my order go through" when an order number is known. Signed-in customers can look up their own orders by number without an email. Otherwise, a short order number MUST be paired with the email used for the order — the eSIM install details are only returned to the buyer.

Discovered
get_plan_details

Get everything about one eSIM data plan: which countries the SIM roams in, data volume, validity in days, speed and fair-use throttling, and price. Use after search_esim_plans or find_cheapest_plan when the traveller asks what exactly a plan includes before buying.

Discovered
list_esim_topups

List the data top-up (recharge / refill) packages that can be added to an eSIM the customer already owns. Use when the traveller ran out of mobile data or wants more days on a SIM they already bought — topping up reuses the installed SIM, so no new QR code is needed. Pass the ICCID from my_esims. Returns package_code values to pass to topup_esim.

Discovered
my_esims

List the SIM cards (eSIMs) already on the signed-in Hungry eSIM account: ICCID, status, data package, expiry, and install link. Use for "my eSIM", "my SIM card", "how much data do I have left", or before topping up a SIM the traveller already owns. Requires connecting the Hungry eSIM account (OAuth) — no API key.

Discovered
my_orders

List the signed-in customer's recent eSIM purchases with payment and provisioning status. Use for "what did I buy" or "did my order go through" when no order number is at hand. For the install QR and activation code of one order, use get_order_status.

Discovered
search_esim_plans

Search prepaid travel eSIM data plans for a destination — the SIM card / mobile data / roaming option for a trip. Use this first for any "data plan for my trip to X" request. Includes unlimited plans where the traveller picks the number of days, and fixed-data plans. Filter by unlimited vs fixed-data, minimum data, and validity. Unlimited plans are quoted per day, fixed-data plans as a one-off total — never compare those two numbers directly. The unlimited total is the per-day price × days, with a volume discount from 7 days, so pass days (trip length) to get that total quoted alongside the daily rate. Price differences between similar plans come from the routing IP country (routing_ip_country) and the supported networks (speed) — quote both when comparing plans. Results are grouped: fixed-data plans first, then unlimited; each group sorted by price. Returns variant_id values to pass to create_checkout.

Discovered
topup_esim

Recharge an eSIM the customer already owns with more data: builds a cart and returns a checkout URL to pay by credit card on hungry-esim.com. The installed SIM keeps working — no new QR code is issued. Use this instead of create_checkout when the traveller already has one of our eSIMs. Does NOT charge — the user completes payment on the website. Get iccid from my_esims and package_code from list_esim_topups.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected2192 ms10
Connected1162 ms10