Siima eSIM
REMOTE · API.SIIMA.ONLINE
Search travel eSIM plans for 150+ countries and buy via Stripe link; eSIM QR delivered by email.
Available components
Last scanned (8 hours ago)
Scores higher than 64% of remote servers
Reachable. Last reached 5 Nov 2026.
Category E-commerce
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security51
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 5 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability70
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 1140 tokens (~228/item across 5 items; 5 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 10 Oct 26 +1
No change was recorded against any check on this day. Schema Quality & AI Usability went from 67 to 70.
- 28 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 22 Sept 26 0
- Tool “create_checkout_link” rewrote its description, which is the text the model reads security
- Tool “get_esim_plan” rewrote its description, which is the text the model reads security
- Tool “search_esim_plans” rewrote its description, which is the text the model reads security
- “create_checkout_link” reworded the description of “email” cosmetic
- 3 Sept 26 0
- HTTPS: pass → unverified ▼ security
- 26 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Aug 26 0
- Stability: 0.97 → pass security
- 14 Aug 26 0
- Tool “create_checkout_link” rewrote its description, which is the text the model reads security
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Probed https://api.siima.online/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=siima.online | CN=WE1,O=Google Trust Services,C=US | 4 Nov 2026 | 2 Feb 2027 | ECDSA 256 | ECDSA-SHA256 | 4142bdd3e293b8d1328423182d07e8a |
| SANs: siima.online, *.siima.online | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of api.siima.online. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| online. | present | 30961 | 13 | Verified |
| siima.online. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=15552000; includeSubDomains |
| content-security-policy | default-src 'self';base-uri 'self';font-src 'self' https: data:;form-action 'self';frame-ancestors 'self';img-src 'self' data:;object-src 'none';script-src 'self';script-src-attr 'none';style-src 'self' https: 'unsafe-inline';upgrade-insecure-requests |
| x-content-type-options | nosniff |
| x-frame-options | SAMEORIGIN |
| referrer-policy | no-referrer |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://api.siima.online/mcp | Verified | 200 | |
| http (plaintext) | http://api.siima.online/mcp | Inconclusive | 405 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
create_checkout_link Create eSIM checkout link ~206
Create a secure payment link on siima.online for a Siima eSIM plan (Stripe-powered, but hosted on our own site — never a redirect to checkout.stripe.com). Give the returned url to the user to complete payment. Optionally pass the buyer's email to pre-fill the checkout form. The buyer confirms it with a 6-digit code we email them, then pays — nothing is ordered until they do. After payment the buyer is emailed a link to their eSIM within a minute; opening it on their phone gives a one-tap install, the QR code and manual installation codes. No account or signup is required.
| Name | Type | Req | Description |
|---|---|---|---|
| currency | string | – | Currency for prices: "usd", "eur", or "gbp". Defaults to "usd". |
| string | – | Buyer email to pre-fill at checkout (they verify it before paying; the eSIM is delivered there) | |
| plan_id | string | yes | Plan id from search_esim_plans |
No output schema declared.
No examples provided.
get_esim_plan Get eSIM plan details ~151
Fetch full details of a single Siima eSIM plan by its id (from search_esim_plans). To buy: call create_checkout_link with the plan id, give the returned URL to the user. They confirm their email with a 6-digit code and pay there; nothing is ordered until they do. After payment they are emailed a link to their eSIM; opening it on their phone gives a one-tap install, the QR code and manual codes. No account needed.
| Name | Type | Req | Description |
|---|---|---|---|
| currency | string | – | Currency for prices: "usd", "eur", or "gbp". Defaults to "usd". |
| plan_id | string | yes | Plan id returned by search_esim_plans |
No output schema declared.
No examples provided.
list_destinations List covered destinations ~102
List all countries Siima sells a single-country eSIM plan for, with plan counts and the cheapest total price per country. Country codes are ISO 3166-1 alpha-2. Counts and prices cover country plans only, so they stay comparable — many more countries are reachable via multi-country plans; call list_regions for those.
| Name | Type | Req | Description |
|---|---|---|---|
| currency | string | – | Currency for prices: "usd", "eur", or "gbp". Defaults to "usd". |
No output schema declared.
No examples provided.
list_regions List regional & worldwide coverage areas ~203
List every multi-country coverage area Siima sells — regional areas such as "Europe+", "South East Asia" or "CENAM", and worldwide plans — with the countries every plan in it covers, how many plans it has, and its cheapest total price. Use this for a trip crossing several countries: pick a coverage area whose `countries` list contains the whole itinerary, then pass its name as `coverage` to search_esim_plans. `countries_on_some_plans` lists countries only some of the area's plans include — if the itinerary needs one, confirm the chosen plan covers it with get_esim_plan before buying. For a single-country trip use list_destinations instead.
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | Only return coverage areas that include this ISO 3166-1 alpha-2 country, e.g. "IT" |
| currency | string | – | Currency for prices: "usd", "eur", or "gbp". Defaults to "usd". |
No output schema declared.
No examples provided.
search_esim_plans Search Siima travel eSIM plans ~478
Search prepaid travel eSIM data plans by destination country (ISO 3166-1 alpha-2, e.g. "JP"), region (e.g. "Europe"), minimum data in GB, maximum total price, or plan duration in days. Plans come in three coverage types: "country" (one country), "regional" (a named multi-country area such as "Europe+" or "South East Asia"), and "global" (worldwide). A country filter matches every plan that covers it, of any coverage type — so searching country="FR" returns France-only plans alongside the Europe and worldwide plans that include France. For a trip through several countries, filter coverage_type="regional" or "global" to get one eSIM for the whole route; for a single-country trip a "country" plan is usually cheapest. Returned price is the final amount the customer pays at checkout (all fees included), in the requested currency. To buy: call create_checkout_link with the plan id, give the returned URL to the user. They confirm their email with a 6-digit code and pay there; nothing is ordered until they do. After payment they are emailed a link to their eSIM; opening it on their phone gives a one-tap install, the QR code and manual codes. No account needed.
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | Destination country as ISO 3166-1 alpha-2 code, e.g. "JP" for Japan. Matches plans of any coverage type that include it. |
| coverage | string | – | Exact coverage area name for a regional or worldwide plan, e.g. "Europe+", "CENAM", "Global" — get valid names from list_regions |
| coverage_type | string | – | Restrict to single-country plans, multi-country regional plans, or worldwide plans |
| currency | string | – | Currency for prices: "usd", "eur", or "gbp". Defaults to "usd". |
| duration_days | integer | – | Exact plan duration in days |
| limit | integer | – | Max results to return |
| max_price | number | – | Maximum total price in the requested currency (checkout total) |
| min_data_gb | number | – | Minimum data allowance in GB |
| region | string | – | Region name, e.g. "Europe", "Asia" |
No output schema declared.
No examples provided.
How do I install the Siima eSIM MCP server?
Siima eSIM is a hosted endpoint at https://api.siima.online/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · api.siima.online
claude mcp add --transport http online-siima-esim 'https://api.siima.online/mcp'
What is the Siima eSIM MCP server?
Siima eSIM is an MCP server listed in the public MCP registry as online.siima/esim. Search travel eSIM plans for 150+ countries and buy via Stripe link; eSIM QR delivered by email. This page covers its hosted endpoint (https://api.siima.online/mcp).
Is the Siima eSIM MCP server safe to use?
Siima eSIM scores 75 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Siima eSIM MCP server expose?
Siima eSIM exposes 5 tools: search_esim_plans, get_esim_plan, create_checkout_link, list_destinations, list_regions. Their descriptions and schemas cost roughly 1,140 tokens of context every time the server is loaded.
Does the Siima eSIM MCP server require authentication?
No. We connected to Siima eSIM without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Siima eSIM MCP server still maintained?
Siima eSIM is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.