Simsima Connectivity
REMOTE · MCP.SIMSIMA.IO
Search, recommend & buy travel eSIM data plans for 190+ destinations via AI agents.
Available components
Last scanned (4 hours ago)
Scores higher than 89% 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 Security83
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC is configured correctly; the domain's records validate against the full chain to the root. View diagnostics → Pass
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability66
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 651 tokens (~93/item across 7 items; 7 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management91
- Stability check failed: schema churn in the 30 days we've observed: 0 tool removals, 1 breaking changes, 0 auth/transport breaks, 0 additions. See how to fix → Fail
Tool Coverage78
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 33% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 7 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 7 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 +9
- Stability: pass → fail ▼ security
- A breaking change shipped without a version bump: still 0.1.0 ▼ security
- Authorization: unverified → partial ▲ security
- Tool “create_checkout_link” rewrote its description, which is the text the model reads security
- Tool “get_plan” rewrote its description, which is the text the model reads security
- Tool “list_destinations” rewrote its description, which is the text the model reads security
- Tool “recommend_plan” rewrote its description, which is the text the model reads security
- Tool “search_plans” rewrote its description, which is the text the model reads security
- Schema quality: 49 → 93 ▼ functional
- “create_checkout_link” dropped the required parameter “agentSource” ▼ functional
- Tool coverage: 0% → 33% ▲ functional
- Schema quality: fair → good functional
- “check_coverage” reworded the description of “locale” cosmetic
- “create_checkout_link” reworded the description of “locale” cosmetic
- “get_destination_info” reworded the description of “locale” cosmetic
- “get_plan” reworded the description of “locale” cosmetic
- “list_destinations” reworded the description of “locale” cosmetic
- “recommend_plan” reworded the description of “locale” cosmetic
- “search_plans” reworded the description of “locale” cosmetic
- Tool “create_checkout_link” changed its title: Create an attributed checkout link → Get a link to buy a plan on simsima.io cosmetic
- 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
- 4 Sept 26 0
- DNSSEC: fail → pass ▲ 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
- Schema quality: 241 → 344 ▼ functional
- New tool “check_coverage” functional
- New tool “get_destination_info” functional
- 11 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
- 31 Jul 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
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://mcp.simsima.io/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=simsima.io | CN=WE1,O=Google Trust Services,C=US | 2 Nov 2026 | 31 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | b0b0b322290185dc136f98590e21bdf2 |
| SANs: simsima.io, *.simsima.io | ||||||
| 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 secure
Validation of mcp.simsima.io. — Secure
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| io. | present | 38690 | 8 | Verified |
| simsima.io. | present | 2371 | 13 | Verified |
| mcp.simsima.io. | Verified address RRset verified with the apex keys |
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 |
| x-content-type-options | nosniff |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://mcp.simsima.io/mcp | Verified | 200 | |
| http (plaintext) | http://mcp.simsima.io/mcp | HTTPS enforced | 301 | https://mcp.simsima.io/mcp |
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 →
check_coverage Check whether a destination covers a country ~92
Answer "does this eSIM work in <country>" for a destination (country, region or global plan). Accepts a country name or ISO code.
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | yes | – |
| destination | string | yes | – |
| locale | string | – | Language of the user. Sets the language of product pages and the currency of prices (en: USD, fr: EUR, ja: JPY, etc.). |
No output schema declared.
No examples provided.
create_checkout_link Get a link to buy a plan on simsima.io ~128
Return the URL of a plan's page on simsima.io, with the plan preselected, where the user can review and buy it. No order is placed and no payment is made by this tool. Pass the sku of the chosen plan; with only a destination, the link opens the destination's page without a preselected plan.
| Name | Type | Req | Description |
|---|---|---|---|
| destination | string | – | – |
| locale | string | – | Language of the user. Sets the language of product pages and the currency of prices (en: USD, fr: EUR, ja: JPY, etc.). |
| sku | string | – | – |
No output schema declared.
No examples provided.
get_destination_info Get destination coverage and networks ~73
Coverage (ISO country codes), mobile operators, top-up availability and entry price for a destination.
| Name | Type | Req | Description |
|---|---|---|---|
| destination | string | yes | – |
| locale | string | – | Language of the user. Sets the language of product pages and the currency of prices (en: USD, fr: EUR, ja: JPY, etc.). |
No output schema declared.
No examples provided.
get_plan Get eSIM plan detail ~72
Get one eSIM plan by its sku, as returned by search_plans or recommend_plan.
| Name | Type | Req | Description |
|---|---|---|---|
| locale | string | – | Language of the user. Sets the language of product pages and the currency of prices (en: USD, fr: EUR, ja: JPY, etc.). |
| sku | string | yes | – |
No output schema declared.
No examples provided.
list_destinations List eSIM destinations ~71
List the destinations Simsima covers (countries, regions and global plans), with the entry price and product URL of each.
| Name | Type | Req | Description |
|---|---|---|---|
| locale | string | – | Language of the user. Sets the language of product pages and the currency of prices (en: USD, fr: EUR, ja: JPY, etc.). |
No output schema declared.
No examples provided.
recommend_plan Recommend an eSIM plan ~97
Recommend the best plan(s) for a trip to a destination, given its length in days and expected data usage (light, medium or heavy).
| Name | Type | Req | Description |
|---|---|---|---|
| destination | string | yes | – |
| locale | string | – | Language of the user. Sets the language of product pages and the currency of prices (en: USD, fr: EUR, ja: JPY, etc.). |
| tripDays | integer | yes | – |
| usage | string | yes | – |
No output schema declared.
No examples provided.
search_plans Search eSIM plans ~118
Search the eSIM plans of a destination (country, region or global), cheapest first, with optional filters on price, data, validity and unlimited data.
| Name | Type | Req | Description |
|---|---|---|---|
| destination | string | yes | – |
| locale | string | – | Language of the user. Sets the language of product pages and the currency of prices (en: USD, fr: EUR, ja: JPY, etc.). |
| maxPrice | number | – | – |
| maxValidityDays | number | – | – |
| minDataGB | number | – | – |
| unlimited | boolean | – | – |
No output schema declared.
No examples provided.
How do I install the Simsima Connectivity MCP server?
Simsima Connectivity is a hosted endpoint at https://mcp.simsima.io/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 · mcp.simsima.io
claude mcp add --transport http willyfab-simsima-connectivity 'https://mcp.simsima.io/mcp'
What is the Simsima Connectivity MCP server?
Simsima Connectivity is an MCP server listed in the public MCP registry as io.github.Willyfab/simsima-connectivity. Search, recommend & buy travel eSIM data plans for 190+ destinations via AI agents. This page covers its hosted endpoint (https://mcp.simsima.io/mcp).
Is the Simsima Connectivity MCP server safe to use?
Simsima Connectivity scores 84 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 Simsima Connectivity MCP server expose?
Simsima Connectivity exposes 7 tools: list_destinations, search_plans, get_plan, recommend_plan, create_checkout_link, and 2 more. Their descriptions and schemas cost roughly 651 tokens of context every time the server is loaded.
Does the Simsima Connectivity MCP server require authentication?
No. We connected to Simsima Connectivity without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Simsima Connectivity MCP server still maintained?
Simsima Connectivity 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.