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Privacy-first eSIM store: UK +44 numbers, one-time SMS codes, and global travel-data eSIMs.
Do not connect
A critical issue was found. Do not connect this server as-is.
Scanned 1 month ago Due for re-check
A server can change after it's graded. Re-run the automated scan to refresh this report.
This grade is deterministic and reproducible: the same server surface always yields the same grade under a given algorithm version. It is a real automated assessment computed by the MCPGrade engine from what the probe actually observed — not a fabricated or opinion score. It is not a manual human pentest, so it can miss context-specific risks.
Every signal below was measured directly by the automated probe. The grade is derived only from evidence like this — nothing is assumed.
The buyukesim MCP server exposes 11 tools, focused primarily on general-purpose capabilities. Its published description reads: "Privacy-first eSIM store: UK +44 numbers, one-time SMS codes, and global travel-data eSIMs". It communicates over Streamable HTTP using the 2026-07-28 protocol revision, and does not require authorization to connect. MCPGrade currently rates buyukesim F — a critical issue was found and the server should not be connected as-is. Its most notable findings include "Cross-tool shadowing" and "Tool input schema requests a secret". This report is a deterministic, reproducible automated assessment: the same observed surface always yields the same grade under a given algorithm version, and it is refreshed as new scans arrive and free to read — but it is not a substitute for a manual human security review. Always re-check buyukesim's advertised tools, transport security, and authorization posture before connecting an autonomous agent or sharing sensitive context with it.
Add buyukesim to an MCP client using the endpoint below. Review the grade and findings above before granting an autonomous agent access.
MCP endpoint
https://buyukesim.com/mcpStreamable HTTP transport. This is the MCP endpoint, not a website — paste it into your MCP client server list rather than a browser.
Captured passively during the read-only scan. Click any value to find servers that match it.
The tools this server advertises via tools/list — names, purposes, and the parameters each accepts, exactly as enumerated read-only.
Search BuyUKeSIM travel/data eSIM plans for a country. Returns plan name, data amount, validity days, USD price, and package code. Pass a 2-letter ISO country code (e.g. GB, US, TR, JP). Omit country
List the countries/regions BuyUKeSIM travel eSIM data plans currently cover, with how many plans each has (2-letter ISO codes).
Get details of the BuyUKeSIM UK Number (+44) eSIM: a real UK mobile line for unlimited incoming SMS and calls (app and service verification codes, WhatsApp, Telegram), no KYC, paid in crypto, instant
Look up the status of a BuyUKeSIM order using its short lookup/magic code (the code the customer received). Returns only the order status - no personal data, no QR.
Create a new BuyUKeSIM agent wallet - a prepaid, no-KYC balance an AI agent funds with crypto and spends on eSIMs. Returns an api_key (ak_live_...) and a wallet_code. Save both: pass the api_key as th
Sorted worst-first. Each finding shows its severity, what it means, its OWASP MCP Top-10 mapping, and a recommended fix — the check id links to the exact methodology row that produced it.
tool: check_balance
A tool description tries to alter the model’s use of another tool.
e_ api key from create_wallet). Returns available USD balance.RecommendationDescriptions must describe only their own tool.
tool: check_balance
The input schema declares a parameter that asks the caller to hand over a password, key, token, or other secret — a credential-harvest / token-passthrough risk. (Bare pagination `token` params are excluded.)
parameter "api_key"RecommendationNever pass secrets as tool arguments; authenticate out-of-band and remove credential parameters from the schema.
tool: create_deposit
A tool description tries to alter the model’s use of another tool.
e_ api key from create_wallet). Returns a crypto payment address and amount;RecommendationDescriptions must describe only their own tool.
tool: create_deposit
The input schema declares a parameter that asks the caller to hand over a password, key, token, or other secret — a credential-harvest / token-passthrough risk. (Bare pagination `token` params are excluded.)
parameter "api_key"RecommendationNever pass secrets as tool arguments; authenticate out-of-band and remove credential parameters from the schema.
tool: list_transactions
A tool description tries to alter the model’s use of another tool.
e_ api key from create_wallet.RecommendationDescriptions must describe only their own tool.
tool: list_transactions
The input schema declares a parameter that asks the caller to hand over a password, key, token, or other secret — a credential-harvest / token-passthrough risk. (Bare pagination `token` params are excluded.)
parameter "api_key"RecommendationNever pass secrets as tool arguments; authenticate out-of-band and remove credential parameters from the schema.
tool: purchase_esim
A tool description tries to alter the model’s use of another tool.
ckage_code from search_esim_plans first. Pass a stable request_id to make retriesRecommendationDescriptions must describe only their own tool.
tool: purchase_esim
The input schema declares a parameter that asks the caller to hand over a password, key, token, or other secret — a credential-harvest / token-passthrough risk. (Bare pagination `token` params are excluded.)
parameter "api_key"RecommendationNever pass secrets as tool arguments; authenticate out-of-band and remove credential parameters from the schema.
tool: purchase_uk_number
A tool description tries to alter the model’s use of another tool.
e_ api key from create_wallet. Pass request_id for safe retries. This deliverRecommendationDescriptions must describe only their own tool.
tool: purchase_uk_number
The input schema declares a parameter that asks the caller to hand over a password, key, token, or other secret — a credential-harvest / token-passthrough risk. (Bare pagination `token` params are excluded.)
parameter "api_key"RecommendationNever pass secrets as tool arguments; authenticate out-of-band and remove credential parameters from the schema.
tool: get_one_time_code
The input schema declares a parameter that asks the caller to hand over a password, key, token, or other secret — a credential-harvest / token-passthrough risk. (Bare pagination `token` params are excluded.)
parameter "api_key"RecommendationNever pass secrets as tool arguments; authenticate out-of-band and remove credential parameters from the schema.
tool: (server instructions)
A tool description tries to alter the model’s use of another tool.
catalog tools: search_esim_plans, list_covered_countries, get_uk_number_info, chRecommendationDescriptions must describe only their own tool.
The server accepts tool enumeration (and likely invocation) with no authentication.
RecommendationRequire OAuth 2.1 authorization for any server exposing non-public tools.
tool: create_wallet
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "create_wallet"RecommendationScope tools to the minimum needed.
Vantaj uptime monitoring via MCP — manage monitors, heartbeats, incidents, and status pages.
Unified gateway to Algeria's TKAWEN ecosystem: commerce, certification, and AI tools.
Provides access to the Cohereon Doctrine AI safety framework with governance components, tiered access, and agent onboarding.
Agentic rails for complex workflows with receipts, fees, and MCP tool access.
Structural TC39 spec lookup for ECMA-262 and ECMA-402 in AI agents, SHA-pinned and offline-first.
Structural TC39 spec lookup for ECMA-262 and ECMA-402 in AI agents, SHA-pinned and offline-first.
Check the balance of the agent wallet (pass the ak_live_ api key from create_wallet). Returns available USD balance.
Top up the agent wallet with crypto (pass the ak_live_ api key from create_wallet). Returns a crypto payment address and amount; the balance is credited automatically once the payment confirms on-chai
List the most recent transactions (deposits and purchases) on the agent wallet. Pass the ak_live_ api key from create_wallet.
Buy a travel/data eSIM using the agent wallet balance (pass the ak_live_ api key from create_wallet). Deducts the plan price from the balance and returns the eSIM QR code instantly. Get a package_code
Buy a UK +44 Number eSIM (a real UK mobile line for incoming verification SMS and calls) using the agent wallet balance. Deducts about $25 and delivers a QR from stock instantly. Pass the ak_live_ api
One-Time Codes are PAUSED and cannot be bought; this only works for orders placed before the pause. Poll a purchased One-Time Code order for its SMS code. Returns the phone number and, once it arrives