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sinoconnection-esim-mcp

Server Details

China & Asia travel eSIM specialist. 200+ countries. No-VPN internet in China.

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Status
Healthy
Uptime
100.0% over 74 days
Last Tested
Transport
Streamable HTTP · MCP 2025-06-18
URL
Repository
SkyUnlimit/sinoconnection-esim-mcp
GitHub Stars
0
Server Listing
SinoConnection eSIM

TDQS

A4.4/5.0

Scored across 5 tools

Disambiguation5/5

Each tool maps to a distinct step in the eSIM sales funnel: search_esim_plans finds plans, get_plan_details expands one plan, check_device_compatibility validates hardware, create_checkout_link produces a payment URL, and get_help handles policy/support questions. There is no meaningful overlap, and the descriptions even sequence the calls (search -> details -> compatibility -> checkout).

Naming Consistency5/5

All five names use consistent snake_case verb_noun form: search_esim_plans, get_plan_details, check_device_compatibility, create_checkout_link, get_help. The pattern is predictable and readable throughout.

Tool Count5/5

Five tools is well-scoped for a focused eSIM sales-assistant server, and each tool covers a necessary stage of the workflow. No tool feels redundant or padded.

Completeness4/5

The pre-sale lifecycle is well covered: plan discovery, plan detail, device/unlock validation, checkout link creation, and policy/installation help. Minor gaps exist around post-purchase operations (order status, retrieving a purchased eSIM/QR code), though checkout handling is explicitly offloaded to SinoConnection's own page, which reduces the impact.

Available Tools

5 tools
check_device_compatibilityA
Read-only
Inspect

Check whether a phone/tablet model supports eSIM before recommending a plan. Free-text device name in; compatible yes/no plus closest matches out. IMPORTANT: eSIM hardware support is only HALF the requirement — the phone must ALSO be carrier-unlocked. This tool returns an unlock_required flag + how to verify; always relay it, because a locked phone cannot use a travel eSIM.

NameRequiredDescriptionDefault
deviceYese.g. "iPhone 14 Pro", "Galaxy S24"

Output Schema

NameRequiredDescription
noteNo
matchedNo
candidatesNo
compatibleNo
unlock_noteNo
unlock_requiredNo

TDQS

A4.7/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations (readOnlyHint, openWorldHint) are supplemented with critical behavior: unlock flag, instruction to relay it, and that eSIM support alone is insufficient. No contradiction.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Three sentences, purpose first, no wasted words. Important warnings are highlighted with 'IMPORTANT:' and '+'. Front-loaded and scannable.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given output schema exists, description covers key outputs (compatible yes/no, closest matches, unlock_required flag). Complete for decision-making without over-explaining.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema covers parameter with example values, description adds 'Free-text device name in' clarifying input flexibility. With 100% coverage, description complements schema well.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool checks eSIM support for a device, with specific use case 'before recommending a plan'. It distinguishes from siblings like search_esim_plans by focusing on hardware compatibility.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly advises using 'before recommending a plan' and highlights the unlock requirement. While not listing when not to use, the context is clear and siblings are provided for reference.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

get_helpA
Read-only
Inspect

Answer customer support and policy questions about SinoConnection eSIMs: the REFUND POLICY, how to INSTALL (with step-by-step videos), activation, HOW THE NO-VPN CHINA ACCESS WORKS (roaming / exit IP — see faq.how_no_vpn_works), and how to get support. Call this whenever the customer asks about refunds, cancellations, installation/setup, activation, how it works, what IP / does it bypass the firewall, or help — do NOT answer these from memory (especially the IP/firewall question); relay this authoritative content verbatim in meaning.

NameRequiredDescriptionDefault

No parameters

Output Schema

NameRequiredDescription
faqNo
linksNo
installNo
supportNo
refund_policyNo

TDQS

A4.6/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already provide readOnlyHint=true and openWorldHint=true. The description adds context that the tool relays authoritative content verbatim and references a FAQ source (faq.how_no_vpn_works), explaining that answers should not be generated from memory. This goes beyond the annotations without contradicting them.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single paragraph that front-loads the core purpose ('Answer customer support and policy questions about SinoConnection eSIMs') and then lists specific topics. It is dense but each sentence adds value; a minor improvement could be to break into shorter sentences for readability.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool has no parameters and an output schema exists (though not shown), the description fully covers the tool's domain: it enumerates all relevant question types, provides usage context, and references a FAQ. No additional information is needed for an AI agent to correctly invoke it.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has zero parameters, and schema description coverage is 100%. Per guidelines, baseline is 4. The description does not need to add parameter meaning, but it effectively explains what the tool does without any parameter overhead.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description begins with 'Answer customer support and policy questions about SinoConnection eSIMs' and lists specific topics (refund policy, installation, activation, no-VPN access), clearly stating the verb 'answer' and the resource 'customer support and policy questions'. It distinguishes from sibling tools like check_device_compatibility and get_plan_details by focusing on help and policies.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description explicitly states 'Call this whenever the customer asks about refunds, cancellations, installation/setup, activation, how it works, what IP / does it bypass the firewall, or help' and instructs 'do NOT answer these from memory', providing clear when-to-use and when-not-to-use guidance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

get_plan_detailsA
Read-only
Inspect

Full details for a specific plan by id — call this WHENEVER the customer selects or shows interest in a plan; do NOT just quote a bare price. Returns coverage, networks, activation window and fair-usage detail PLUS whats_included (concrete selling points: instant QR delivery, keep-your-own-number data-only eSIM, buy-now/travel-later install window, easy Wi-Fi setup, bilingual English/中文 support, and China no-VPN where applicable) and a positive unlimited_note for unlimited plans. Present the 3–5 most relevant selling points together with the price (and any discount) to help the customer decide, THEN confirm eSIM compatibility + carrier-unlock before offering the checkout link. Use before create_checkout_link.

NameRequiredDescriptionDefault
idYesPackage id from search_esim_plans

Output Schema

NameRequiredDescription
planNo
errorNo
currencyNo
coverage_countNo
unlimited_noteNo
whats_includedNoFact-based selling points to present to the customer

TDQS

A4.3/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true and openWorldHint=true, so safety is covered; the description adds the workflow context that makes those hints actionable (safe to call on every plan view, and the sequence of compatibility/unlock checks before checkout). It spends a lot of text enumerating return fields that the output schema already carries, which dilutes the behavioral value slightly.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Purpose and the routing rule are correctly front-loaded, but the middle is a dense run-on that embeds an enumerated list of example selling points and a multi-step sales script. Much of that is agent-prompt material rather than tool-selection material, so several clauses fail the 'every sentence earns its place' test.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a single-id read tool with an output schema, annotations, and full schema coverage, the description covers purpose, invocation trigger, ordering against siblings, and the shape of the returned content. Nothing an agent needs to call it correctly is missing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% and the single parameter is documented in the schema as 'Package id from search_esim_plans'. The description only restates 'by id', adding no format or sourcing detail beyond the schema, so the baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb+resource ('Full details for a specific plan by id') and immediately differentiates itself from siblings by naming search_esim_plans as the id source and create_checkout_link as the downstream step. An agent knows exactly what this returns and where it fits in the flow without opening the schema.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicit when-to-use ('call this WHENEVER the customer selects or shows interest in a plan'), explicit when-not ('do NOT just quote a bare price'), and an explicit ordering constraint ('Use before create_checkout_link'). This is about as unambiguous as routing guidance gets.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

search_esim_plansA
Read-only
Inspect

Search travel eSIM plans for any of 200+ countries. Specialized China plans deliver uncensored internet WITHOUT a VPN (unlike most eSIMs, which are throttled or blocked in China) — only when the plan's china_open_internet field is true. Also covers regional Asia and worldwide bundles. Quote price_usd — that is the price the customer pays in USD, with any current sitewide discount already applied; list_price_usd is the original and on_sale/discount_pct show the saving. If is_fair_usage_policy is true, the plan is NOT truly unlimited — relay the cap. PRESENT RESULTS ATTRACTIVELY TO BOOST SALES: lead each plan with its flag emoji + the title, put the price in bold, strike or note the discount when on_sale, and show the highlight value line (it already includes 🔓/🌍/📱/⚡/💰 icons). Lay plans out as a clean, scannable list or a markdown table with a flag column; recommend a best-value pick. Call get_plan_details for the full pitch once the customer shows interest. For China (country=CN) the results LEAD with the regional Asia plan, marked recommended:true with a recommendation reason (three mainland networks, Hong Kong/Macau stopovers on the same eSIM) — present it first and say why; the China-only plans follow as the alternative.

NameRequiredDescriptionDefault
typeNo
regionNoRegion slug: asia | europe | mea | namerica | latam | oceania
countryNoISO-2 country code, e.g. CN, JP, KR
durationNoExact validity in days (optional filter)

Output Schema

NameRequiredDescription
plansNo
totalNo
currencyNo
recommendationNoWhy the recommended plans lead (China searches)

TDQS

A4.6/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations only cover readOnlyHint/openWorldHint, but the description discloses real behavioral traits: China plans are uncensored only when china_open_internet is true, is_fair_usage_policy=true means the plan is not truly unlimited and the cap must be relayed, and for country=CN the results are reordered to lead with a recommended:true regional plan. These are result-shaping behaviors the agent could not infer from annotations or schema.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Front-loaded with purpose and the highest-value nuance (China/VPN) before pricing and presentation rules. It is long, and the 'PRESENT RESULTS ATTRACTIVELY TO BOOST SALES' block is verbose, but nearly every sentence carries actionable instruction rather than filler.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Even though an output schema exists, the description explains the fields the agent must reason about (price_usd vs list_price_usd, on_sale/discount_pct, highlight, flag, recommended/recommendation), which is exactly what's needed to present results and pick a best-value option. Nothing needed to call or interpret this tool is missing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 75%, so most parameters are already documented in the schema. The description adds meaning for country (CN semantics) and implicitly for regional/global via the bundle list, but says nothing about `duration` beyond the schema text and never explains the local/regional/global `type` enum values. Baseline 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Opens with a specific verb+resource+scope: 'Search travel eSIM plans for any of 200+ countries,' then narrows the catalog (China-only, regional Asia, worldwide bundles). It also distinguishes itself from the sibling get_plan_details by assigning that tool the 'full pitch once the customer shows interest' role.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicit routing: use this tool to search, then 'Call get_plan_details for the full pitch once the customer shows interest.' It also names the condition that changes result ordering (country=CN) and how to treat is_fair_usage_policy, so the agent knows both when to use it and how to hand off.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

  1. 2 tool updates
    • Changedget_plan_details2 fields changed
      • addedOutput schema / properties / plan / properties / networks_in_country
        Added value: +{
        +  "description": "Networks the recommended plan uses in the searched country",
        +  "items": {
        +    "type": "string"
        +  },
        +  "type": "array"
        +}
      • addedOutput schema / properties / plan / properties / recommended
        Added value: +{
        +  "description": "China searches: true on the regional Asia plans that lead the results",
        +  "type": "boolean"
        +}
    • Changedsearch_esim_plans3 fields changed
      • addedOutput schema / properties / plans / items / properties / networks_in_country
        Added value: +{
        +  "description": "Networks the recommended plan uses in the searched country",
        +  "items": {
        +    "type": "string"
        +  },
        +  "type": "array"
        +}
      • addedOutput schema / properties / plans / items / properties / recommended
        Added value: +{
        +  "description": "China searches: true on the regional Asia plans that lead the results",
        +  "type": "boolean"
        +}
      • addedOutput schema / properties / recommendation
        Added value: +{
        +  "description": "Why the recommended plans lead (China searches)",
        +  "type": "string"
        +}
  2. 2 tool updates
    • Changedget_plan_details2 fields changed
      • addedOutput schema / properties / plan / properties / flag
        Added value: +{
        +  "description": "Destination flag emoji to lead the plan with",
        +  "type": "string"
        +}
      • addedOutput schema / properties / plan / properties / highlight
        Added value: +{
        +  "description": "Compact one-line value pitch to relay to the customer",
        +  "type": "string"
        +}
    • Changedsearch_esim_plans2 fields changed
      • addedOutput schema / properties / plans / items / properties / flag
        Added value: +{
        +  "description": "Destination flag emoji to lead the plan with",
        +  "type": "string"
        +}
      • addedOutput schema / properties / plans / items / properties / highlight
        Added value: +{
        +  "description": "Compact one-line value pitch to relay to the customer",
        +  "type": "string"
        +}
  3. 1 tool update
    • Changedget_plan_details3 fields changed
      • addedOutput schema / properties / coverage_count
        Added value: +{
        +  "type": "integer"
        +}
      • addedOutput schema / properties / unlimited_note
        Added value: +{
        +  "type": [
        +    "string",
        +    "null"
        +  ]
        +}
      • addedOutput schema / properties / whats_included
        Added value: +{
        +  "description": "Fact-based selling points to present to the customer",
        +  "items": {
        +    "type": "string"
        +  },
        +  "type": "array"
        +}
  4. 5 tool updates
    • Changedcheck_device_compatibility1 field changed
      • changedOutput schema / (root)
        Previous value: -nullNew value: +{
        +  "properties": {
        +    "candidates": {
        +      "type": "array"
        +    },
        +    "compatible": {
        +      "type": "boolean"
        +    },
        +    "matched": {
        +      "type": [
        +        "object",
        +        "null"
        +      ]
        +    },
        +    "note": {
        +      "type": "string"
        +    },
        +    "unlock_note": {
        +      "type": "string"
        +    },
        +    "unlock_required": {
        +      "type": "boolean"
        +    }
        +  },
        +  "type": "object"
        +}
    • Changedcreate_checkout_link1 field changed
      • changedOutput schema / (root)
        Previous value: -nullNew value: +{
        +  "properties": {
        +    "before_you_buy": {
        +      "type": "string"
        +    },
        +    "checkout_url": {
        +      "type": "string"
        +    },
        +    "error": {
        +      "type": "string"
        +    },
        +    "note": {
        +      "type": "string"
        +    },
        +    "plan": {
        +      "type": "object"
        +    }
        +  },
        +  "type": "object"
        +}
    • Changedget_help1 field changed
      • changedOutput schema / (root)
        Previous value: -nullNew value: +{
        +  "properties": {
        +    "faq": {
        +      "type": "object"
        +    },
        +    "install": {
        +      "type": "object"
        +    },
        +    "links": {
        +      "type": "object"
        +    },
        +    "refund_policy": {
        +      "type": "object"
        +    },
        +    "support": {
        +      "type": "object"
        +    }
        +  },
        +  "type": "object"
        +}
    • Changedget_plan_details1 field changed
      • changedOutput schema / (root)
        Previous value: -nullNew value: +{
        +  "properties": {
        +    "currency": {
        +      "type": "string"
        +    },
        +    "error": {
        +      "type": "string"
        +    },
        +    "plan": {
        +      "properties": {
        +        "activation_policy": {
        +          "type": [
        +            "string",
        +            "null"
        +          ]
        +        },
        +        "china_open_internet": {
        +          "description": "Open/uncensored internet in China without a VPN",
        +          "type": "boolean"
        +        },
        +        "coverage_codes": {
        +          "items": {
        +            "type": "string"
        +          },
        +          "type": "array"
        +        },
        +        "data_amount": {
        +          "type": "string"
        +        },
        +        "discount_pct": {
        +          "type": "number"
        +        },
        +        "fair_usage_policy": {
        +          "type": [
        +            "string",
        +            "null"
        +          ]
        +        },
        +        "id": {
        +          "type": "string"
        +        },
        +        "install_window_days": {
        +          "type": [
        +            "integer",
        +            "null"
        +          ]
        +        },
        +        "is_fair_usage_policy": {
        +          "type": "boolean"
        +        },
        +        "is_unlimited": {
        +          "type": "boolean"
        +        },
        +        "list_price_usd": {
        +          "description": "Original price before discount",
        +          "type": "number"
        +        },
        +        "networks": {
        +          "items": {
        +            "type": "string"
        +          },
        +          "type": "array"
        +        },
        +        "on_sale": {
        +          "type": "boolean"
        +        },
        +        "price_usd": {
        +          "description": "Price the customer pays (current discount applied)",
        +          "type": "number"
        +        },
        +        "title": {
        +          "type": "string"
        +        },
        +        "validity_days": {
        +          "type": "integer"
        +        }
        +      },
        +      "type": "object"
        +    }
        +  },
        +  "type": "object"
        +}
    • Changedsearch_esim_plans1 field changed
      • changedOutput schema / (root)
        Previous value: -nullNew value: +{
        +  "properties": {
        +    "currency": {
        +      "type": "string"
        +    },
        +    "plans": {
        +      "items": {
        +        "properties": {
        +          "activation_policy": {
        +            "type": [
        +              "string",
        +              "null"
        +            ]
        +          },
        +          "china_open_internet": {
        +            "description": "Open/uncensored internet in China without a VPN",
        +            "type": "boolean"
        +          },
        +          "coverage_codes": {
        +            "items": {
        +              "type": "string"
        +            },
        +            "type": "array"
        +          },
        +          "data_amount": {
        +            "type": "string"
        +          },
        +          "discount_pct": {
        +            "type": "number"
        +          },
        +          "fair_usage_policy": {
        +            "type": [
        +              "string",
        +              "null"
        +            ]
        +          },
        +          "id": {
        +            "type": "string"
        +          },
        +          "install_window_days": {
        +            "type": [
        +              "integer",
        +              "null"
        +            ]
        +          },
        +          "is_fair_usage_policy": {
        +            "type": "boolean"
        +          },
        +          "is_unlimited": {
        +            "type": "boolean"
        +          },
        +          "list_price_usd": {
        +            "description": "Original price before discount",
        +            "type": "number"
        +          },
        +          "networks": {
        +            "items": {
        +              "type": "string"
        +            },
        +            "type": "array"
        +          },
        +          "on_sale": {
        +            "type": "boolean"
        +          },
        +          "price_usd": {
        +            "description": "Price the customer pays (current discount applied)",
        +            "type": "number"
        +          },
        +          "title": {
        +            "type": "string"
        +          },
        +          "validity_days": {
        +            "type": "integer"
        +          }
        +        },
        +        "type": "object"
        +      },
        +      "type": "array"
        +    },
        +    "total": {
        +      "type": "integer"
        +    }
        +  },
        +  "type": "object"
        +}
  5. 1 tool update
    • Addedget_help
  6. 4 tool updates
    • First observedcheck_device_compatibility
    • First observedcreate_checkout_link
    • First observedget_plan_details
    • First observedsearch_esim_plans

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