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Sim Roam Guide

Local SIM vs eSIM vs roaming vs portable WiFi — a general guide to staying connected abroad

Unify Dynamics LLC

Documentation
Tools9read-only
Sign-inNoneno account, no key
Data keptNoneprocessed in memory
PriceFreeoptional Pro limits
StatusLiveMCP + REST
Works withMCP · RESTany agent

Try asking

Real questions, and the tools your agent calls to answer them.

What are my options for phone data abroad?
Tools called
connectivity_options_overview
Should I get a local SIM or use eSIM?
Tools called
option_detail
Compare eSIM and international roaming
Tools called
compare_options
How does roaming work in the EU?
Tools called
region_guidance
What scenarios do you cover?
Tools called
regions_list
What should I check on my phone before using a local SIM abroad?
Tools called
device_compatibility_checklist
What's dual SIM / DSDS?
Tools called
connectivity_glossary
What's the best option for a two-week multi-country trip?
Tools called
choose_connectivity_option
Any tips for managing data usage while traveling?
Tools called
data_usage_tips

About

Simroam is a general, hand-written educational guide to phone-connectivity options while traveling. connectivity_options_overview lists the four common options: local physical SIM, eSIM, international roaming (through your home carrier), and portable WiFi/hotspot rental. option_detail explains one in depth with pros and cons; compare_options lines up several side by side. region_guidance gives general patterns for a travel scenario (EU/EEA roam-like-at-home rules, multi-country regional trips, a single-country extended stay, a short trip or layover); regions_list shows coverage. device_compatibility_checklist covers what to check on your own phone first — unlocked status, eSIM support, dual-SIM capability, network band compatibility. connectivity_glossary defines terms (eSIM, SIM-locked/unlocked, dual SIM/DSDS, roaming, fair use limit, network bands, portable WiFi). choose_connectivity_option gives general guidance matched to a traveler profile. data_usage_tips covers practical, non-carrier-specific advice for managing data abroad. General education about how connectivity options commonly work — it names no real carrier, eSIM provider, or plan/price, and coverage/pricing/eSIM support change constantly and vary by phone model and country. Keyless; fully local; nothing stored.

Sources: Hand-written general educational content describing widely known mobile-connectivity concepts and industry patterns; names no real carrier, eSIM provider, or plan/price — generic guidance only

Privacy

The publisher, Unify Dynamics LLC, states that tool inputs are processed in memory and not retained.

Data not collectedNo account, no profile, no stored prompts or results.
Privacy policyTerms

What it can do

9 tools, grouped by job. Every one is read-only or compute-only.

OpenAPI
The Options3 tools
  • Connectivity options overviewThe four common ways to stay connected while traveling, at a glance: local SIM, eSIM, international roaming, portable WiFi.
  • Option detailFull detail on one connectivity option: how it works, pros and cons.
  • Compare optionsLines up several connectivity options side by side.
Guidance3 tools
  • Region guidanceGeneral connectivity guidance for a travel scenario.
  • Regions listThe travel scenarios this reference has general guidance for.
  • Choose connectivity optionGeneral guidance on which connectivity option tends to fit a traveler profile.
Prep & Learn3 tools
  • Device compatibility checklistWhat to check on your own phone before relying on a local SIM, eSIM, or portable WiFi abroad — unlocked status, eSIM support, dual-SIM capability,…
  • Connectivity glossaryDefines connectivity terms: eSIM, SIM-locked/unlocked, dual SIM (DSDS), roaming, fair use limit, network bands, portable WiFi.
  • Data usage tipsPractical, non-carrier-specific tips for managing mobile data while traveling.

Information

PublisherUnify Dynamics LLC
CategoryTravel & transport · Reference
LanguagesEnglish
Built forGlobal
CompatibilityAny MCP client · any agent · REST
Version0.1.0
MCP endpointhttps://simroam.connectorbay.com/mcp
REST APIopenapi.json
SupportGet help · Status
CountryWorldwide

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Documentation

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What Sim Roam Guide is for

"Should I get a local SIM or use eSIM?", "how does roaming work in the EU?", "what's the best option for a two-week multi-country trip?" — the connectivity decision every trip starts with, explained generically without steering you toward any specific carrier or provider.

What it does

connectivity_options_overview lists the four common ways to stay connected: a local physical SIM card, an eSIM (a digital SIM profile), international roaming through your home carrier, and a portable WiFi/hotspot rental. option_detail goes deep on one — how it works, and its real pros and cons. compare_options lines up several side by side. region_guidance gives general patterns for a travel scenario: the EU/EEA's "roam-like-at-home" rules, a multi-country regional trip, an extended single-country stay, or a short trip or layover; regions_list shows what's covered. device_compatibility_checklist covers what to check on your own phone before you commit to an option — whether it's unlocked, whether it supports eSIM, whether it can run dual SIM (DSDS) to keep your home number reachable, and network band compatibility. connectivity_glossary defines the vocabulary: eSIM, SIM-locked vs unlocked, dual SIM/DSDS, roaming, fair use limits, network bands, and portable WiFi. choose_connectivity_option gives general guidance matched to a traveler profile — a short trip wanting to keep your home number, a long single-country stay, a multi-country trip, traveling with a group, or an older phone without eSIM support. data_usage_tips rounds it out with practical, non-carrier-specific advice for managing data once you're actually there.

What it is not

General education, not a comparison of real products. It names no real carrier, eSIM provider, or specific plan or price, and it isn't a recommendation for any particular purchase. Coverage, pricing, and eSIM support change constantly and vary by phone model and country. Always check your specific phone's capabilities and your current carrier's actual offers before you travel.

Privacy policy

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Sim Roam Guide — Privacy Policy

Effective 26 September 2026. Unify Dynamics LLC ("we", "us"), Menlo Park, California.

What Sim Roam Guide is. Sim Roam Guide is a connector (an MCP server and REST API) that AI assistants and personal agents call on your behalf for a general, hand-written guide to phone-connectivity options while traveling — option lookups, comparisons, region-based guidance, a device checklist, a glossary, situational guidance and data-usage tips. You interact with your assistant; the assistant sends us only the arguments needed for that one lookup.

What we receive. The arguments of each tool call — an option name, a region/scenario name, a glossary term, or a traveler profile — the technical headers needed to serve the request (an IP address or a client identifier supplied by the assistant, and a Pro API key if you have one), and standard server logs.

Everything is answered from bundled, hand-written content and nothing is stored. No request is forwarded to any third party — there is no upstream call at all, live or otherwise — and no query is logged in request bodies, recorded, or used to train anything. This Service does not sell SIM cards, eSIMs, or roaming plans, and does not connect to any carrier or provider — it discusses concepts only.

What we do not receive or store. We do not receive your conversation with the assistant, your name, your phone's IMEI/serial number, or any carrier account information — only the general option/scenario/term text you or your assistant type. We do not build a profile from your queries. Rate-limit counters (a client identifier and timestamps) are held in memory for at most 24 hours. Hosting-provider access logs, which contain IP addresses and request paths but not request bodies, are retained for up to 30 days for security and abuse prevention.

Sub-processors. None — the entire dataset is bundled with the server and answered locally. Hosting: Vercel (United States regions).

Legal bases and your rights. Our processing is necessary to provide the service you request through your assistant. Because we store no personal data beyond short-lived logs, requests to access, correct or delete personal data are usually satisfied automatically; you can still contact agent@connectorbay.com and we will respond within 30 days. We do not sell or share personal information and do not use your data to train models.

Children. Sim Roam Guide is a general-audience service operated by the adult using the assistant.

Changes. We will post changes here with a new effective date.

Terms of service

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Sim Roam Guide — Terms of Service

Effective 26 September 2026. These terms govern use of the Sim Roam Guide connector ("the Service") operated by Unify Dynamics LLC ("we", "us").

  1. The Service. Sim Roam Guide returns a general, hand-written guide to phone-connectivity options while traveling — option lookups, comparisons, region-based guidance, a device compatibility checklist, a glossary, situational guidance and data-usage tips. It is accessed through an AI assistant or directly over MCP or HTTP. This Service does not sell, activate, or connect to any SIM card, eSIM, or roaming plan, and names no real carrier or provider.
  2. General information, not a product comparison or recommendation. Coverage, pricing, and eSIM compatibility vary by phone model, carrier, and country, and change constantly. Nothing in this Service describes the actual current offer of any real carrier or provider.
  3. Your responsibility. You are solely responsible for confirming your specific phone's compatibility and any carrier's or provider's current offer before purchasing or activating any connectivity option.
  4. Acceptable use. Automated use within the published rate limits is welcome.
  5. Availability. The Service is provided "as is" without warranty. We may change, limit or discontinue it at any time.
  6. Data. Our Privacy Policy describes what we process. In short: your query is answered from bundled content, and nothing is stored.
  7. Pro keys. Optional Pro API keys are issued at our discretion, are personal to the holder and may be revoked for abuse.
  8. Liability. To the fullest extent permitted by law, Unify Dynamics LLC is not liable for any loss, including a connectivity failure or unexpected roaming charge, arising from use of or reliance on this Service. Our total liability is limited to US $100.
  9. Governing law. California law; venue in San Mateo County, California.
  10. Contact. Unify Dynamics LLC · agent@connectorbay.com · https://connectorbay.com/simroam

Support

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Sim Roam Guide support

Email agent@connectorbay.com. We answer within two business days.

When you report a problem, include the question you asked your agent, roughly when, and which agent you used (for example Claude, ChatGPT or Gemini). Never send us passwords, account numbers or ID numbers. Sim Roam Guide never asks for them.

Get Sim Roam Guide

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Streamable HTTP, stateless, no authentication. Paste the endpoint into any MCP-capable agent.

https://simroam.connectorbay.com/mcp
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      "url": "https://simroam.connectorbay.com/mcp"
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}