Siima

Siima for AI agents

AI assistants can search Siima's travel eSIM catalogue and complete purchases for their users through our Model Context Protocol (MCP) server. The agent finds the right plan, hands the user a secure Stripe checkout link, and the eSIM — QR code, one-tap activation link, and manual codes — arrives in the buyer's email within a minute of payment. No account or signup required.

Add the MCP server

Pick your agent and paste the one-liner. Streamable HTTP transport, no authentication or API key required.

https://api.siima.online/mcp

In ChatGPT, open Settings → Connectors, turn on Developer mode under Advanced settings, then Add custom connector and paste the URL above (name it Siima, authentication None). Available on ChatGPT Plus, Pro, and Business.

Available tools

search_esim_plans

Search plans by country (ISO code), region, minimum GB, max price, or duration. Prices returned are the final checkout total. Pass an optional currency (USD, EUR, or GBP — defaults to USD) to price results and the max-price filter in that currency.

get_esim_plan

Full details for a single plan by id, priced in the requested currency (USD, EUR, or GBP).

create_checkout_link

Returns a secure siima.online checkout URL for a plan, in the requested currency (USD, EUR, or GBP). The buyer confirms their email with a 6-digit code, then pays; the eSIM QR code and activation link are emailed to them — no account needed.

list_destinations

All covered countries with plan counts and lowest prices.

REST API

Prefer plain HTTP? The public catalogue and checkout-link endpoints are open:

GET  https://api.siima.online/api/v1/plans?country=JP
GET  https://api.siima.online/api/v1/plans/:id
POST https://api.siima.online/api/v1/checkout/links
     { "planId": "<uuid>", "email": "optional@example.com", "currency": "usd|eur|gbp" }

For LLMs and crawlers

A machine-readable overview of Siima lives at siima.online/llms.txt, and the MCP server is described at /.well-known/mcp.json. All public content — destinations, plans, and guides — may be indexed and cited.

Questions or partnership ideas? Email support@siima.online · Browse destinations

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Siima — travel eSIMs for 150+ countries. Agents: MCP server at https://api.siima.online/mcp, docs at https://siima.online/ai