Simsima Connectivity
FreeNot checkedPublic MCP server for a travel-eSIM marketplace: search, recommend and buy data plans for 190+ destinations, returning an attributed checkout link back to simsi
About
Public MCP server for a travel-eSIM marketplace: search, recommend and buy data plans for 190+ destinations, returning an attributed checkout link back to simsima.io. Remote Streamable HTTP, no auth.
README
Website: simsima.io · Endpoint: POST https://mcp.simsima.io/mcp (Streamable HTTP) · Registry: io.github.Willyfab/simsima-connectivity
Public MCP server exposing Simsima's travel eSIM catalog to AI agents.
Endpoint: POST https://mcp.simsima.io/mcp (Streamable HTTP). Health: GET /health.
Tools
list_destinations— countries/regions covered, with min price + product URL.search_plans— plans for a destination, with optional price/data/validity filters.get_plan— a single plan by sku.recommend_plan— best plan(s) for a trip (length + light/medium/heavy usage).create_checkout_link— a Simsima product URL with agent attribution (source/utm_*).
Read + attributed-link only. No payment, no order data, no auth.
Data source
Reads the public web feed ${SIMSIMA_FEED_BASE}/{locale}/agent/catalog (cached ~15 min).
Product URLs come straight from the feed → always valid (zero 404). No database, no backend calls.
Phase 1 covers country plans in en/fr (regional/global inherit from the feed later).
Env
SIMSIMA_FEED_BASE(defaulthttps://simsima.io)PORT(default 8080)RATE_LIMIT_RPM(default 60)POSTHOG_KEY(optional) — PostHog project API key. When set, the server emits anmcp_tool_callevent per tool call. Absent → telemetry disabled (no-op).POSTHOG_HOST(optional, defaulthttps://us.i.posthog.com) — PostHog ingestion host (match the web app).
Local dev
cd mcp
npm install
npm test # jest (25 tests)
npm run dev # ts-node-dev on :8080
curl localhost:8080/health
Connect from Claude (private validation — Phase 1a)
Add a custom connector pointing at https://mcp.simsima.io/mcp, then try:
"Recommande-moi un eSIM pour 7 jours au Japon en usage moyen."
Deploy
Coolify app, Docker build context = mcp/, subdomain mcp.simsima.io. Auto-deploy on push to main.
Set SIMSIMA_FEED_BASE, PORT, RATE_LIMIT_RPM env vars.
Publication to the MCP Registry (Phase 1b)
Metadata lives in server.json (namespace io.github.Willyfab/simsima-connectivity,
remote streamable-http at https://mcp.simsima.io/mcp). Discovery is also hinted from
web/public/llms.txt + llms-full.txt.
To publish (needs the mcp-publisher CLI + GitHub auth as the repo owner):
cd mcp
# install: see github.com/modelcontextprotocol/registry (release binary or `go install`)
mcp-publisher login github # OIDC auth for the io.github.Willyfab/* namespace
mcp-publisher publish # validates server.json and publishes
- Bump
versioninserver.jsonon each meaningful change and re-runpublish. - To use a branded
com.simsima/connectivitynamespace instead, verify domain ownership ofsimsima.iovia a DNS TXT record, then updatenameinserver.json(the remote URLmcp.simsima.ioalready sits on the verified domain).
Installing Simsima Connectivity
This server has no published package — it is built from source. Open the repository and follow its README.
▸ github.com/Willyfab/simsima-connectivityFAQ
Is Simsima Connectivity MCP free?
Yes, Simsima Connectivity MCP is free — one-click install via Unyly at no cost.
Does Simsima Connectivity need an API key?
No, Simsima Connectivity runs without API keys or environment variables.
Is Simsima Connectivity hosted or self-hosted?
A hosted option is available: Unyly runs the server in the cloud, no local setup required.
How do I install Simsima Connectivity in Claude Desktop, Claude Code or Cursor?
Open Simsima Connectivity on unyly.org, pick your client tab (Claude Desktop, Claude Code, Cursor) and press Install — the config is generated automatically, no JSON editing.
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