Running a MVNO or eSIM business means managing hundreds or thousands of subscriber sessions, packages, and SIM states every day. Most of that work happens through slow, form-heavy operations portals. Carrier MCP changes that.
What it is
Carrier MCP is a Model Context Protocol server that connects your AI assistant directly to your MVNO fleet operations. Add it to Claude Desktop, Claude Code, or Cursor in under a minute, and you can ask questions and run operations in plain English:
- "Show me the health of my entire fleet."
- "Which subscribers haven't used data in 7 days?"
- "Assign the 1GB EU package to ICCID 8988247000100012345."
- "Diagnose why this SIM isn't connecting."
The server exposes 103 tools — 43 wrapping the eSIMVault OCS API, and 8 AI intelligence composites that chain multiple OCS calls into single-query answers. Five prompts cover the most common fleet management workflows end-to-end.
Install in 60 seconds
Claude Desktop — add to your config file:
{
"mcpServers": {
"carrier": {
"type": "http",
"url": "https://mcp.carrier.llc/mcp"
}
}
}Claude Code:
claude mcp add --transport http carrier https://mcp.carrier.llc/mcpCursor — add to ~/.cursor/mcp.json:
{
"mcpServers": {
"carrier": {
"url": "https://mcp.carrier.llc/mcp"
}
}
}On first use, your client opens a browser for OAuth authorization. After that, tokens refresh automatically.
The Free tier is live now — 1,000 tool calls per month, no credit card required.
How it works: per-user token vault
Each user authenticates through OAuth 2.1 + PKCE against their own Carrier account. The server ties every token to a reseller_id and a set of scopes — read, write, or admin. The OCS credentials never leave our servers; your MCP client only holds an opaque bearer token.
Scopes enforce what each user can do:
- Free / read: everything that reads state — list subscribers, check usage, run intelligence tools.
- Pro / write: modify subscriber and package state — adjust balances, assign packages, send SMS.
- Enterprise / admin: full access including bulk operations, template management, and account moves.
Pro and Enterprise are on the waitlist. The full feature set is available today on the Free tier for read operations.
What's next
We are building toward a self-serve Pro tier with Stripe billing, a chat playground on mcp.carrier.llc that lets you drive the live server from a browser, and a signed .mcpb bundle for one-click Claude Desktop install.
The server runs on Cloudflare Workers. Tool schemas are auto-generated from the live server registry and validated in CI on every deploy — what the README says matches what the server does, always.
Get started at mcp.carrier.llc. Questions: support@carrier.llc.