Is Quartermaster free?

Yes, Quartermaster is free to use.

How do I install Quartermaster?

Quartermaster is a remote plugin. You do not need to install anything locally. Add the server URL to your AI app's MCP configuration and you are ready to go.

Is Quartermaster safe to use?

Yes. Quartermaster passed MCP Marketplace's automated security scan with a score of 10/10 (low risk). Every server on MCP Marketplace is security-scanned before it's listed; see the full security report on this page for the findings and permissions.

What AI apps work with Quartermaster?

Quartermaster uses the Model Context Protocol (MCP) and works with any MCP-compatible AI app, including Claude, ChatGPT / Codex, Gemini, Copilot, Cursor, and more.

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Quartermaster MCP Server

by Dvirmimon123 Tech

Developer ToolsLow Risk10.0MCP RegistryRemote

Free

Server data from the Official MCP Registry

Agent-only store: AI agents search, quote and buy travel eSIM data plans for their users.

About

Agent-only store: AI agents search, quote and buy travel eSIM data plans for their users.

Remote endpoints: streamable-http: https://api.quartermasterhq.ai/mcp

Security Report

10.0

Low Risk10.0Low Risk

Valid MCP server (1 strong, 1 medium validity signals). No known CVEs in dependencies. Imported from the Official MCP Registry.

14 tools verified · Open access · No issues found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Found in Source Code

Found by scanning the linked source code. This listing connects to a hosted endpoint, so none of this runs on your machine: it describes what the server software does where it is hosted.

HTTP Network Access

Connects to external APIs or services over the internet.

How to Connect

Remote Plugin

No local installation needed. Your AI client connects to the remote endpoint directly.

Add this to your MCP configuration to connect:

{
  "mcpServers": {
    "io-github-dvirmimon123-tech-quartermaster": {
      "url": "https://api.quartermasterhq.ai/mcp"
    }
  }
}

Documentation

View on GitHub

From the project's GitHub README.

Quartermaster eSIM

A store built for AI agents to shop in, on behalf of the people they work for. Quartermaster sells prepaid travel eSIM data plans to AI agents over MCP. Your agent searches plans by country, checks the store's machine-readable policies, gets a quote, and buys within limits its human set in advance, then hands back the QR / LPA activation code.

The human stays in control. A person registers the agent with a spending mandate (per purchase, per day, per month, expiry) and funds a prepaid wallet themselves through a hosted payment page. The agent can never see card details, can never spend beyond the mandate or the wallet balance, and every purchase produces a signed receipt the human can verify. Within those limits the agent shops on its own: there is no storefront for people, because people are not the ones browsing.

MCP endpoint (Streamable HTTP): https://api.quartermasterhq.ai/mcp
Docs for agents: https://api.quartermasterhq.ai/docs
Discovery: /.well-known/mcp.json, /llms.txt, /policies
Claude skill: skills/quartermaster-esim/SKILL.md

Status: public sandbox. Search, quotes, wallet and purchase flows are live against a sandbox supplier; real eSIM fulfilment is being connected. Sandbox purchases return test activation codes.

Connect

Claude Code

claude mcp add --transport http quartermaster https://api.quartermasterhq.ai/mcp

Claude Desktop / other stdio clients (via mcp-remote)

{
  "mcpServers": {
    "quartermaster": { "command": "npx", "args": ["-y", "mcp-remote", "https://api.quartermasterhq.ai/mcp"] }
  }
}

Raw HTTP

curl -s https://api.quartermasterhq.ai/mcp \
  -H 'Content-Type: application/json' -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list","params":{}}'

Tools

Tool	What it does
`register_agent`	Register an agent for a principal with a spending mandate (per transaction, day, month, expiry). Returns `agent_key` and, for a new principal, `principal_key`.
`get_policies`	Machine-readable refund, dispute, mandate and wallet rules, so an agent can reason about terms before buying.
`search_plans`	Search eSIM plans by country, region, data and validity.
`get_quote`	Lock a price for a plan.
`purchase`	Buy with an idempotency key; enforces mandate and wallet; returns activation code and a signed receipt.
`get_wallet` / `get_topup_link`	Principal's prepaid wallet; hosted top-up link for the human to pay.
`order_status`, `regenerate_activation`, `request_refund`, `verify_receipt`	After-sale: status, new activation code, refunds and disputes by policy, receipt verification.
`rotate_principal_key`	Rotate the principal's ownership key.

Every decision comes back as {allowed, reason_code, human_readable}; refunds and disputes are resolved by written rules, not by a support desk.

Why agent-only

Other eSIM MCP servers help an agent compare plans. Quartermaster lets it finish the job: buy within a signed mandate, deliver the activation code, and keep a verifiable receipt.

Agents don't need a homepage. They need complete structured data, a stable API, explicit authority from their principal, and terms they can evaluate before acting. Quartermaster is designed around exactly that: one catalog behind every protocol, policies as data, and a hash-chained ledger with signed receipts for every transaction.

Contact

Suppliers and agent builders: dvirmimon123@gmail.com

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