Hostsmith MCP Server

@hostsmith/mcp-server

Official Model Context Protocol server for the Hostsmith hosting platform.

Static hosting for agents - give it a file, get a live URL. Claude Code shipping an HTML report. Cursor previewing a generated demo. Claude Desktop publishing a one-pager. One MCP call → public HTTPS URL in seconds. No repo, no CI, no build step. Custom domains, private sites, EU or US data residency.

Why Hostsmith

• Artifact-first. No repo, no build config - drop a file (or have the agent generate one), get a URL.
• Built for agents. MCP-native, OAuth-scoped, structured tool descriptions agents can chain.
• EU or US data residency. Pick where the user's data lives, architecturally - not via a checkbox.

Tools

Usage

Authentication is via OAuth 2.0. Static access tokens are not supported.

Claude Desktop

Open Settings → Connectors → Add custom connector and enter:

https://mcp.hostsmith.net/mcp

Claude Desktop runs the OAuth flow in your browser to authorize the connector against your Hostsmith account.

Stdio (Claude Code, Cursor, Cline, Windsurf, Zed)

Add this entry to your MCP client's config:

{
  "mcpServers": {
    "hostsmith": {
      "command": "npx",
      "args": ["-y", "@hostsmith/mcp-server"]
    }
  }
}

The first tool call triggers an OAuth flow in your browser to authorize the server against your Hostsmith account.

Remote URL (other clients)

Any MCP client that supports remote Streamable HTTP transport can point directly at the hosted server:

{
  "mcpServers": {
    "hostsmith": {
      "url": "https://mcp.hostsmith.net/mcp"
    }
  }
}

The client handles the OAuth flow automatically - you'll be redirected to Hostsmith to authorize access.

Cursor (one-click install)

Click the badge to add the remote Hostsmith server (https://mcp.hostsmith.net/mcp) to Cursor. The first tool call triggers OAuth in your browser.

Local HTTP (self-hosted)

Run the server in HTTP mode and have your MCP client perform OAuth against it:

npx @hostsmith/mcp-server http

{
  "mcpServers": {
    "hostsmith": {
      "url": "http://localhost:3100/mcp"
    }
  }
}

Environment variables

Network access

The MCP transport and OAuth flow run in your client's app process and need no agent-sandbox configuration - if your MCP client connected, those paths are working.

The one place sandboxed agents commonly fail is the upload PUT during deploy_create_upload + deploy_finalize: the bytes go from the agent's shell to the partition API host. From the agent terminal, allow outbound HTTPS (port 443) to:

• us.api.hostsmith.net (for sites in the us partition)
• eu.api.hostsmith.net (for sites in the eu partition)

Sandbox-specific snippets (Cursor sandbox.json, Claude Code settings.json, Codex config.toml, generic firewall guidance) live in the Network access docs.

Troubleshooting

• Tool calls return 401: the OAuth session expired. Reconnect from your MCP client to re-authorize.
• OAuth redirect loops: confirm MCP_BASE_URL matches the URL your MCP client uses to reach the server.
• Wrong partition: tool calls accept an explicit partition arg; if you omit it, the partition is inferred from your access token.
• Upload PUT fails (DNS, refused, proxy, timeout): the agent's shell can't reach the partition API host. See Network access.
• Inspect the install: npx @modelcontextprotocol/inspector npx -y @hostsmith/mcp-server http to browse tools interactively.

Documentation

Deeper material lives at hostsmith.net/docs/mcp.

Contributing

See CONTRIBUTING.md (including the Releases section for the version-stamping flow). Security issues: see SECURITY.md.

License

MIT