Claude Code

Claude Code supports Streamable HTTP MCP servers natively.

Setup

Add the following to .claude/settings.local.json in your project directory (or ~/.claude/settings.local.json for global access):

{
  "mcpServers": {
    "upstream": {
      "url": "https://api.upstream.do/mcp",
      "headers": {
        "Authorization": "Bearer <your-token>"
      }
    }
  }
}

Replace <your-token> with your Personal Access Token.

Restart Claude Code for the changes to take effect.

Verify it works

Ask Claude Code:

“Use the Upstream MCP to show me my inbox”

You should see tool calls to list-inbox-splits and get-inbox-split-threads in the response.

Try these prompts

• “Show me what needs my reply”
• “Search my inbox for the Q3 proposal”
• “Summarize that long thread from Sarah”
• “Draft a reply to the investor update”
• “Snooze this thread until Monday at 9am”
• “Create a rule to auto-label emails from GitHub”