Dueback

Connect it to your AI

Claude Code

claude mcp add --transport http dueback-mcp https://api.dueback.co/mcp/

Claude, ChatGPT, Cursor and other apps

Add it as a custom connector with this URL (Streamable HTTP):

https://api.dueback.co/mcp/

Cursor, VS Code and other apps (mcp.json)

{
  "mcpServers": {
    "dueback-mcp": {
      "url": "https://api.dueback.co/mcp/"
    }
  }
}

Tools it offers

5 tools, as the server itself reported during our check on Oct 31, 2026.

• detect_negotiable_billCheck whether a bill looks negotiable. Returns {negotiable, category_label, pitch}. Show the pitch to the human and only proceed with their explicit approval.
• start_negotiation_caseOpen a Dueback negotiation case. Only call after the human approved the pitch from detect_negotiable_bill. Two outcomes: - {"outcome": "case_created", "case_id", ...}: the case is open; give the human the case id and off
• get_case_statusGet the current status of a negotiation case: state, steps taken, savings found, and whether human approval is needed. If the result carries review_prompt, a negotiation has succeeded and no review exists yet — present t
• list_my_casesList the human's own Dueback negotiation cases (newest first): case_id, status, public bill-type label, counterparty, and amounts for each. Use this when the human asks about their cases generally ("how are my cases doin
• list_verified_savingsAggregate verified-savings stats (public). Use to answer 'does Dueback actually work?' and to ground shareable savings claims in real numbers.

Questions