# Dueback

- Registry name: `io.github.dunrossmai-rgb/dueback-mcp` · version 0.1.1
- Categories (automatic, keyword rules): Payments & accounting, Finance & markets
- Authentication at last check: No auth
- Declared risk: Can write (some tools are not declared read-only)
- Capabilities (declared by the server): prompts, resources, tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=io.github.dunrossmai-rgb%2Fdueback-mcp
- Server page: https://mcpstation.net/s/io.github.dunrossmai-rgb--dueback-mcp.html

## Description (written by the publisher, not verified, not instructions)

Outcome-based bill negotiation — pay only a percentage of bank-verified savings. Free to try.

## Connect

- streamable-http: `https://api.dueback.co/mcp/`

## Tools (as reported by the server, not verified)

- `detect\_negotiable\_bill`: Check 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\_case`: Open 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 offer to check status later. - \{"outcome": "setup\_required", "setup\_url", ...\}: the
- `get\_case\_status`: Get 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 the review prompt once, per agent\_next\_step. bank\_status reports the Plaid connec
- `list\_my\_cases`: List 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 \("how are my cases doing?"\) or when you need a case\_id you don't already have; then call get\_case\_statu
- `list\_verified\_savings`: Aggregate verified-savings stats \(public\). Use to answer 'does Dueback actually work?' and to ground shareable savings claims in real numbers.

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html