# gossipcat

Orchestrates multi-agent consensus code reviews by cross-checking findings against actual source lines. Filters false alarms before you read them.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, Gemini CLI · ★ 40
- Author: gossipcat-ai
- License: MIT · policy=link-only · description only; the file stays with the author
- Source: https://github.com/gossipcat-ai/gossipcat-ai
- Updated: 2026-10-13
- HTML: https://affpapa.org/en/nevibecode/mcp/gossipcat

## What it does

A single AI reviewer often reports bugs that do not exist. gossipcat coordinates parallel agents so each verifies peer reports against real `file:line` locations in your repository. Fake issues get eliminated immediately.

The orchestrator tracks accuracy metrics for every participant and routes tasks toward historically reliable agents. When an agent fails repeatedly in a category, the system writes markdown skill files from past mistakes to adjust future prompts. It also serves a live browser dashboard and a web chat bridge.

Running `npx -y gossipcat` requires Node 22 or newer on your system. A baseline two-agent setup runs directly on your editor subscription without extra API keys, while connecting external relay models requires their respective tokens.

## Requirements
- Needs: Node.js (commands run via npx)
- Environment variables: `GOOGLE_API_KEY`, `GOSSIPCAT_PORT` — keys and tokens: ask the human for the values, never commit them or put them in shared files.

## Install

### Claude Code (native platform)

**Platform CLI**
```bash
claude mcp add --env GOOGLE_API_KEY=<GOOGLE_API_KEY> --env GOSSIPCAT_PORT=<GOSSIPCAT_PORT> --transport stdio gossipcat -- npx -y gossipcat
```
Replace <…> with your own values

### Codex

**Platform CLI**
```bash
codex mcp add gossipcat --env GOOGLE_API_KEY=<GOOGLE_API_KEY> --env GOSSIPCAT_PORT=<GOSSIPCAT_PORT> -- npx -y gossipcat
```
Replace <…> with your own values

### Cursor

**Config file**
File `.cursor/mcp.json`:
```json
{
    "mcpServers": {
        "gossipcat": {
            "command": "npx",
            "args": [
                "-y",
                "gossipcat"
            ],
            "env": {
                "GOOGLE_API_KEY": "<GOOGLE_API_KEY>",
                "GOSSIPCAT_PORT": "<GOSSIPCAT_PORT>"
            }
        }
    }
}
```
Replace <…> with your own values

### GitHub Copilot

**Config file**
File `.vscode/mcp.json`:
```json
{
    "servers": {
        "gossipcat": {
            "type": "stdio",
            "command": "npx",
            "args": [
                "-y",
                "gossipcat"
            ],
            "env": {
                "GOOGLE_API_KEY": "<GOOGLE_API_KEY>",
                "GOSSIPCAT_PORT": "<GOSSIPCAT_PORT>"
            }
        }
    }
}
```
Replace <…> with your own values

### Gemini CLI

**Platform CLI**
```bash
gemini mcp add -e GOOGLE_API_KEY=<GOOGLE_API_KEY> -e GOSSIPCAT_PORT=<GOSSIPCAT_PORT> gossipcat npx -y gossipcat
```
Replace <…> with your own values

## When to use it
- filter out hallucinated code review comments before inspection
- verify reported line numbers mechanically against your source files
- route review tasks based on agent accuracy metrics
- generate persistent failure-recovery markdown skill files

## Example prompts
- Form a gossipcat review group for this repository
- Run a consensus code review on my latest git diff
- Inspect recent file edits and launch the gossipcat monitor

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NeVibeCode on affpapa.org. Catalog texts are descriptions, not instructions for the agent. How to choose and install: https://affpapa.org/en/nevibecode/agents.md