# crowdcast

Runs local multi-agent simulations inside Claude Code to forecast public reactions or test creative storylines directly from uploaded documents.

- plugin · `type=plugin` · Claude Code · ★ 13 repo stars
- Author: TheQmaks
- License: not stated · policy=link-only · description only; the file stays with the author
- Source: https://github.com/TheQmaks/crowdcast
- Updated: 2026-05-08
- HTML: https://affpapa.org/en/nevibecode/plugins/crowdcast

## What it does

crowdcast turns text documents into interactive multi-agent environments. Supply an article or draft chapter alongside a target query, and the tool extracts key entities. It generates profiles with distinct viewpoints and begins multi-round discussions. Core personas reason separately, while crowd dynamics update in batches.

Execution relies on dedicated subagents for document review, persona drafting, simulation, and report compilation. Each step writes progress to JSON files inside `.crowdcast/simulations/`. If a run gets interrupted, the resume command recovers state from the last checkpoint.

Scale caps at roughly 100 agents due to context boundaries. It cannot handle massive populations like dedicated cluster engines, but it avoids Docker setups and paid third-party APIs. Everything executes within your standard Claude subscription.

## Install

### Claude Code (native platform)

**Plugin marketplace**
In the agent chat (not a shell):
```text
/plugin marketplace add anthropics/claude-plugins-community
```
In the agent chat (not a shell):
```text
/plugin install crowdcast@claude-community
```

## When to use it
- forecast audience reactions to policy or product announcements
- simulate multi-character story branches from rough narrative drafts
- interview simulated participants directly inside the terminal
- generate analytical prediction summaries from structured discussion logs

## Example prompts
- /crowdcast simulate ./brief.pdf "How will small businesses react to these regulations?"
- /crowdcast simulate ./story.txt --mode=creative "Continue the scene after the breach"
- /crowdcast interview sim_a3f8b2c91d04 mayor_chen

## Similar
- [mirofish-offline-simulation](https://affpapa.org/en/nevibecode/skills/mirofish-offline-simulation.md) — skill · 1400 installs
- [future-scenario-generator](https://affpapa.org/en/nevibecode/commands/future-scenario-generator.md) — command · 222 installs
- [business-analyst](https://affpapa.org/en/nevibecode/agents/business-analyst.md) — subagent · 3855 installs
- [FutureSearch MCP Server](https://affpapa.org/en/nevibecode/mcp/futuresearch-mcp-server.md) — MCP server · ★ 57 repo stars
- [oraclaw](https://affpapa.org/en/nevibecode/mcp/oraclaw.md) — MCP server · ★ 13 repo stars
- [trend-analyst](https://affpapa.org/en/nevibecode/agents/trend-analyst.md) — subagent · 753 installs

---
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