# Deep Research (claude-skills)

> Turns a high-stakes question into falsifiable hypotheses, parallel searches and a triangulated report, with every source saved and quoted.

Deep Research (claude-skills) is a community plugin from Alireza Rezvani's claude-skills collection: the heavyweight research workflow for questions where a wrong answer is expensive. It gives Claude a nine-phase method, a research agent and a /cs-deep-research command, and saves each investigation as a folder you can come back to. The method was contributed by Socialpranker from their MIT-licensed Deepdive project, and it's credited in the plugin.

What it does
- Reframes your question around the decision behind it, with two to four falsifiable hypotheses
- Writes plan.md: scope, sourcing strategy, opposition queries, a risk register and stop criteria
- Checks which search channels and API keys you have, and falls back to plain web pages
- Sends search sub-agents out in parallel and saves each source to its own file, with verbatim quotes
- Scores every source for credibility, recency and bias, and backs each thesis with at least three independent sources of different types, or marks it "insufficient evidence"
- Runs an adversarial pass with steel-manned counter-arguments, then a light citation check
- Writes refresh_targets.md, so a later "update <slug>" run produces a delta instead of starting over

What you get
A folder with plan.md, sources.csv, one file per source, findings, the final report and refresh_targets.md.

When to use it
- Strategy work, a business plan, or the groundwork for a report or article
- Comparing several products, methods, markets or institutions with reasoning you can defend
- Validating a hypothesis or a decision against outside data
- Mapping how a field works
It isn't meant for quick fact checks or fast overviews; the same collection's research router covers those.

How to install it
In Claude Code, run /plugin marketplace add alirezarezvani/claude-skills, then /plugin install deep-research@claude-code-skills. Run it with /cs-deep-research and your question, or ask for "deep research on" a topic.

Good to know
- It's a method, not a data source: it searches with your agent's own web search and fetch tools, plus any APIs you already have keys for.
- It trades tokens for rigor: its agent is set to Opus and runs several search sub-agents at once.
- The full source catalog (search channels, statistical sources, APIs and report blocks) lives in Socialpranker's upstream project, which the skill points to.
- It's a community plugin, MIT-licensed.

- Type: Plugin
- Made by: alirezarezvani
- Category: Research
- Formats: Claude plugins
- Version: latest
- Website: https://github.com/alirezarezvani/claude-skills/tree/main/research/deep-research
- Source: https://github.com/alirezarezvani/claude-skills/tree/HEAD/research/deep-research
- Page: https://pluginboard.ai/plugins/deep-research-alirezarezvani

## Works with

- Claude
- GitHub Copilot
- Claude Code
- OpenClaw

## Install

### Claude

In Claude (web or desktop): Customize → Plugins → Add → Add marketplace, enter alirezarezvani/claude-skills, then add deep-research

### Claude Code

In Claude Code:

```text
/plugin marketplace add alirezarezvani/claude-skills
/plugin install deep-research@claude-code-skills
```

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From Pluginboard (https://pluginboard.ai).