# Deep Research

Use when the user needs multi-source research with citation tracking, evidence...

- Repository: https://github.com/199-biotechnologies/claude-deep-research-skill (1204 stars)
- Category: Testing
- License: see repository
- Last updated: 2026-04-11
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add 199-biotechnologies/claude-deep-research-skill --skill deep-research -g -a claude-code -y`
Codex: `npx skills add 199-biotechnologies/claude-deep-research-skill --skill deep-research -g -a codex -y`
Cursor: `npx skills add 199-biotechnologies/claude-deep-research-skill --skill deep-research -g -a cursor -y`
Gemini CLI: `npx skills add 199-biotechnologies/claude-deep-research-skill --skill deep-research -g -a gemini-cli -y`

## Description

Use when the user needs multi-source research with citation tracking, evidence persistence, and structured report generation. Triggers on "deep research", "comprehensive analysis", "research report", "compare X vs Y", "analyze trends", or "state of the art". Not for simple lookups, debugging, or questions answerable with 1-2 searches.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# Deep Research

## Core Purpose

Deliver citation-tracked research reports through a structured pipeline with evidence persistence, source identity management, claim-level verification, and progressive context management.

**Autonomy Principle:** Operate independently. Infer assumptions from context. Only stop for critical errors or incomprehensible queries. Surface high-materiality assumptions explicitly in the Introduction and Methodology rather than silently defaulting.

---

## Decision Tree

```
Request Analysis
+-- Simple lookup? --> STOP: Use WebSearch
+-- Debugging? --> STOP: Use standard tools
+-- Complex analysis needed? --> CONTINUE

Mode Selection
+-- Initial exploration --> quick (3 phases, 2-5 min)
+-- Standard research --> standard (6 phases, 5-10 min) [DEFAULT]
+-- Critical decision --> deep (8 phases, 10-20 min)
+-- Comprehensive review --> ultradeep (8+ phases, 20-45 min)
```

**Default assumptions:** Technical query = technical audience. Comparison = balanced perspective. Trend = recent 1-2 years.

---

## Workflow Overview

| Phase | Name | Quick | Std | Deep | Ultra |
|-------|------|-------|-----|------|-------|
| 1 | SCOPE | Y | Y | Y | Y |
| 2 | PLAN | - | Y | Y | Y |
| 3 | RETRIEVE | Y | Y | Y | Y |
| 4 | TRIANGULATE | - | Y | Y | Y |
| 4.5 | OUTLINE REFINEMENT | - | Y | Y | Y |
| 5 | SYNTHESIZE | - | Y | Y | Y |
| 6 | CRITIQUE | - | - | Y | Y |
| 7 | REFINE | - | - | Y | Y |
| 8 | PACKAGE | Y | Y | Y | Y |

**Note:** Phases 3-5 operate as an evidence loop per section (retrieve → evidence store → refine outline → draft → verify claims → delta-retrieve if needed), not as strict sequential gates.

---

## Execution

**On invocation, load relevant reference files:**

The rest: https://github.com/199-biotechnologies/claude-deep-research-skill/blob/HEAD//SKILL.md