# Deep Research

> Multi-source research with source triangulation and fact-checking. Use for any research task requiring 3+ sources.

- Skill: `firecrawl/deep-research` (Agent Skill)
- Install (CLI): `npx skillmds@latest add firecrawl/deep-research`
- Raw SKILL.md: https://api.skillmd.com/api/skills/firecrawl/deep-research/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: firecrawl (https://skillmd.com/u/firecrawl)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/firecrawl/deep-research

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# Deep Research

## Search Strategy
- Break the topic into 3-5 distinct angles
- 2-3 queries per angle using different terminology
- Use `site:` operator for targeted searches (e.g. `site:arxiv.org`, `site:github.com`)
- Include official, comparison, and review-oriented queries
- Aim for 5-10 unique, high-quality sources

## Extraction
- Scrape each source with a targeted query parameter -- don't dump full pages into context
- Extract: key claims, data points, dates, attributed quotes
- Record author, publication, date, and URL for every source

## Fact-Checking
- Cross-reference claims across 2+ sources
- Flag single-source claims explicitly
- Assign confidence: high (3+ sources agree), medium (2), low (1 or conflicting)
- Include contrarian viewpoints -- don't confirmation-bias the results

## Output
- Structure by subtopic, not by source
- Inline citations for every claim
- Call formatOutput with the structured data