Agent skill

Deep Research

by firecrawl in firecrawl/web-agent

Runs multi-source web research with a search plan, targeted extraction and cross-checking, rating confidence by how many sources agree and organizing results by subtopic.

MITAuto-check passedResearch & Science

Install Deep Research

skills CLI
$ npx skills add firecrawl/web-agent --skill deep-research -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install firecrawl/web-agent deep-research --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/firecrawl/web-agent.git skills-src && mkdir -p .claude/skills && cp -r skills-src/agent-core/src/skills/definitions/deep-research .claude/skills/deep-research && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
deep-research
GitHub stars
1.2k
Token cost
~278 tokens
SKILL.md length
118 words
Files
1
Skills in repo
6
Repo updated
First seen
Licence
MIT

At a glance

Runs multi-source web research with a search plan, targeted extraction and cross-checking, rating confidence by how many sources agree and organizing results by subtopic.

  • Researching a topic that needs three or more independent sources
  • SKILL.md covers Search Strategy, Extraction, Fact-Checking and Output
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Fact-checking claims by cross-referencing several sources

What it does

The skill lays out a research routine. The topic is broken into three to five distinct angles, each searched with a few queries in different terminology, including site-specific searches and official, comparison and review-oriented queries, aiming for roughly five to ten unique, high-quality sources.

Each source is scraped with a targeted query so full pages do not flood the context, and the agent extracts key claims, data points, dates and attributed quotes while recording the author, publication, date and URL. Claims are cross-referenced across at least two sources, single-source claims are flagged, and confidence is high when three or more sources agree, medium with two and low with one or conflicting reports. Contrarian viewpoints are included to avoid confirmation bias.

Output is organized by subtopic rather than by source, with an inline citation for every claim, and the structured data is passed to a formatOutput call. The description says to use it for any research task that needs three or more sources.

When your agent uses it

  • Researching a topic that needs three or more independent sources
  • Fact-checking claims by cross-referencing several sources
  • Producing a cited research summary organized by subtopic

Example prompts

  • “Research the current state of solid-state batteries using at least three sources and cite each claim.”
  • “Fact-check these claims about remote work productivity across multiple sources.”
  • “Compare the leading open-source vector databases, with confidence ratings for each finding.”

Requirements

  • Web search and page scraping tools
  • A formatOutput tool for the final structured result

What it can do on your machine

Read from SKILL.md and the folder at commit f023adf. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Deep Research loads about 278 tokens when it runs. Until then it costs about 32 tokens; SKILL.md has 118 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~32
When it runs · the whole SKILL.md, loaded when a task matches
~278

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from firecrawl/web-agent at commit f023adf, republished under its MIT licence (© firecrawl). 118 words, ~278 tokens.

Download SKILL.mdSave it as .claude/skills/deep-research/SKILL.md (or your agent's skills folder).
name
deep-research
description
Multi-source research with source triangulation and fact-checking. Use for any research task requiring 3+ sources.
category
Research

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

© firecrawl, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in agent-core/src/skills/definitions/deep-research of firecrawl/web-agent.

Open the folder on GitHubat commit f023adf

Compare with similar skills

Deep Research next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Deep Research compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Deep Research this skillfirecrawl/web-agent1.2k—~278Automated safety check: PassMIT
Deep Research Agent TeamImbad0202/academic-research-skills51k—~13kAutomated safety check: PassCustom licence
Workflow PatternsQuintinShaw/pi-dynamic-workflows554—~827Automated safety check: PassMIT
Net Deep Researchh4444433333/net-deep-research123—~3.3kAutomated safety check: PassMIT
Architect ResearchDanMcInerney/architect-loop626—~2.3kAutomated safety check: PassMIT
Ray Trend Searchimraywang/rayskills160—~2.1kAutomated safety check: PassCustom licence

Similar skills

  • Deep Research Agent Team

    Imbad0202/academic-research-skills

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    51k GitHub stars~13k tokensUpdated 5 days ago
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  • Workflow Patterns

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  • Net Deep Research

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    123 GitHub stars~3.3k tokensUpdated 1 mo ago
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  • Architect Research

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Questions about Deep Research

What does Deep Research do?

Runs multi-source web research with a search plan, targeted extraction and cross-checking, rating confidence by how many sources agree and organizing results by subtopic. The skill lays out a research routine. The topic is broken into three to five distinct angles, each searched with a few queries in different terminology, including site-specific searches and official, comparison and review-oriented queries, aiming for roughly five to ten unique, high-quality sources.

When should I use Deep Research?

Deep Research fits situations like: researching a topic that needs three or more independent sources; fact-checking claims by cross-referencing several sources; producing a cited research summary organized by subtopic.

How do I install Deep Research in Claude Code?

Run `npx skills add firecrawl/web-agent --skill deep-research -a claude-code`. Or copy the skill folder (agent-core/src/skills/definitions/deep-research in firecrawl/web-agent) into .claude/skills/deep-research in your project. Claude Code loads it when a task matches its description.

How do I install Deep Research in Codex?

Run `npx skills add firecrawl/web-agent --skill deep-research -a codex`. Or copy the skill folder (agent-core/src/skills/definitions/deep-research in firecrawl/web-agent) into .agents/skills/deep-research in your project. Codex loads it when a task matches its description.

Can I use Deep Research in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add firecrawl/web-agent --skill deep-research -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/deep-research, .gemini/skills/deep-research, .github/skills/deep-research and .opencode/skills/deep-research in your project.

What does Deep Research need to run?

SKILL.md names no scripts, command-line tools or credentials: Deep Research is instructions for the agent only. Our summary lists: Web search and page scraping tools; A formatOutput tool for the final structured result.

Does Deep Research access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Deep Research safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Deep Research use?

Deep Research is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Deep Research use?

About 278 tokens (SKILL.md is roughly 1.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Deep Research?

Skills that share tags, products or a category with Deep Research: Deep Research Agent Team (Imbad0202/academic-research-skills, 51k stars), Workflow Patterns (QuintinShaw/pi-dynamic-workflows, 554 stars), Net Deep Research (h4444433333/net-deep-research, 123 stars) and Architect Research (DanMcInerney/architect-loop, 626 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Deep Research?

firecrawl (a GitHub organization) maintains it in firecrawl/web-agent, which has 1,240 GitHub stars. The repository holds 6 skills in this directory. The repository was last updated on April 19, 2026.

Source: firecrawl/web-agent on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.