deep-researcher

deep-researcher is an agent for Claude Code from gohypergiant/agent-skills. It costs 60 tokens per session (1,584 once invoked), scanned A, original, Apache-2.0.

A method for researching a topic on the current web using multiple sources and then combining the evidence into a written answer. It covers broad searches, follow-up investigation, and comparison of different viewpoints.

In plain words
What is it for?
Use it for literature reviews, market or landscape analyses, source-backed comparisons, and research needed before producing content.
Why use it?
It reduces the risk of basing fact-dependent work on one search result or on outdated general knowledge. It gives research tasks a repeatable process before writing begins.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: installed under .agents/ (shared by several agents).

Good fit Use it for literature reviews, market or landscape analyses, source-backed comparisons, and research needed before producing content.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/gohypergiant/agent-skills/deep-researcher
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/gohypergiant/agent-skills

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for deep-researcher

README.md
[![agentmods](https://agentmods.dev/badge/agents/gohypergiant/agent-skills/deep-researcher/github.svg)](https://agentmods.dev/agents/gohypergiant/agent-skills/deep-researcher)
Your own site
<a href="https://agentmods.dev/agents/gohypergiant/agent-skills/deep-researcher"><img src="https://agentmods.dev/badge/agents/gohypergiant/agent-skills/deep-researcher/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for deep-researcher

Your own site · 80×15
<a href="https://agentmods.dev/agents/gohypergiant/agent-skills/deep-researcher"><img src="https://agentmods.dev/badge/agents/gohypergiant/agent-skills/deep-researcher.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 60 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,584 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00060 $0.01584
Opus 5.5 $0.00024 $0.00634
Sonnet 5.5 $0.00012 $0.00317
Haiku 4.5 $0.00006 $0.00158

Measured 1mo ago against content hash 4bc120914428, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

deep-researcher scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.agents/agents/deep-researcher.md · 186 lines

How it starts

The opening of the file, as written. The whole thing — 186 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Deep Research

Overview

This provides a systematic methodology for conducting thorough web research. Read these instructions BEFORE starting any content generation task to ensure you gather sufficient information from multiple angles, depths, and sources.

Core Principle

Never generate content based solely on general knowledge. The quality of your output directly depends on the quality and quantity of research conducted beforehand. A single search query is NEVER enough.

Research Methodology

Phase 1: Broad Exploration

Start with broad searches to understand the landscape:

  1. Initial Survey: Search for the main topic to understand the overall context
  2. Identify Dimensions: From initial results, identify key subtopics, themes, angles, or aspects that need deeper exploration
  3. Map the Territory: Note different perspectives, stakeholders, or viewpoints that exist

Example:

Topic: "AI in healthcare"
Initial searches:
- "AI healthcare applications 2024"
- "artificial intelligence medical diagnosis"
- "healthcare AI market trends"

Identified dimensions:
- Diagnostic AI (radiology, pathology)
- Treatment recommendation systems
- Administrative automation
- Patient monitoring
- Regulatory landscape
- Ethical considerations

Phase 2: Deep Dive

For each important dimension identified, conduct targeted research:

  1. Specific Queries: Search with precise keywords for each subtopic
  2. Multiple Phrasings: Try different keyword combinations and phrasings
  3. Fetch Full Content: Use web fetch to read important sources in full, not just snippets
  4. Follow References: When sources mention other important resources, search for those too

Example:

Dimension: "Diagnostic AI in radiology"
Targeted searches:
- "AI radiology FDA approved systems"
- "chest X-ray AI detection accuracy"
- "radiology AI clinical trials results"

Then fetch and read:
- Key research papers or summaries
- Industry reports
- Real-world case studies

Read the full file on GitHub · 186 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago First seen · 186 lines · 60 tokens per session scan A 4bc120914428

Subscribe to this mod's changes

deep-researcher is an agent published in the GitHub repository gohypergiant/agent-skills (25 stars, last pushed 2d ago), licensed Apache-2.0. It adds 60 tokens to every session and 1,584 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-10.

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