deep-research

deep-research is a skill for Claude Code, Codex from fuyuxiang/echo-agent. It costs 21 tokens per session (450 once invoked), scanned A, original, MIT.

A structured research workflow that searches for information, reads sources, compares claims, and produces a report with citations. It supports quick, normal, and deeper research levels.

In plain words
What is it for?
Breaking down research questions, finding and extracting relevant sources, checking disagreements, and writing cited reports.
Why use it?
It provides a repeatable way to investigate a question using multiple sources and show where the findings came from.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/fuyuxiang/echo-agent/deep-research
Any agent
npx skills add fuyuxiang/echo-agent --skill deep-research
Clone the repo
git clone --depth 1 https://github.com/fuyuxiang/echo-agent

Made for: Claude Code, Codex.

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-research

README.md
[![agentmods](https://agentmods.dev/badge/skills/fuyuxiang/echo-agent/deep-research.svg)](https://agentmods.dev/skills/fuyuxiang/echo-agent/deep-research)
Your own site
<a href="https://agentmods.dev/skills/fuyuxiang/echo-agent/deep-research"><img src="https://agentmods.dev/badge/skills/fuyuxiang/echo-agent/deep-research.svg" alt="Measured on agentmods" height="20"></a>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 450 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00021 $0.00450
Opus 5 $0.00010 $0.00225
Sonnet 5 $0.00004 $0.00090
Haiku 4.5 $0.00002 $0.00045

Measured 4d ago against content hash 240e368e2bc5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

deep-research 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 4d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/research_report.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/research/deep-research/SKILL.md · 75 lines

What it actually says

Deep Research

Multi-step research workflow that produces cited reports from multiple sources.

Workflow

  1. Decompose — Break the question into 3-5 sub-questions
  2. Search — Run multiple searches per sub-question (diverse keywords)
  3. Extract — Fetch and extract content from top URLs
  4. Cross-reference — Compare claims across sources, flag conflicts
  5. Synthesize — Write structured report with inline citations

Usage

python3 scripts/research_report.py "What are the best practices for LLM agent memory in 2026?"
python3 scripts/research_report.py "Compare FastAPI vs Litestar performance" --depth deep

Output Format

Reports follow this template:

# Research Report: {Topic}

**Date:** YYYY-MM-DD
**Sources consulted:** N

## Summary
2-3 sentence overview of findings.

## Key Findings

### Finding 1
Detail with evidence. [Source 1][1] confirms that...

### Finding 2
...

## Conflicting Information
Where sources disagree, note both positions.

## Conclusion
Actionable synthesis.

## Sources
[1]: https://... — Title
[2]: https://... — Title

Depth Levels

Level Searches Pages Read Time
quick 2-3 3-5 ~30s
normal 5-8 8-12 ~2min
deep 10-15 15-25 ~5min

Combining with Other Skills

  • Use web-search for the search step
  • Use web-extract for the extraction step
  • Use summarize skill for per-page summaries before synthesis
  • Store results with note-taking skill
Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 4d ago First seen · 75 lines · 21 tokens per session scan A 240e368e2bc5

Subscribe to this mod's changes

deep-research is a skill published in the GitHub repository fuyuxiang/echo-agent (988 stars, last pushed 4d ago), licensed MIT. It adds 21 tokens to every session and 450 once invoked, about $0.0001 per session on Opus 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 2026-08-30.