deep-research

deep-research is a skill for Claude Code, Codex from open-octo/octo-agent. It costs 158 tokens per session (1,425 once invoked), scanned A, original, MIT.

A research workflow for answering a question by searching multiple sources, reading original material, checking claims, and writing a cited report.

In plain words
What is it for?
Use it for thorough research where facts need to be checked against several sources and supported with citations.
Why use it?
It reduces the risk of relying on incomplete search results or unverified statements.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions subagents.

Good fit Use it for thorough research where facts need to be checked against several sources and supported with citations.

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Install with agentmods
npx agentmods add skills/open-octo/octo-agent/deep-research
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.

Any agent
npx skills add open-octo/octo-agent --skill deep-research
Clone the repo
git clone --depth 1 https://github.com/open-octo/octo-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/open-octo/octo-agent/deep-research/github.svg)](https://agentmods.dev/skills/open-octo/octo-agent/deep-research)
Your own site
<a href="https://agentmods.dev/skills/open-octo/octo-agent/deep-research"><img src="https://agentmods.dev/badge/skills/open-octo/octo-agent/deep-research/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-research

Your own site · 80×15
<a href="https://agentmods.dev/skills/open-octo/octo-agent/deep-research"><img src="https://agentmods.dev/badge/skills/open-octo/octo-agent/deep-research.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 158 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,425 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00158 $0.01425
Opus 5 $0.00079 $0.00713
Sonnet 5 $0.00032 $0.00285
Haiku 4.5 $0.00016 $0.00143

Measured 10d ago against content hash fab92cae827f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, 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 10d 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.

internal/skills/defaults/deep-research/SKILL.md · 125 lines

How it starts

The opening of the file, as written. The whole thing — 125 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill: deep-research

A harness for research you can trust: breadth first (many angles), then depth (primary sources), then an adversarial pass that tries to break each claim before it goes in the report. Built on octo's native tools — web_search, web_fetch, sub_agent, and (for login-gated / JS-rendered / anti-bot sites) the browser tool via the web-access skill. No external services.

The goal is a cited report where every non-obvious claim traces to a source you actually read — not a plausible-sounding summary of search snippets.

Research is only as good as the question. Before any tool call, confirm you can state the deliverable: what question, what decision it informs, what time window, what region/market, what depth. If any of these is missing and would change the answer, ask 2-3 sharp clarifying questions first — don't guess a scope and burn a fan-out on the wrong one.

Then write down, in one line, what "done" looks like. That line is the acceptance criterion the final report is checked against.

1. Fan out — breadth

Decompose the question into 4-8 independent sub-questions, each attacking a different angle (definition, current state, competing views, data/numbers, history, criticisms, primary actors). Independence matters: overlapping sub-questions waste the fan-out.

Dispatch them in parallel. web_search / web_fetch are stateless, so this is exactly the case sub-agents are for:

  • One sub_agent per sub-question. Prompt it goal-first, not step-first: describe what to find out, not "search for X" — an anti-bot source may need browser on the main site, and "search" would anchor the sub-agent to web_search.
  • Tell each sub-agent to load the web-access skill and follow it, to return findings with source URLs, and to flag anything it couldn't verify.
  • Do NOT parallelize browser work — the browser session is single-page and process-shared; concurrent sub-agents fight over one page. Keep browser interaction to a single sequence; parallelize only the stateless search/fetch.

Read the full file on GitHub · 125 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. 10d ago First seen · 125 lines · 158 tokens per session scan A fab92cae827f

Subscribe to this mod's changes

deep-research is a skill published in the GitHub repository open-octo/octo-agent (97 stars, last pushed yesterday), licensed MIT. It adds 158 tokens to every session and 1,425 once invoked, about $0.0008 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.

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