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.
npx skills add rongarede/claude-skills-research --skill deep-thinkgit clone --depth 1 https://github.com/rongarede/claude-skills-researchWrote 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.
[](https://agentmods.dev/skills/rongarede/claude-skills-research/deep-think)<a href="https://agentmods.dev/skills/rongarede/claude-skills-research/deep-think"><img src="https://agentmods.dev/badge/skills/rongarede/claude-skills-research/deep-think/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.
<a href="https://agentmods.dev/skills/rongarede/claude-skills-research/deep-think"><img src="https://agentmods.dev/badge/skills/rongarede/claude-skills-research/deep-think.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00064 | $0.01274 |
| Opus 5 | $0.00032 | $0.00637 |
| Sonnet 5 | $0.00013 | $0.00255 |
| Haiku 4.5 | $0.00006 | $0.00127 |
Grade A, and why
deep-think 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.
How it starts
The opening of the file, as written. The whole thing — 188 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Deep Think
Extended deliberation skill for problems that resist quick answers. Forces multi-step reasoning, considers second-order effects, and produces well-justified conclusions.
Trigger Words
/deep-think- "think deeply about"
- "reason through this"
- "what are the second-order effects"
- "this is a hard problem"
- "deliberate on"
- "think step by step"
When to Use
- Architectural decisions with 6+ month consequences
- Trade-offs where multiple options seem equally valid
- Problems where the obvious answer might be wrong
- Multi-stakeholder decisions with conflicting interests
- Ethical or philosophical dimensions
- Debugging subtle, hard-to-reproduce issues
- Strategy formulation under uncertainty
Core Process
Deep Think Progress:
- [ ] Step 1: Problem decomposition
- [ ] Step 2: Assumption surfacing
- [ ] Step 3: Multi-perspective analysis
- [ ] Step 4: Second-order effects mapping
- [ ] Step 5: Synthesis and conclusion
- [ ] Step 6: Confidence calibration
Step 1: Problem Decomposition
Break the problem into its constituent parts:
## Problem Statement
[Restate the problem in your own words]
## Sub-Problems
1. [Component A] — [why it matters]
2. [Component B] — [why it matters]
3. [Component C] — [why it matters]
## Dependencies
- [A] depends on [B] because...
- [C] is independent of [A/B]
Step 2: Assumption Surfacing
Explicitly list every assumption:
## Assumptions (must be stated explicitly)
| # | Assumption | Type | If Wrong, Impact |
|---|-----------|------|------------------|
| 1 | [assumption] | [factual/value/scope] | [consequence] |
| 2 | [assumption] | [factual/value/scope] | [consequence] |
Challenge each assumption:
- Is this actually true, or do we just believe it?
- What evidence supports/contradicts this?
- What if the opposite were true?
Step 3: Multi-Perspective Analysis
Analyze from at least 3 different viewpoints:
## Perspectives
### Perspective 1: [Role/Viewpoint]
- Sees the problem as: [framing]
- Prioritizes: [values]
- Would decide: [choice]
- Reasoning: [chain]
### Perspective 2: [Role/Viewpoint]
[same structure]
### Perspective 3: Devil's Advocate
- The strongest argument against the emerging consensus is: [argument]
- Evidence supporting this counter-view: [evidence]
- This matters because: [reason]
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.
- 10d ago First seen · 188 lines · 64 tokens per session scan A 6ce2ea76af46
deep-think is a skill published in the GitHub repository rongarede/claude-skills-research (2 stars, last pushed 5mo ago), licensed MIT. It adds 64 tokens to every session and 1,274 once invoked, about $0.0003 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 2026-08-31.
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