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 GiangGiangTran/ba-skills --skill critical-thinkinggit clone --depth 1 https://github.com/GiangGiangTran/ba-skillsWrote 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/gianggiangtran/ba-skills/critical-thinking)<a href="https://agentmods.dev/skills/gianggiangtran/ba-skills/critical-thinking"><img src="https://agentmods.dev/badge/skills/gianggiangtran/ba-skills/critical-thinking/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/gianggiangtran/ba-skills/critical-thinking"><img src="https://agentmods.dev/badge/skills/gianggiangtran/ba-skills/critical-thinking.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 | $0.00041 | $0.01702 |
| Opus 5 | $0.00020 | $0.00851 |
| Sonnet 5 | $0.00008 | $0.00340 |
| Haiku 4.5 | $0.00004 | $0.00170 |
Grade A, and why
critical-thinking 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 12d 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 — 279 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Critical Thinking for BA
Master the BA's core skill: analyzing problems logically and rigorously.
What is Critical Thinking for BA?
Definition: Disciplined process of actively analyzing, evaluating, and synthesizing information to reach well-reasoned conclusions and identify root causes.
When to Use:
- ✅ Analyzing complex business problems
- ✅ Breaking down vague requirements into specific issues
- ✅ Testing assumptions before major decisions
- ✅ Evaluating competing proposals fairly
- ✅ Identifying root causes vs symptoms
- ✅ Building logical arguments for stakeholders
5 Core Thinking Frameworks
1. Root Cause Analysis (5 Whys)
Dig deeper to find real cause, not symptoms.
Process:
Problem: "Users complaining about slow system"
Why 1: Why is system slow?
→ Database queries taking too long
Why 2: Why are queries slow?
→ Missing indexes on common queries
Why 3: Why missing indexes?
→ Database optimization not prioritized
Why 4: Why not prioritized?
→ Performance metrics not tracked
Why 5: Why not tracked?
→ No performance SLA defined
Root Cause: Missing performance SLA and monitoring
When: When initial problem seems obvious but may not be the real issue
See: references/root-cause-analysis.md
2. Logical Argumentation (Toulmin Model)
Build arguments that stakeholders can follow and challenge.
Structure:
CLAIM: "We should build feature X"
EVIDENCE:
- 60% of users requested this
- Competitors have it
- User testing shows $50K annual value
WARRANT (Why evidence supports claim):
- User research is reliable indicator
- Competitor feature validates market need
- Financial impact is material
COUNTER-ARGUMENT:
- Effort: 3 months development
- Risk: Integration complexity
CONCLUSION:
- Benefits outweigh costs
- Recommend proceeding
When: Presenting proposals to decision-makers
See: references/logical-argumentation.md
3. Assumption Testing (Lean Startup)
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.
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.
- 12d ago First seen · 279 lines · 41 tokens per session scan A 62dbed560101
critical-thinking is a skill published in the GitHub repository GiangGiangTran/ba-skills (6 stars, last pushed 7mo ago), licensed MIT. It adds 41 tokens to every session and 1,702 once invoked, about $0.0002 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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