Automated summary
This skill provides a structured reasoning framework through the Sequential Thinking MCP and UltraThink mode for decomposing complex problems and making architecture decisions.
Strengths
- Defines clear activation triggers (architecture decisions touching 3+ files, technology selection, performance vs maintainability trade-offs) so the agent knows when to start sequential analysis
- Documents the tool parameters in detail, including revision (isRevision, revisesThought) and branching to alternatives (branchFromThought, branchId)
- Describes a four-step UltraThink process running from request analysis to mapping subtasks onto agents and choosing an execution strategy
- Uses progressive disclosure to keep token cost low (level 1 at roughly 100 tokens)
Limitations
- The skill is not user-invocable (user-invocable: false), so it relies on automatic triggers or the --ultrathink flag
- It requires the Sequential Thinking MCP server to be installed and exposed within Claude Code
- It produces no code or direct artifact: it structures reasoning only, and output quality depends on how well totalThoughts is estimated
Use it when a task involves an architecture decision, a technology trade-off, or the decomposition of a multi-domain problem before implementation begins.
Avoid it for small, localized edits or obvious fixes where sequential reasoning adds latency without benefit.
Security analysis
SafeThe skill only documents a structured reasoning workflow using the Sequential Thinking MCP tool alongside Read/Grep/Glob. It contains no destructive commands, credential exfiltration, network calls, obfuscated payloads, or attempts to disable safety mechanisms.
No concerns found
How this analysis is madeExamples
Refactor the API layer to support versioned endpoints --ultrathinkWe need to pick between PostgreSQL and MongoDB for our event store; think through the trade-offs step by step before recommending one.This authentication redesign will touch more than three files — break down the problem and analyze the architecture implications before we start.name: moai-workflow-thinking description: > Sequential Thinking MCP and UltraThink mode for deep analysis, complex problem decomposition, and structured reasoning workflows license: Apache-2.0 compatibility: Designed for Claude Code allowed-tools: Read Grep Glob mcp__sequential-thinking__sequentialthinking user-invocable: false metadata: version: "1.0.0" category: "workflow" status: "active" modularized: "false"
MoAI Extension: Progressive Disclosure
progressive_disclosure: enabled: true level_1_tokens: 100 level_2_tokens: 3000
MoAI Extension: Triggers
triggers: keywords: - sequential thinking - ultrathink - deep analysis - complex problem - architecture decision - technology selection - trade-off - breaking change phases: - plan agents: - manager-strategy - manager-spec
Sequential Thinking & UltraThink
Structured reasoning system for complex problem analysis and decision-making.
Activation Triggers
Use Sequential Thinking MCP when:
- Breaking down complex problems into steps
- Planning and design with room for revision
- Architecture decisions affect 3+ files
- Technology selection between multiple options
- Performance vs maintainability trade-offs
- Breaking changes under consideration
- Multiple approaches exist to solve the same problem
- Repetitive errors occur
Tool Parameters
Required Parameters:
thought(string): Current thinking step contentnextThoughtNeeded(boolean): Whether another step is neededthoughtNumber(integer): Current thought number (starts from 1)totalThoughts(integer): Estimated total thoughts needed
Optional Parameters:
isRevision(boolean): Whether this revises previous thinkingrevisesThought(integer): Which thought is being reconsideredbranchFromThought(integer): Branching point for alternativesbranchId(string): Branch identifierneedsMoreThoughts(boolean): If more thoughts needed beyond estimate
Usage Pattern
Step 1 - Initial Analysis:
thought: "Analyzing the problem: [describe problem]"
nextThoughtNeeded: true
thoughtNumber: 1
totalThoughts: 5
Step 2 - Decomposition:
thought: "Breaking down: [sub-problems]"
nextThoughtNeeded: true
thoughtNumber: 2
totalThoughts: 5
Step 3 - Revision (if needed):
thought: "Revising thought 2: [correction]"
isRevision: true
revisesThought: 2
thoughtNumber: 3
totalThoughts: 5
nextThoughtNeeded: true
Final Step - Conclusion:
thought: "Conclusion: [final answer]"
thoughtNumber: 5
totalThoughts: 5
nextThoughtNeeded: false
UltraThink Mode
Enhanced analysis mode activated by --ultrathink flag.
Activation:
"Implement authentication system --ultrathink"
"Refactor the API layer --ultrathink"
Process:
- Request Analysis: Identify core task, detect keywords, recognize complexity
- Sequential Thinking: Begin structured reasoning
- Execution Planning: Map subtasks to agents, identify parallel opportunities
- Execution: Launch agents, integrate results
UltraThink Parameters:
Initial Analysis:
thought: "Analyzing user request: [content]"
nextThoughtNeeded: true
thoughtNumber: 1
totalThoughts: [estimate]
Subtask Decomposition:
thought: "Breaking down: 1) [task1] 2) [task2] 3) [task3]"
nextThoughtNeeded: true
thoughtNumber: 2
Agent Mapping:
thought: "Mapping: [task1] → expert-backend, [task2] → expert-frontend"
nextThoughtNeeded: true
thoughtNumber: 3
Execution Strategy:
thought: "Strategy: [tasks1,2] parallel, [task3] depends on [task1]"
nextThoughtNeeded: true
thoughtNumber: 4
Final Plan:
thought: "Plan: Launch [agents] in parallel, then [agent]"
nextThoughtNeeded: false
When to Use
UltraThink is ideal for:
- Complex multi-domain tasks (backend + frontend + testing)
- Architecture decisions affecting multiple files
- Performance optimization requiring analysis
- Security review needs
- Refactoring with behavior preservation
Benefits:
- Structured decomposition of complex problems
- Explicit agent-task mapping with justification
- Identification of parallel execution opportunities
- Context maintenance throughout reasoning
- Revision capability when approaches need adjustment
Guidelines
- Start with reasonable totalThoughts estimate
- Use isRevision when correcting previous thoughts
- Maintain thoughtNumber sequence
- Set nextThoughtNeeded to false only when complete
- Use branching for exploring alternatives
From the file to a first result
The download contains exactly the content displayed on this page. This copy may differ from the latest version in the source repository.
View the source and supporting filesThis download contains SKILL.md only. Any scripts, references, templates and dependencies are not included. Get the required files from the source, preserving their directory structure, before continuing.
1. Download the file
Download SKILL.mdFrom the root of a test project, save the file as .skill-downloads/sequential-thinking-ultrathink-mmlj2nxm/SKILL.md, or use the command below. This folder is for inspecting the skill before installation.
Command for macOS/Linux or WSL: requires a POSIX shell and curl. On Windows without WSL, use the download button and create the folder manually.
mkdir -p '.skill-downloads/sequential-thinking-ultrathink-mmlj2nxm' && curl --fail --show-error --location 'https://skills-guides.com/api/skills/sequential-thinking-ultrathink-mmlj2nxm/download' --output '.skill-downloads/sequential-thinking-ultrathink-mmlj2nxm/SKILL.md.part' && mv '.skill-downloads/sequential-thinking-ultrathink-mmlj2nxm/SKILL.md.part' '.skill-downloads/sequential-thinking-ultrathink-mmlj2nxm/SKILL.md'2. Check prerequisites
Read SKILL.md before using it. If it references scripts or external services, inspect them and prepare the required access in your test environment.
Environment declared by the author: Designed for Claude Code
Tools declared by the author (check availability in your agent): Read Grep Glob mcp__sequential-thinking__sequentialthinking
No recognized prerequisites section in this file. This does not mean it is self-contained: libraries, tools and access requirements may be mentioned elsewhere in the content or source repository.
The platforms on this page are catalog indications. The paths below follow tool documentation; they do not prove this skill has been run in those tools. No minimum tool version is confirmed for this listing.
3. Load the skill
After inspection, copy the complete folder into your project using one of the commands below, then open a new tool session. The command stops if a folder with the same name already exists: compare the files before replacing it.
Claude Code
test -f '.skill-downloads/sequential-thinking-ultrathink-mmlj2nxm/SKILL.md' && test -s '.skill-downloads/sequential-thinking-ultrathink-mmlj2nxm/SKILL.md' && mkdir -p '.claude/skills' && test ! -e '.claude/skills/moai-workflow-thinking' && cp -R '.skill-downloads/sequential-thinking-ultrathink-mmlj2nxm' '.claude/skills/moai-workflow-thinking'OpenSkills
OpenSkills must already be installed. The local install/read procedure is checked with OpenSkills 1.5.0, which requires Node.js ≥ 20.6.0. Catalog slugs are not resolved automatically.
Official OpenSkills installationopenskills install './.skill-downloads/sequential-thinking-ultrathink-mmlj2nxm'openskills read 'sequential-thinking-ultrathink-mmlj2nxm'Reading should display the installed file content and its base directory. It does not run the skill or install its dependencies.
For an agent that reads AGENTS.md, then sync the index. This command changes AGENTS.md: review the diff before using it.
openskills syncManual method or another tool: attach SKILL.md to a conversation, or open it in an agent that can read files. Include any required supporting resources. No universal folder is recognized by every tool.
4. Try a first task
Use a short, synthetic input: an API endpoint, a small document or an interface brief. In a new conversation, attach the file or give the agent its path, then adapt this request:
Read .skill-downloads/sequential-thinking-ultrathink-mmlj2nxm/SKILL.md and apply its instructions to this example: [describe a test input]. Identify any missing files, dependencies or access. Produce the result requested by the skill without inventing data or running unreviewed scripts.Expected result: output matching the skill instructions, or a precise list of missing prerequisites. A read confirmation alone does not validate a first use. If an external resource is unavailable, that path remains untested.
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