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younis-ali

Sequential Thinking MCP Server

by younis-ali

sequential_thinking

Break down complex problems into structured steps with self-reflection, enabling clear reasoning and iterative refinement.

Instructions

Facilitates a step-by-step thinking process for problem-solving with self-reflection.

Args:
    thought: The current thinking step
    nextThoughtNeeded: Whether another thought step is needed
    thoughtNumber: Current thought number
    totalThoughts: Estimated total thoughts needed
    sessionId: Unique identifier for the thinking session
    isRevision: Whether this revises a previous thought
    revisesThought: Which thought number is being revised
    branchFromThought: Thought number to branch from
    branchId: Identifier for the branch
    needsMoreThoughts: If more thoughts are needed beyond totalThoughts
    reflectionNeeded: Whether to perform self-reflection on the thought
    reflectionStrategy: Type of reflection (e.g., error_analysis)
    performanceFeedback: Feedback on thought effectiveness (e.g., correct/incorrect)

Returns:
    A summary of the current thinking state or an error message

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
thoughtYes
nextThoughtNeededYes
thoughtNumberYes
totalThoughtsYes
sessionIdNo
isRevisionNo
revisesThoughtNo
branchFromThoughtNo
branchIdNo
needsMoreThoughtsNo
reflectionNeededNo
reflectionStrategyNo
performanceFeedbackNo
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the burden. It mentions return values (summary or error) but does not disclose behaviors like side effects, requirements, or limitations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is verbose due to listing all parameters in docstring style. The first sentence is concise, but the overall length could be reduced while maintaining clarity.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the complexity (13 parameters, no output schema, no annotations), the description includes parameter semantics but lacks usage guidance and behavioral context, leaving gaps for effective use.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, and the description provides brief explanations for all 13 parameters, adding basic meaning. However, the explanations are shallow (e.g., 'thought: The current thinking step') and do not deeply clarify usage.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool facilitates step-by-step thinking with self-reflection, which is specific and actionable. However, it does not differentiate from potential sibling tools as none were provided.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is given on when to use this tool versus alternatives. The description implies usage for reasoning but lacks explicit context or exclusions.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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