How does this server differ from tools that auto‑select tools?
It does not discover or choose tools for the model. It only records thoughts and validates that recommended tool names exist in the supplied `available_tools` list.
MCP Sequentialthinking Tools
@spences10
Basic information
About MCP Sequentialthinking Tools
🧠 An adaptation of the MCP Sequential Thinking Server to guide tool usage. This server provides recommendations for which MCP tools would be most effective at each stage.
MCP Sequentialthinking Tools config
Add this server to your MCP-compatible client using the configuration below.
{
"mcpServers": {
"mcp-sequentialthinking-tools": {
"command": "npx",
"args": [
"-y",
"mcp-sequentialthinking-tools"
],
"env": {
"MAX_HISTORY_SIZE": "1000"
}
}
}
}MCP Sequentialthinking Tools tools
3Record one step of sequential reasoning. Optionally include available_tools and recommended_tools; recommendations are validated, not generated, by this server.
Return recorded thoughts for a session. Use this to inspect or resume prior reasoning.
Clear recorded sequential-thinking history for one session or all sessions.
Overview
What is mcp-sequentialthinking-tools?
A lightweight MCP server for recording sequential reasoning steps. It functions as a scratchpad with history, branching, revision metadata, and optional validation for model-authored tool plans. It does not discover other MCP tools or choose tools for the model.
How to use mcp-sequentialthinking-tools?
Install and configure via npx -y mcp-sequentialthinking-tools in your MCP client settings (e.g., Claude Desktop). Optionally set the MAX_HISTORY_SIZE environment variable (default 1000 per session). Use the provided sequentialthinking_tools, get_thinking_history, and clear_thinking_history tools, and optionally include the sequential-thinking-guidance prompt.
Key features of mcp-sequentialthinking-tools
- Records sequential thoughts with step numbering and estimates.
- Supports branching and revision of reasoning steps.
- Validates model‑recommended tool names against a supplied list.
- Sessions isolate history; defaults to
"default". - Security filtering redacts prompt‑injection‑like text.
- History retrieval and clearing via dedicated tools.
Use cases of mcp-sequentialthinking-tools
- Breaking a messy problem into inspectable reasoning steps.
- Revising or branching a plan during complex tasks.
- Keeping a small reasoning history by session.
- Validating tool‑plan names against a known tool list.
- Clearing or inspecting reasoning history during a long agent run.
Frequently asked questions
What runtime dependencies are required?
The server runs on Node.js and is invoked via `npx`. It uses the `tmcp` library for MCP transport.
Where is the thinking history stored?
History is kept in memory per session. The maximum number of entries per session is configurable via the `MAX_HISTORY_SIZE` environment variable (default 1000).
What security measures are included?
Thought text, tool descriptions, rationales, and remaining‑step text are scanned for prompt‑injection‑like content. Matching fields are redacted before storage or retrieval, and calls with redactions include `security_warnings`.
What transports does the server support?
It uses a stdio transport that accepts both standard `Content‑Length` framed MCP messages and newline‑delimited JSON used by older `tmcp` tooling.
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