Sequential Thinking MCP Server

MCP Server Configuration

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{
  "mcpServers": {
    "sequential-thinking": {
      "command": "npx",
      "args": ["-y", "@anthropic-ai/mcp-sequential-thinking"]
    }
  }
}

Available Tools

Tool	Description
sequentialthinking	Create a thought sequence with dynamic step management

Tool Parameters

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{
  "thought": "string — The current thinking step content",
  "nextThoughtNeeded": "boolean — Whether more thinking is needed",
  "thoughtNumber": "integer — Current step number (starts at 1)",
  "totalThoughts": "integer — Estimated total steps (can be revised)",
  "isRevision": "boolean (optional) — Whether this revises an earlier thought",
  "revisesThought": "integer (optional) — Which thought number is being revised",
  "branchFromThought": "integer (optional) — Branch from an earlier thought",
  "branchId": "string (optional) — Identifier for the branch"
}

Setup

1. Add the configuration above to your .claude/settings.json under mcpServers
2. No API keys or environment variables required
3. The server runs locally via npx — no installation needed

Use Cases

• Complex debugging — Step through problem analysis, revise hypotheses
• Architecture decisions — Evaluate options systematically, branch to explore alternatives
• Algorithm design — Build solutions incrementally, backtrack when needed
• Planning — Break large tasks into sequential steps with dependencies

Security Notes

• Runs entirely locally — no external API calls
• No data persistence between sessions
• No file system access — purely computational
• Safe to use in any environment