Critical Risk →

sequentialthinking

A detailed tool for dynamic and reflective problem-solving through thoughts. This tool helps analyze problems through a flexible thinking process that can adapt and evolve. Each thought can build on, question, or revise previous insights as understanding deepens. When to use this tool: - Breakin...

Single-target operation

Part of the Clear Thought Server MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

ThinkFar/clear-thought-mcp Destructive Risk 4/5

AI agents may call sequentialthinking to permanently remove or destroy resources in Clear Thought Server. Without a policy, an autonomous agent could delete critical data in a loop with no way to undo the damage. Intercept blocks destructive tools by default and requires explicit human approval before enabling them.

Without a policy, an AI agent could call sequentialthinking in a loop, permanently destroying resources in Clear Thought Server. There is no undo for destructive operations. Intercept blocks this tool by default and only allows it when a human explicitly approves the action.

Destructive tools permanently remove data. Block by default. Only enable with explicit approval workflows.

thinkfar-clear-thought-mcp.yaml
tools:
  sequentialthinking:
    rules:
      - action: deny
        reason: "Blocked by default — enable with approval"

See the full Clear Thought Server policy for all 11 tools.

Tool Name sequentialthinking
Category Destructive
Risk Level Critical

View all 11 tools →

Agents calling destructive-class tools like sequentialthinking have been implicated in these attack patterns. Read the full case and prevention policy for each:

Browse the full MCP Attack Database →

Other tools in the Destructive risk category across the catalogue. The same policy patterns (deny, require_approval) apply to each.

sequentialthinking is one of the critical-risk operations in Clear Thought Server. For the full severity-focused view — only the critical-risk tools with their recommended policies — see the breakdown for this server, or browse all critical-risk tools across every MCP server.

What does the sequentialthinking tool do? +

A detailed tool for dynamic and reflective problem-solving through thoughts. This tool helps analyze problems through a flexible thinking process that can adapt and evolve. Each thought can build on, question, or revise previous insights as understanding deepens. When to use this tool: - Breaking down complex problems into steps - Planning and design with room for revision - Analysis that might need course correction - Problems where the full scope might not be clear initially - Problems that require a multi-step solution - Tasks that need to maintain context over multiple steps - Situations where irrelevant information needs to be filtered out You should: 1. Start with an initial estimate of needed thoughts, but be ready to adjust 2. Feel free to question or revise previous thoughts 3. Don't hesitate to add more thoughts if needed, even at the "end" 4. Express uncertainty when present 5. Mark thoughts that revise previous thinking or branch into new paths 6. Ignore information that is irrelevant to the current step 7. Generate a solution hypothesis when appropriate 8. Verify the hypothesis based on the Chain of Thought steps 9. Repeat the process until satisfied with the solution 10. Provide a single, ideally correct answer as the final output 11. Only set next_thought_needed to false when truly done and a satisfactory answer is reached. It is categorised as a Destructive tool in the Clear Thought Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on sequentialthinking? +

Add a rule in your Intercept YAML policy under the tools section for sequentialthinking. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Clear Thought Server MCP server.

What risk level is sequentialthinking? +

sequentialthinking is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit sequentialthinking? +

Yes. Add a rate_limit block to the sequentialthinking rule in your Intercept policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block sequentialthinking completely? +

Set action: deny in the Intercept policy for sequentialthinking. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides sequentialthinking? +

sequentialthinking is provided by the Clear Thought Server MCP server (ThinkFar/clear-thought-mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policies on Clear Thought Server

Open source. One binary. Zero dependencies.

npx -y @policylayer/intercept
github.com/policylayer/intercept →
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