// MCP TOOL REFERENCE

forget

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

nocturnusai-mcp Destructive Risk 4/5

// WHEN AI AGENTS USE THIS TOOL

AI agents may call forget to permanently remove or destroy resources in Nocturnusai. 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.

// WHY ENFORCE A POLICY ON FORGET

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

// RECOMMENDED POLICY

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

ai-nocturnus-logic-server.yaml

tools:
  forget:
    rules:
      - action: deny
        reason: "Blocked by default — enable with approval"

See the full Nocturnusai policy for all 16 tools.

// DETAILS

Tool Name forget

Category Destructive

MCP Server Nocturnusai MCP Server

Risk Level Critical

// MORE NOCTURNUSAI TOOLS

Destructive cleanup Destructive delete_scope Destructive retract_pattern Execute compress Write context Write merge_scope Read aggregate Read ask

View all 16 tools →

// WHAT CAN GO WRONG

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

Browse the full MCP Attack Database →

// OTHER DESTRUCTIVE TOOLS ACROSS MCP SERVERS

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

AbraFlexi contact_delete AbraFlexi evidence_delete AbraFlexi invoice_issued_delete AbraFlexi product_delete Agent Passport System — Cryptographic Identity for AI Agents remove_intent_card Agent Passport System — Cryptographic Identity for AI Agents revoke_delegation

// IN CONTEXT OF CRITICAL RISK

forget is one of the critical-risk operations in Nocturnusai. 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.

// RELATED READING

// FAQ

What does the forget tool do? +

Retract a fact from the knowledge base. Inverse of 'tell'. Side effects: DESTRUCTIVE — triggers cascading retraction of any knowledge derived from this fact via the Truth Maintenance System (irreversible). Auth: requires X-Tenant-ID header; FACT_WRITE permission when auth is enabled. Rate-limited per principal. Errors: VALIDATION_ERROR on bad args (no error if the fact was not present).. It is categorised as a Destructive tool in the Nocturnusai 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 forget? +

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

What risk level is forget? +

forget 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 forget? +

Yes. Add a rate_limit block to the forget 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 forget completely? +

Set action: deny in the Intercept policy for forget. 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 forget? +

forget is provided by the Nocturnusai MCP server (nocturnusai-mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

forget

Enforce policies on Nocturnusai