emit_invariant_model

Emit the EXPLICIT, STRUCTURED invariant model for each key object in the subsystem: lock discipline, refcount balance, lifetime rules, init-order. This is a MODEL, not a bug report — do not hunt bugs here; describe the rules the code is SUPPOSED to uphold so a separate deterministic checker can f...

SERVER0sec SOURCE0sec-labs/0sec

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/0sec/emit-invariant-model.md

WHAT IT DOES

What emit_invariant_model does on 0sec

AI agents call emit_invariant_model to retrieve information from 0sec without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why emit_invariant_model is rated Low

Even though emit_invariant_model only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs emit_invariant_model safely

PolicyLayer is an MCP gateway: it sits between your AI agents and 0sec, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For emit_invariant_model, this is the rule to start with:

emit_invariant_model Allowed

emit_invariant_model is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "emit_invariant_model": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect 0sec, apply this rule, and every emit_invariant_model call is checked against it from then on.

FAQ

Questions about emit_invariant_model

What does the emit_invariant_model tool do? +

How do I enforce a policy on emit_invariant_model? +

Register the 0sec MCP server in PolicyLayer and add a rule for emit_invariant_model: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches 0sec. Nothing to install.

What risk level is emit_invariant_model? +

emit_invariant_model is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit emit_invariant_model? +

Yes. Add a rate_limit block to the emit_invariant_model rule in your PolicyLayer 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 emit_invariant_model completely? +

Set action: deny in the PolicyLayer policy for emit_invariant_model. 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 emit_invariant_model? +

emit_invariant_model is provided by the 0sec MCP server (0sec-labs/0sec). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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