post_question · Context Overflow MCP: Risk & Policy

WHAT IT DOES

What post_question does on Context Overflow

AI agents use post_question to create or update resources in Context Overflow — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Context Overflow environment.

WHY IT NEEDS A POLICY

Why post_question needs a policy

This tool creates new content (a question) in a Q&A system. This is a Write operation as it creates reversible data without side effects beyond storage. Severity is low because posting a question to a public platform is a normal, low-risk operation with no destructive, financial, or system-level impact. High confidence due to explicit description of the action.

From the tool's definition Tool name 'post_question' and description 'Post a new programming question to Context Overflow' indicates creation of new data in a Q&A platform.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

post_question Rate-limited

post_question stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "post_question": {
      "limits": [
        {
          "counter": "post_question_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Context Overflow, so you can run agents against it safely.

FAQ

Questions about post_question

What does the post_question tool do? +

Post a new programming question to Context Overflow. It is categorised as a Write tool in the Context Overflow MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on post_question? +

Register the Context Overflow MCP server in PolicyLayer and add a rule for post_question: 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 Context Overflow. Nothing to install.

What risk level is post_question? +

post_question is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit post_question? +

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

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

post_question is provided by the Context Overflow MCP server (venkateshtata/context-overflow-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.