add_web_search_evidence · Professor Fit MCP: Risk & Policy

WHAT IT DOES

What add_web_search_evidence does on Professor Fit MCP

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

WHY IT NEEDS A POLICY

Why add_web_search_evidence needs a policy

The name implies a write operation — adding web search evidence to a professor profile or ranking record. Without a description, confidence is low, but 'add_' prefix strongly implies creating/modifying data rather than purely reading it. Severity is medium because misuse could corrupt professor profiles or rankings used by PhD applicants.

From the tool's definition Tool name 'add_web_search_evidence' suggests adding/writing evidence data; description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_web_search_evidence Rate-limited

add_web_search_evidence 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": {
    "add_web_search_evidence": {
      "limits": [
        {
          "counter": "add_web_search_evidence_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 Professor Fit MCP, so you can run agents against it safely.

FAQ

Questions about add_web_search_evidence

What does the add_web_search_evidence tool do? +

add_web_search_evidence. It is categorised as a Write tool in the Professor Fit MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on add_web_search_evidence? +

Register the Professor Fit MCP server in PolicyLayer and add a rule for add_web_search_evidence: 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 Professor Fit MCP. Nothing to install.

What risk level is add_web_search_evidence? +

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

Can I rate-limit add_web_search_evidence? +

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

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

add_web_search_evidence is provided by the Professor Fit MCP server (wrennnn2/professorfitmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.