Low Risk

screen_canslim

Screen for growth stocks matching CANSLIM criteria.

How to control screen_canslim ↓

What screen_canslim does on Momentum

AI agents call screen_canslim to retrieve information from Momentum without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Low Risk

Why screen_canslim needs a policy

This is a stock screening tool that retrieves and filters financial data based on predefined technical and fundamental criteria (CANSLIM). It returns analytical results to inform decision-making but performs no irreversible actions, does not execute trading operations, and does not modify any underlying data.

From the tool's definition Tool performs screening and analysis of stocks against CANSLIM criteria—a passive data retrieval and filtering operation.

Documented attack patterns abuse exactly the kind of access screen_canslim gives an agent:

How to control screen_canslim

PolicyLayer is an MCP gateway — it sits between your AI agents and Momentum, and nothing reaches the server without passing your rules. This is the rule we recommend for screen_canslim:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "screen_canslim": {}
  }
}

screen_canslim is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

  1. Create a free account and register Momentum — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
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Free to start. No card required.

Related tools and policies

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Questions about screen_canslim

What does the screen_canslim tool do? +

Screen for growth stocks matching CANSLIM criteria. It is categorised as a Read tool in the Momentum MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on screen_canslim? +

Register the Momentum MCP server in PolicyLayer and add a rule for screen_canslim: 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 Momentum. Nothing to install.

What risk level is screen_canslim? +

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

Can I rate-limit screen_canslim? +

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

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

screen_canslim is provided by the Momentum MCP server (mphinance/momentum-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Momentum tool call.

Start from Momentum, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

Free to start. No card required.

52 Momentum tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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