Calculate Piotroski F-Score (0-9) evaluating financial strength. Scores 9 fundamental criteria including profitability, leverage, liquidity, and operating efficiency. Args: symbol: Ticker symbol
AI agents call piotroski_score to retrieve information from Trading Skills without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a read-only analysis tool that queries and calculates a standard financial strength indicator. It takes a stock symbol as input and returns a computed score (0-9) based on publicly available fundamental criteria. No data is modified, no code is executed, no financial transactions occur, and no irreversible actions are performed.
From the tool's definition Tool calculates and returns a financial metric (Piotroski F-Score) based on a ticker symbol input. The description indicates it 'evaluates' and 'scores' criteria without modifying, creating, deleting, or executing external operations—it retrieves and…
Documented attack patterns abuse exactly the kind of access piotroski_score gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Trading Skills, and nothing reaches the server without passing your rules. This is the rule we recommend for piotroski_score:
{
"version": "1",
"default": "deny",
"tools": {
"piotroski_score": {}
}
}piotroski_score is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Calculate Piotroski F-Score (0-9) evaluating financial strength. Scores 9 fundamental criteria including profitability, leverage, liquidity, and operating efficiency. Args: symbol: Ticker symbol. It is categorised as a Read tool in the Trading Skills MCP Server, which means it retrieves data without modifying state.
Register the Trading Skills MCP server in PolicyLayer and add a rule for piotroski_score: 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 Trading Skills. Nothing to install.
piotroski_score is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the piotroski_score 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.
Set action: deny in the PolicyLayer policy for piotroski_score. 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.
piotroski_score is provided by the Trading Skills MCP server (staskh/trading_skills). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 35 Trading Skills tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
35 Trading Skills tools catalogued and risk-classified — across an index of 42,500+ MCP servers.