# correlation_matrix A read tool on the MetaTrader5 MCP Server MCP server. Agent View of the PolicyLayer registry record for `correlation_matrix`. HTML page: https://policylayer.com/tools/emerzon-mt-data-mcp/correlation-matrix ## Facts - Tool: `correlation_matrix` - Server: MetaTrader5 MCP Server (`emerzon/mt-data-mcp`) — https://policylayer.com/tools/emerzon-mt-data-mcp.md - Homepage: https://github.com/emerzon/mt-data-mcp - Risk category: Read (Low risk) - Registry record: grade F, identity unverified - Server rate-limited: no - Parameters: 0 - Recommended policy verdict: Allowed ## Example call (MCP tools/call, JSON-RPC 2.0) ```json { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "correlation_matrix", "arguments": {} } } ``` ## Why correlation_matrix is rated Low Correlation matrix computation retrieves and analyzes existing data without modifying, deleting, or executing trades. No side effects or financial transactions involved. The empty description reduces confidence slightly, but the analytical context and naming convention strongly indicate a data analysis (Read) function rather than a trading action (Execute/Financial). From the tool's own definition: "Tool named 'correlation_matrix' with empty description. Based on server context providing 'technical indicators' and sibling tools like 'cointegration_test' and 'causal_discover_signals', this tool computes statistical correlations from market data—a…" ## Use case AI agents call correlation_matrix to retrieve information from MetaTrader5 MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere. ## Recommended policy (PolicyLayer) Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches MetaTrader5 MCP Server: ```json { "version": "1", "default": "deny", "tools": { "correlation_matrix": {} } } ``` ## Other tools on MetaTrader5 MCP Server (81) - `forecast_models_cleanup` — Destructive — https://policylayer.com/tools/emerzon-mt-data-mcp/forecast-models-cleanup.md - `forecast_models_delete` — Destructive — https://policylayer.com/tools/emerzon-mt-data-mcp/forecast-models-delete.md - `forecast_task_cancel` — Destructive — https://policylayer.com/tools/emerzon-mt-data-mcp/forecast-task-cancel.md - `forecast_task_cancel_all` — Destructive — https://policylayer.com/tools/emerzon-mt-data-mcp/forecast-task-cancel-all.md - `forecast_backtest_run` — Execute — https://policylayer.com/tools/emerzon-mt-data-mcp/forecast-backtest-run.md - `forecast_generate` — Execute — https://policylayer.com/tools/emerzon-mt-data-mcp/forecast-generate.md - `forecast_task_wait` — Execute — https://policylayer.com/tools/emerzon-mt-data-mcp/forecast-task-wait.md - `forecast_train` — Execute — https://policylayer.com/tools/emerzon-mt-data-mcp/forecast-train.md - `forecast_tune_genetic` — Execute — https://policylayer.com/tools/emerzon-mt-data-mcp/forecast-tune-genetic.md - `forecast_tune_optuna` — Execute — https://policylayer.com/tools/emerzon-mt-data-mcp/forecast-tune-optuna.md - `options_heston_calibrate` — Execute — https://policylayer.com/tools/emerzon-mt-data-mcp/options-heston-calibrate.md - `strategy_backtest` — Execute — https://policylayer.com/tools/emerzon-mt-data-mcp/strategy-backtest.md - `strategy_validate` — Execute — https://policylayer.com/tools/emerzon-mt-data-mcp/strategy-validate.md - `wait_event` — Execute — https://policylayer.com/tools/emerzon-mt-data-mcp/wait-event.md - `forecast_barrier_optimize` — Financial — https://policylayer.com/tools/emerzon-mt-data-mcp/forecast-barrier-optimize.md - `options_barrier_price` — Financial — https://policylayer.com/tools/emerzon-mt-data-mcp/options-barrier-price.md - `trade_close` — Financial — https://policylayer.com/tools/emerzon-mt-data-mcp/trade-close.md - `trade_modify` — Financial — https://policylayer.com/tools/emerzon-mt-data-mcp/trade-modify.md - `trade_place` — Financial — https://policylayer.com/tools/emerzon-mt-data-mcp/trade-place.md - `trade_risk_analyze` — Financial — https://policylayer.com/tools/emerzon-mt-data-mcp/trade-risk-analyze.md - `trade_var_cvar_calculate` — Financial — https://policylayer.com/tools/emerzon-mt-data-mcp/trade-var-cvar-calculate.md - `causal_discover_signals` — Other — https://policylayer.com/tools/emerzon-mt-data-mcp/causal-discover-signals.md - `forecast_barrier_prob` — Other — https://policylayer.com/tools/emerzon-mt-data-mcp/forecast-barrier-prob.md - `forecast_optimize_hints` — Other — https://policylayer.com/tools/emerzon-mt-data-mcp/forecast-optimize-hints.md - `labels_triple_barrier` — Other — https://policylayer.com/tools/emerzon-mt-data-mcp/labels-triple-barrier.md - `report_generate` — Other — https://policylayer.com/tools/emerzon-mt-data-mcp/report-generate.md - `temporal_analyze` — Other — https://policylayer.com/tools/emerzon-mt-data-mcp/temporal-analyze.md - `trade_session_context` — Other — https://policylayer.com/tools/emerzon-mt-data-mcp/trade-session-context.md - `asset_performance` — Read — https://policylayer.com/tools/emerzon-mt-data-mcp/asset-performance.md - `cointegration_test` — Read — https://policylayer.com/tools/emerzon-mt-data-mcp/cointegration-test.md - …and 51 more: https://policylayer.com/tools/emerzon-mt-data-mcp.md ## For agents This record is a snapshot. Live verdicts and the full registry: - Check every server in your MCP config at once: `npx -y policylayer stack` - Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md) - Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events` --- Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=emerzon-mt-data-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/emerzon-mt-data-mcp