# portfolio_risk_decompose

Decompose current-position tail risk and explicit portfolio stresses.

Agent View of the PolicyLayer registry record for `portfolio_risk_decompose`. HTML page: https://policylayer.com/tools/emerzon-mt-data-mcp/portfolio-risk-decompose

## Facts

- Tool: `portfolio_risk_decompose`
- 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": "portfolio_risk_decompose",
    "arguments": {}
  }
}
```

## Why portfolio_risk_decompose is rated Low

This tool analyzes and breaks down risk metrics for a portfolio—a purely analytical/read operation. It retrieves or computes descriptive statistics about existing positions (tail risk, stress scenarios) without creating trades, modifying positions, executing market orders, or deleting data.

From the tool's own definition: "Tool performs decomposition and analysis of tail risk and portfolio stresses on current positions. The verbs 'decompose' and the focus on analysis/description indicate retrieval and analysis of existing portfolio data without modification, execution of…"

## Use case

AI agents call portfolio_risk_decompose 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": {
    "portfolio_risk_decompose": {}
  }
}
```

## 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`

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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