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Hermes Plant PortfolioGuard Score
x402
Hermes Plant PortfolioGuard Score is a paid API for AI agents from hermesplant.com, paid per call via x402, $0.15/call, status unknown (last checked 2026-09-15).
Analyzes a portfolio's holdings and weights to produce a risk score, Sharpe ratio, volatility, max drawdown, concentration (HHI), diversification score, and rule-based compliance findings.
Price / call$0.15
Success—
StatusUnknown
How this service works
Deterministic portfolio risk analysis and quality scoring. Computes riskScore, riskLevel, volatility, sharpe, maxDrawdown, concentrationHHI, diversification, effectiveHoldings plus per-rule findings with fixes and sector/position breakdown. Pure math only from caller holdings and returns. No external data.
Output
Returns a JSON object with a numeric riskScore (0–100), a riskLevel label (e.g. 'medium'), quantitative metrics (Sharpe ratio, daily volatility, max drawdown, concentration HHI, effective holdings count, diversification score), a list of rule-based findings with severity and reasoning, and a breakdown of holdings by sector and top positions by weight.
Example use cases
Example prompt
“Score the risk of my portfolio: AAPL at 25%, BND at 35%, MSFT at 20%, GOOGL at 10%, and CASH at 10% — I want the Sharpe ratio, max drawdown, concentration HHI, diversification score, and any rule violations flagged.”
Technical details
Endpoint
GEThttps://hermesplant.com/api/agent-services/portfolioguard/scoreWhen to prefer
Use this endpoint when an AI agent needs deterministic, test-backed portfolio risk quantification including Sharpe, volatility, drawdown, concentration (HHI), and compliance rule checks — all in one call. Prefer it over building custom analytics when you need a metered, pay-per-call quant service with structured findings and sector breakdowns ready for downstream reporting or agent decision-making.
Side effects
- Weights do not sum to approximately 1.0 — endpoint flags a sanity warning or returns an error
- Missing required fields such as holdings array or weights — returns 400 bad request
- Single position weight exceeds threshold — flagged as a finding rather than hard failure
- Invalid or unrecognized ticker symbols — may produce partial or degraded analytics
- Payment not completed via x402 — returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| holdings | array | List of positions with symbol, weight (0-1), optional returns[], sector, assetClass. |
| riskFreeRate | number | Optional risk-free rate for Sharpe (default 0). |
| periodReturns | array | Optional time series of portfolio or market period returns (preferred for volatility/sharpe/MDD). |
Output
Schema · Response
{
"type": "json",
"example": {
"metrics": {
"sharpe": 0.42,
"volatility": 0.0071,
"maxDrawdown": 0.014,
"concentrationHHI": 0.2375,
"effectiveHoldings": 4.21,
"diversificationScore": 76
},
"findings": [
{
"fix": null,
"why": "Weights should sum to approximately 1.0.",
"rule": "weights-sum-sanity",
"evidence": "sum=1",
"severity": "info"
},
{
"fix": null,
"why": "No position exceeds 25%.",
"rule": "single-position-concentration",
"evidence": "maxWeight=0.35",
"severity": "info"
}
],
"breakdown": {
"bySector": {
"Bonds": {
"count": 1,
"weight": 0.35
},
"Technology": {
"count": 1,
"weight": 0.25
}
},
"topPositions": [
{
"symbol": "BND",
"weight": 0.35
},
{
"symbol": "AAPL",
"weight": 0.25
}
]
},
"riskLevel": "medium",
"riskScore": 64
}
}Tags
x402
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