ml4t

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ml4t-kill-switch

Automated risk limits that halt trading when thresholds are breached. Use when deploying live strategies that need drawdown or loss-limit protection.

Revisar el código fuenteVer en GitHub
Precio sin confirmar★ 20 Estrellas de GitHubRegistro actualizado · 29 sept 2026agent-skill

Resumen

Automated risk limits that halt trading when thresholds are breached. Use when deploying live strategies that need drawdown or loss-limit protection.

Leer documentación completa

Documentación de origen, no instrucciones para este sitio. Revisa los permisos antes de ejecutar comandos.

Kill Switch

A human monitoring a dashboard will not react fast enough to a flash crash. By the time you see the loss and decide to act, the drawdown has compounded. Automated kill switches are the last line of defense - they must be hard-coded, not ML-based, and not overridable without explicit manual intervention.

The Problem

Live trading systems face risks that backtests never encounter: data feed failures, exchange outages, runaway algorithms, and flash crashes. A strategy producing 100 orders per second during a data glitch can lose more in minutes than it earned in months. Manual monitoring fails because: (1) humans are slow, (2) losses compound nonlinearly, and (3) the worst events happen when attention is lowest. Kill switches must trigger automatically, flatten positions immediately, and require human approval to resume.

The Pattern

WRONG
# "I'll watch the dashboard and close positions if things go wrong"
import time

while True:
    pnl = get_daily_pnl()
    if pnl < -10000:
        send_email("Loss alert")  # arrives 5 min later, read at 9am
    time.sleep(60)
# Meanwhile, the algo keeps trading during the 60s sleep
CORRECT
class KillSwitch:
    """Hard-coded risk limits. Automatic trigger, manual reset only."""

    # -3% daily P&L, -15% from peak, 200% gross, 15% in a single name
    THRESHOLDS = {"max_daily_loss": -0.03, "max_drawdown": -0.15,
                  "max_gross_leverage": 2.0, "max_position_pct": 0.15}

    def __init__(self, reset_code, on_breach):
        self.triggered = False
        self.trigger_reason = None
        self.reset_code = reset_code  # from your secret store, not from source
        self.on_breach = on_breach    # cancel open orders, flatten, page on-call

    def check(self, daily_pnl, drawdown, gross_lev, max_pos, position=0.0, qty=0.0):
        """Called BEFORE every order. False = block. Only reset() clears a latch."""
        # Derive risk reduction from the order. A caller-supplied `reducing`
        # flag is a claim, and one mislabelled order defeats the whole switch.
        reducing = qty * position < 0 and abs(qty) <= abs(position)  # no zero cross
        if self.triggered:
            return reducing
        checks = {
            "max_daily_loss": daily_pnl > self.THRESHOLDS["max_daily_loss"],
            "max_drawdown": drawdown > self.THRESHOLDS["max_drawdown"],
            "max_gross_leverage": gross_lev < self.THRESHOLDS["max_gross_leverage"],
            "max_position_pct": max_pos < self.THRESHOLDS["max_position_pct"],
        }
        for name, passed in checks.items():
            if not passed:
                self.triggered = True
                self.trigger_reason = f"{name}: threshold breached"
                self.on_breach(name)  # cancels, flattens - not the next order's job
                return False  # `reducing` was judged against the pre-flatten book
        return True  # safe to proceed

    def reset(self, manual_approval_code: str):
        """Require explicit human approval to resume."""
        if manual_approval_code == self.reset_code:
            self.triggered = False
            self.trigger_reason = None

Graduated Response

Not every breach requires full shutdown. Scale down gracefully with risk levels:

def risk_level(drawdown, realized_vol, target_vol=0.10):
    vol_ratio = realized_vol / target_vol
    if drawdown < -0.20 or vol_ratio > 3.0: return "halt"    # flatten all
    if drawdown < -0.15 or vol_ratio > 2.0: return "red"     # 25% size
    if drawdown < -0.10 or vol_ratio > 1.5: return "yellow"  # 50% size
    return "green"                                             # full size

Guardrails

  • Thresholds must be set BEFORE deployment, not adjusted during a drawdown
  • The breaching order never executes; a latched switch passes later reducing orders
  • Data feed failure is a trigger - no data means no trading, not "use stale prices"

Production Implementation

ml4t-live wraps any broker with pre-trade risk checks:

from ml4t.live import SafeBroker, LiveRiskConfig, AlpacaBroker

config = LiveRiskConfig(
    execution_mode="shadow",   # required: "shadow", "paper" or "live"
    max_daily_loss=5_000.0,
    max_drawdown_pct=0.15,     # positive fraction below the high-water mark
    max_position_value=50_000.0,
)
broker = SafeBroker(AlpacaBroker(api_key, secret_key), config)
# A breach latches and blocks risk-increasing orders; flatten with
# await broker.close_all_positions() from your own breach handler.

Checklist

  • All thresholds defined and documented before deployment
  • Kill switch runs pre-trade (before every order submission)
  • Automatic trigger, manual-only reset with approval code
  • Data feed failure triggers halt (not stale-price trading)
  • Monthly fire drill: simulate a breach and verify the system flattens
Metadatos del archivo
name: ml4t-kill-switch
description: "Automated risk limits that halt trading when thresholds are breached. Use when deploying live strategies that need drawdown or loss-limit protection."
when_to_use: "Use when building live trading systems or production risk management"
dependencies: [risk-metrics]
metadata:
  book_chapters: "19, 25"
  library: "ml4t-live"
paths: ["**/*portfolio*.py", "**/*position*.py", "**/*risk*.py", "**/*optim*.py", "**/*exposure*.py", "**/*kill*.py", "**/*stress*.py"]
Ver texto original
---
name: ml4t-kill-switch
description: "Automated risk limits that halt trading when thresholds are breached. Use when deploying live strategies that need drawdown or loss-limit protection."
when_to_use: "Use when building live trading systems or production risk management"
dependencies: [risk-metrics]
metadata:
  book_chapters: "19, 25"
  library: "ml4t-live"
paths: ["**/*portfolio*.py", "**/*position*.py", "**/*risk*.py", "**/*optim*.py", "**/*exposure*.py", "**/*kill*.py", "**/*stress*.py"]
---
# Kill Switch

A human monitoring a dashboard will not react fast enough to a flash crash. By the time you see the loss and decide to act, the drawdown has compounded. Automated kill switches are the last line of defense - they must be hard-coded, not ML-based, and not overridable without explicit manual intervention.

## The Problem

Live trading systems face risks that backtests never encounter: data feed failures, exchange outages, runaway algorithms, and flash crashes. A strategy producing 100 orders per second during a data glitch can lose more in minutes than it earned in months. Manual monitoring fails because: (1) humans are slow, (2) losses compound nonlinearly, and (3) the worst events happen when attention is lowest. Kill switches must trigger automatically, flatten positions immediately, and require human approval to resume.

## The Pattern

### WRONG
```python
# "I'll watch the dashboard and close positions if things go wrong"
import time

while True:
    pnl = get_daily_pnl()
    if pnl < -10000:
        send_email("Loss alert")  # arrives 5 min later, read at 9am
    time.sleep(60)
# Meanwhile, the algo keeps trading during the 60s sleep
```

### CORRECT
```python
class KillSwitch:
    """Hard-coded risk limits. Automatic trigger, manual reset only."""

    # -3% daily P&L, -15% from peak, 200% gross, 15% in a single name
    THRESHOLDS = {"max_daily_loss": -0.03, "max_drawdown": -0.15,
                  "max_gross_leverage": 2.0, "max_position_pct": 0.15}

    def __init__(self, reset_code, on_breach):
        self.triggered = False
        self.trigger_reason = None
        self.reset_code = reset_code  # from your secret store, not from source
        self.on_breach = on_breach    # cancel open orders, flatten, page on-call

    def check(self, daily_pnl, drawdown, gross_lev, max_pos, position=0.0, qty=0.0):
        """Called BEFORE every order. False = block. Only reset() clears a latch."""
        # Derive risk reduction from the order. A caller-supplied `reducing`
        # flag is a claim, and one mislabelled order defeats the whole switch.
        reducing = qty * position < 0 and abs(qty) <= abs(position)  # no zero cross
        if self.triggered:
            return reducing
        checks = {
            "max_daily_loss": daily_pnl > self.THRESHOLDS["max_daily_loss"],
            "max_drawdown": drawdown > self.THRESHOLDS["max_drawdown"],
            "max_gross_leverage": gross_lev < self.THRESHOLDS["max_gross_leverage"],
            "max_position_pct": max_pos < self.THRESHOLDS["max_position_pct"],
        }
        for name, passed in checks.items():
            if not passed:
                self.triggered = True
                self.trigger_reason = f"{name}: threshold breached"
                self.on_breach(name)  # cancels, flattens - not the next order's job
                return False  # `reducing` was judged against the pre-flatten book
        return True  # safe to proceed

    def reset(self, manual_approval_code: str):
        """Require explicit human approval to resume."""
        if manual_approval_code == self.reset_code:
            self.triggered = False
            self.trigger_reason = None
```

## Graduated Response

Not every breach requires full shutdown. Scale down gracefully with risk levels:

```python
def risk_level(drawdown, realized_vol, target_vol=0.10):
    vol_ratio = realized_vol / target_vol
    if drawdown < -0.20 or vol_ratio > 3.0: return "halt"    # flatten all
    if drawdown < -0.15 or vol_ratio > 2.0: return "red"     # 25% size
    if drawdown < -0.10 or vol_ratio > 1.5: return "yellow"  # 50% size
    return "green"                                             # full size
```

## Guardrails

- Thresholds must be set BEFORE deployment, not adjusted during a drawdown
- The breaching order never executes; a latched switch passes later reducing orders
- Data feed failure is a trigger - no data means no trading, not "use stale prices"

## Production Implementation

`ml4t-live` wraps any broker with pre-trade risk checks:

```python
from ml4t.live import SafeBroker, LiveRiskConfig, AlpacaBroker

config = LiveRiskConfig(
    execution_mode="shadow",   # required: "shadow", "paper" or "live"
    max_daily_loss=5_000.0,
    max_drawdown_pct=0.15,     # positive fraction below the high-water mark
    max_position_value=50_000.0,
)
broker = SafeBroker(AlpacaBroker(api_key, secret_key), config)
# A breach latches and blocks risk-increasing orders; flatten with
# await broker.close_all_positions() from your own breach handler.
```

## Checklist

- [ ] All thresholds defined and documented before deployment
- [ ] Kill switch runs pre-trade (before every order submission)
- [ ] Automatic trigger, manual-only reset with approval code
- [ ] Data feed failure triggers halt (not stale-price trading)
- [ ] Monthly fire drill: simulate a breach and verify the system flattens

Revisar el código fuente

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Licencia
Apache-2.0
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Revisar antes de instalar: Evitar instalación automática

Licencia: Apache-2.0

  • Financial research output is not financial advice; require human review before any live investment decision
  • Potential broker, wallet, exchange, or real-money execution surface; sandbox and explicit approval are required
  • Low GitHub adoption signal
  • Falta aprobación de revisión por IA
  • Financial research output is not financial advice; require human review before any live investment decision.
  • This skill may touch real-money trading, broker, wallet, or exchange operations; use only in a sandbox with explicit approval.
  • Quality score needs review
  • GitHub adoption: 20 GitHub stars
  • Stars/forks activity: 20 stars, 11 forks; issue activity unavailable in current metadata
  • Review status: AI review approval is missing
Abrir auditoría completa

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Empieza con una tarea pequeña

  1. 1Lee la fuente y confirma entradas, resultados, dependencias y permisos.
  2. 2Pide un plan al agente. Aprueba la configuración y los costes antes de probar en un entorno aislado.
  3. 3Comprueba resultados y archivos modificados. Informa solo de lo ejecutado y conserva la revisión de la fuente.

Consulta dependencias, claves API y costes externos en la fuente. Un repositorio público no implica servicios gratuitos.

Fuente y notas de uso

IndexadoRevisión estática

Los metadatos y revisiones son orientativos. Popularidad, descubrimiento y ejecución correcta son hechos distintos.

Repositorio fuente
ml4t/skills
Licencia
Apache-2.0
Versión
Unknown
Último push de GitHub
29 sept 2026
Registro actualizado
29 sept 2026

Versión declarada en el registro; consulta las versiones de la fuente.

Calidad

54/100

Requiere revisión

Confianza

63/100

Solo sandbox

Auditoría

74/100

Riesgoso

  • Financial research output is not financial advice; require human review before any live investment decision
  • Potential broker, wallet, exchange, or real-money execution surface; sandbox and explicit approval are required
  • Low GitHub adoption signal
  • Falta aprobación de revisión por IA
  • Financial research output is not financial advice; require human review before any live investment decision.
  • This skill may touch real-money trading, broker, wallet, or exchange operations; use only in a sandbox with explicit approval.
  • Quality score needs review
  • GitHub adoption: 20 GitHub stars
  • Stars/forks activity: 20 stars, 11 forks; issue activity unavailable in current metadata
  • Review status: AI review approval is missing
Verified installs
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Más detalles
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  "skill": {
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    "description": "Automated risk limits that halt trading when thresholds are breached. Use when deploying live strategies that need drawdown or loss-limit protection.",
    "category": "finance",
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        "id": "claude-code",
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  "trust": {
    "score": 71,
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    "version": "trust-score-v4",
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      "license": "Apache-2.0",
      "repository": "https://github.com/ml4t/skills/tree/main/portfolio/kill-switch",
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      "installSafety": "standard package or runtime install path",
      "permissionSurface": "secrets or environment access",
      "documentation": "Usable metadata, review docs",
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      "Potential broker, wallet, exchange, or real-money execution surface; sandbox and explicit approval are required",
      "Low GitHub adoption signal",
      "AI review approval is missing",
      "Financial research output is not financial advice; require human review before any live investment decision.",
      "This skill may touch real-money trading, broker, wallet, or exchange operations; use only in a sandbox with explicit approval.",
      "Quality score needs review",
      "GitHub adoption: 20 GitHub stars"
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    "Audit risk risky exceeds max_risk=medium",
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  "agent_contract": {
    "task_input": "Use ml4t-kill-switch in an agent workflow",
    "recommended_action": "Do not auto-install. Inspect the source, dependencies, and permission surface first.",
    "install_policy": "block",
    "minimum_review_before_use": [
      "Trust: 71/100 Manual review",
      "Audit: 74/100 Risky",
      "Safety: 50/100 Avoid automatic install",
      "Review repository, license, install command, and permission surface before production use."
    ],
    "expected_agent_output": {
      "selected_skill": "ml4t-ml4t-kill-switch (ml4t-kill-switch)",
      "install_command": "npx skills add ml4t/skills --skill ml4t-kill-switch",
      "risk_summary": "Risky; Blocked for auto-install; Review before production",
      "verification_result": "Report the smallest successful task, files touched, warnings, and any missing setup."
    }
  },
  "outcome_feedback": {
    "endpoint": "https://www.openagentskill.com/api/agent/outcome",
    "method": "POST",
    "requires_resolve_event_id": true,
    "event_id_source": "Use install_receipt.outcome_feedback.event_id or feedback.event_id returned by /api/agent/resolve for the current task.",
    "expected_outcomes": [
      "success",
      "failed",
      "not_relevant",
      "blocked_by_risk",
      "setup_required"
    ],
    "payload_template": {
      "event_id": "<install_receipt.outcome_feedback.event_id or feedback.event_id from /api/agent/resolve>",
      "skill_slug": "ml4t-ml4t-kill-switch",
      "task": "Use ml4t-kill-switch in an agent workflow",
      "agent": "codex",
      "outcome": "success",
      "install_used": true,
      "risk_blocked": false,
      "setup_required": false,
      "task_success": true,
      "output_quality": 4,
      "error_type": null,
      "human_review_required": false,
      "workspace": "sandbox",
      "time_to_useful_ms": 120000,
      "notes": "Report the smallest successful task, setup friction, files touched, and risk notes."
    }
  },
  "endpoints": {
    "web": "https://www.openagentskill.com/skills/ml4t-ml4t-kill-switch",
    "api": "https://www.openagentskill.com/api/agent/skills/ml4t-ml4t-kill-switch",
    "audit": "https://www.openagentskill.com/skills/ml4t-ml4t-kill-switch/audit",
    "eval": "https://www.openagentskill.com/api/agent/evals?slug=ml4t-ml4t-kill-switch&task=Use%20ml4t-kill-switch%20in%20an%20agent%20workflow&max_risk=medium",
    "resolve": "https://www.openagentskill.com/api/agent/resolve?task=Use%20ml4t-kill-switch%20in%20an%20agent%20workflow&agent=codex&max_risk=medium",
    "receipt": "https://www.openagentskill.com/api/agent/receipt?task=Use%20ml4t-kill-switch%20in%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text",
    "install": "https://www.openagentskill.com/api/skills/ml4t-ml4t-kill-switch/install",
    "manifest": "https://www.openagentskill.com/api/registry/manifest/ml4t-ml4t-kill-switch"
  }
}

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Creador
ml4t
Indexado por
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