Health Check

curl --request GET \
  --url https://api.stratus.run/health

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.stratus.run/health",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.stratus.run/health"

	req, _ := http.NewRequest("GET", url, nil)

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

require 'uri'
require 'net/http'

url = URI("https://api.stratus.run/health")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)

response = http.request(request)
puts response.read_body

{
  "status": "<string>",
  "stratus_models_loaded": [
    "<string>"
  ],
  "llm_providers": [
    "<string>"
  ],
  "vault": "<string>",
  "brain": {
    "brain.loaded": true,
    "brain.device": "<string>",
    "brain.num_actions": 123,
    "brain.sentence_transformers": true,
    "brain.tool_matching": "<string>"
  },
  "version": "<string>",
  "git_sha": "<string>"
}

GET

health

Health Check

curl --request GET \
  --url https://api.stratus.run/health

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.stratus.run/health",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.stratus.run/health"

	req, _ := http.NewRequest("GET", url, nil)

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

require 'uri'
require 'net/http'

url = URI("https://api.stratus.run/health")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)

response = http.request(request)
puts response.read_body

{
  "status": "<string>",
  "stratus_models_loaded": [
    "<string>"
  ],
  "llm_providers": [
    "<string>"
  ],
  "vault": "<string>",
  "brain": {
    "brain.loaded": true,
    "brain.device": "<string>",
    "brain.num_actions": 123,
    "brain.sentence_transformers": true,
    "brain.tool_matching": "<string>"
  },
  "version": "<string>",
  "git_sha": "<string>"
}

Overview

The /health endpoint provides real-time status information about the Stratus API, loaded models, LLM provider availability, and vault connectivity.

No authentication required - This endpoint is publicly accessible for monitoring and debugging.

Use Cases

Monitoring

Monitor API availability and model status

Service Discovery

Discover available models and providers

Debugging

Troubleshoot connection and availability issues

Health Checks

Integrate with load balancers and monitoring tools

Request

No parameters required. Simple GET request:

GET https://api.stratus.run/health

Response

{
  "status": "healthy",
  "stratus_models_loaded": ["base"],
  "llm_providers": ["openai", "anthropic", "google", "openrouter"],
  "vault": "connected",
  "brain": {
    "loaded": true,
    "checkpoint": "/home/formation/stratus_checkpoints/policy_probe/policy_probe_v4_best.pt",
    "device": "cuda",
    "num_actions": 903,
    "random_baseline_nats": 6.8057,
    "sentence_transformers": true,
    "tool_matching": "sentence-transformers"
  },
  "version": "1.0.0",
  "git_sha": "2abf045f"
}

Response Fields

string

Overall API health status. Returns "healthy" when the service is running.

string[]

Array of loaded Stratus world model sizes (e.g., ["base"]).

string[]

Array of registered LLM provider names. Current providers: openai, anthropic, google, openrouter.

string

Supabase Vault connection status for encrypted LLM key storage: "connected" or "disabled".

object

Policy head and world model status.

Show brain fields

boolean

Whether the policy head checkpoint is loaded and ready.

string

Compute device ("cuda" or "cpu").

integer

Size of the action vocabulary (currently 903).

boolean

Whether sentence-transformers is loaded for semantic tool matching.

string

Tool matching strategy: "sentence-transformers" (semantic) or "keyword" (fallback).

string

API version string.

string

Git commit SHA of the deployed build.

Status Interpretation

Overall Status

Status	Meaning	Action
`healthy`	All systems operational	No action needed

Vault Status

Status	Meaning
`connected`	LLM key management available
`disabled`	Vault not configured — `/v1/account/llm-keys` endpoints unavailable

Examples

Check API Health

curl https://api.stratus.run/health

const response = await fetch('https://api.stratus.run/health');
const health = await response.json();

if (health.status === 'healthy') {
  console.log('API is healthy');
  console.log('Loaded models:', health.stratus_models_loaded);
  console.log('Providers:', health.llm_providers);
} else {
  console.warn('API status:', health.status);
}

import requests

response = requests.get("https://api.stratus.run/health")
health = response.json()

if health['status'] == 'healthy':
    print('API is healthy')
    print(f"Loaded models: {health['stratus_models_loaded']}")
    print(f"Providers: {health['llm_providers']}")
else:
    print(f"API status: {health['status']}")

Check Provider Registration

async function isProviderRegistered(provider: 'openai' | 'anthropic') {
  const response = await fetch('https://api.stratus.run/health');
  const health = await response.json();

  return (health.llm_providers as string[]).includes(provider);
}

// Use before making requests
const openaiAvailable = await isProviderRegistered('openai');
if (openaiAvailable) {
  // Proceed with OpenAI-based request
}

Integration with Load Balancer

# Health check endpoint for Kubernetes/Docker
from flask import Flask, jsonify
import requests

app = Flask(__name__)

@app.route('/health')
def health_check():
    try:
        stratus_health = requests.get(
            "https://api.stratus.run/health",
            timeout=5
        ).json()

        if stratus_health['status'] == 'healthy':
            return jsonify({"status": "ok"}), 200
        else:
            return jsonify({"status": "degraded"}), 503
    except Exception as e:
        return jsonify({"status": "error", "message": str(e)}), 503

Monitoring Dashboard

async function getHealthDashboard() {
  const response = await fetch('https://api.stratus.run/health');
  const health = await response.json();

  return {
    apiStatus: health.status,
    modelsLoaded: health.stratus_models_loaded as string[],
    providers: health.llm_providers as string[],
    vaultConnected: health.vault === 'connected',
    version: health.version
  };
}

// Display in UI
const dashboard = await getHealthDashboard();
console.log('Models loaded:', dashboard.modelsLoaded);
console.log('Providers:', dashboard.providers);

Performance

Metric	Value
Latency	<100ms (typically ~50ms)
Availability	99.9% uptime
Rate Limit	No rate limit (public endpoint)
Caching	No caching recommended (live status)

Use in Production

Health Check Polling

// Poll every 30 seconds
setInterval(async () => {
  try {
    const response = await fetch('https://api.stratus.run/health', {
      signal: AbortSignal.timeout(5000)
    });

    const health = await response.json();

    // Update internal status
    updateServiceStatus(health);

    // Alert if degraded
    if (health.status !== 'healthy') {
      alertOps('Stratus API degraded', health);
    }
  } catch (error) {
    alertOps('Stratus API unreachable', error);
  }
}, 30000);

Circuit Breaker Pattern

import time
from enum import Enum

class CircuitState(Enum):
    CLOSED = "closed"
    OPEN = "open"
    HALF_OPEN = "half_open"

class StratusCircuitBreaker:
    def __init__(self, failure_threshold=3, timeout=60):
        self.state = CircuitState.CLOSED
        self.failures = 0
        self.failure_threshold = failure_threshold
        self.timeout = timeout
        self.last_failure_time = None

    def check_health(self):
        try:
            response = requests.get(
                "https://api.stratus.run/health",
                timeout=5
            )
            health = response.json()

            if health['status'] == 'healthy':
                self.on_success()
                return True
            else:
                self.on_failure()
                return False
        except:
            self.on_failure()
            return False

    def on_success(self):
        self.failures = 0
        self.state = CircuitState.CLOSED

    def on_failure(self):
        self.failures += 1
        self.last_failure_time = time.time()

        if self.failures >= self.failure_threshold:
            self.state = CircuitState.OPEN

    def can_request(self):
        if self.state == CircuitState.CLOSED:
            return True

        if self.state == CircuitState.OPEN:
            if time.time() - self.last_failure_time > self.timeout:
                self.state = CircuitState.HALF_OPEN
                return True
            return False

        # HALF_OPEN - try one request
        return True

# Usage
breaker = StratusCircuitBreaker()

if breaker.can_request() and breaker.check_health():
    # Make API request
    pass
else:
    # Use fallback
    pass

Troubleshooting

Endpoint Not Responding

Symptoms: Timeout or connection refused Possible Causes:

Network connectivity issues
DNS resolution problems
Firewall blocking HTTPS traffic

Solution:

# Test connectivity
curl -v https://api.stratus.run/health

# Check DNS
nslookup api.stratus.run

# Check with different DNS
curl --dns-servers 8.8.8.8 https://api.stratus.run/health

No Models Loaded

Symptoms: stratus_models_loaded is empty [] Meaning: No Stratus world model is loaded — all chat/messages/rollout/embeddings requests will fail Action:

Check stratus_models_loaded array
Contact support if models are not loading
Monitor for recovery

Vault Disabled

Symptoms: vault: "disabled" Impact: Cannot use /v1/account/llm-keys endpoints for encrypted key storage Workaround: Pass LLM provider keys directly in requests (less secure but functional)

Integration Examples

With Prometheus

from prometheus_client import Gauge
import requests

stratus_health = Gauge('stratus_health', 'Stratus API health status', ['component'])

def collect_health_metrics():
    response = requests.get("https://api.stratus.run/health")
    health = response.json()

    # Overall status (1 = healthy, 0 = unhealthy)
    status_value = 1.0 if health['status'] == 'healthy' else 0.0
    stratus_health.labels(component='api').set(status_value)

    # Provider availability
    for provider in health['llm_providers']:
        stratus_health.labels(component=f'provider_{provider}').set(1.0)

    # Models loaded
    for model in health['stratus_models_loaded']:
        stratus_health.labels(component=f'model_{model}').set(1.0)

With Datadog

import { StatsD } from 'node-dogstatsd';

const statsd = new StatsD();

async function reportHealthToDatadog() {
  const response = await fetch('https://api.stratus.run/health');
  const health = await response.json();

  // Send metrics
  statsd.gauge('stratus.health.status',
    health.status === 'healthy' ? 1 : 0
  );

  // Provider availability
  (health.llm_providers as string[]).forEach((provider) => {
    statsd.gauge(`stratus.provider.${provider}.available`, 1);
  });

  // Model availability
  (health.stratus_models_loaded as string[]).forEach((model) => {
    statsd.gauge(`stratus.model.${model}.loaded`, 1);
  });
}

Models - List available model combinations
LLM Keys - Manage encrypted LLM keys (requires vault connection)

Best Practices

Poll health endpoint every 30-60 seconds for production monitoring
Implement circuit breaker pattern to handle degraded states gracefully
Monitor vault connection if using LLM key management features
Set appropriate timeouts (5s recommended) to avoid blocking on health checks

​Overview

​Use Cases

Monitoring

Service Discovery

Debugging

Health Checks

​Request

​Response

​Response Fields

​Status Interpretation

​Overall Status

​Vault Status

​Examples

​Check API Health

​Check Provider Registration

​Integration with Load Balancer

​Monitoring Dashboard

​Performance

​Use in Production

​Health Check Polling

​Circuit Breaker Pattern

​Troubleshooting

​Endpoint Not Responding

​No Models Loaded

​Vault Disabled

​Integration Examples

​With Prometheus

​With Datadog

​Related Endpoints

Best Practices

Overview

Use Cases

Request

Response

Response Fields

Status Interpretation

Overall Status

Vault Status

Examples

Check API Health

Check Provider Registration

Integration with Load Balancer

Monitoring Dashboard

Performance

Use in Production

Health Check Polling

Circuit Breaker Pattern

Troubleshooting

Endpoint Not Responding

No Models Loaded

Vault Disabled

Integration Examples

With Prometheus

With Datadog

Related Endpoints