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The DevHelm API enforces rate limits per organization using a sliding-window algorithm. Limits vary by plan and are shared across all API keys in the same organization.

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Limits by plan

PlanRequests per minute
Free100
Starter1,000
Pro5,000
Team5,000
Business100,000
Enterprise100,000

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Response headers

Every authenticated API response includes rate limit headers:
HeaderDescription
X-RateLimit-LimitMaximum requests allowed in the window
X-RateLimit-RemainingRequests remaining in the current window
X-RateLimit-ResetUnix timestamp (seconds) when the window resets
HTTP/1.1 200 OK
X-RateLimit-Limit: 5000
X-RateLimit-Remaining: 4987
X-RateLimit-Reset: 1712956860

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When rate limited

When you exceed the limit, the API returns 429 Too Many Requests with a Retry-After header: 
HTTP/1.1 429 Too Many Requests
Retry-After: 12
X-RateLimit-Limit: 100
X-RateLimit-Remaining: 0
X-RateLimit-Reset: 1712956860

{
  "status": 429,
  "message": "Rate limit exceeded. Retry after 12.",
  "timestamp": 1712956848000
}

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Retry strategy

async function fetchWithRetry(url: string, options: RequestInit, maxRetries = 3) {
  for (let attempt = 0; attempt < maxRetries; attempt++) {
    const response = await fetch(url, options);

    if (response.status === 429) {
      const retryAfter = parseInt(response.headers.get("Retry-After") || "5");
      await new Promise((r) => setTimeout(r, retryAfter * 1000));
      continue;
    }

    return response;
  }
  throw new Error("Max retries exceeded");
}

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Best practices

Check the X-RateLimit-Remaining header in responses and throttle proactively when it gets low, rather than waiting for 429 errors.
Instead of polling for status changes, use platform webhooks to receive real-time event notifications.
For data that doesn’t change frequently (service catalog, monitor configurations), cache responses locally and refresh periodically.
Instead of creating monitors one at a time via API calls, define them in devhelm.yml and deploy in a single operation.

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Unauthenticated rate limits

Public endpoints (service catalog, status data) have a separate IP-based rate limit of 60 requests per minute per IP address. This limit is independent of the organization-level limit.

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Check your current limits

curl https://api.devhelm.io/api/v1/auth/me \
  -H "Authorization: Bearer $DEVHELM_API_TOKEN"
The response includes rate limit info for your API key: 
{
  "rateLimits": {
    "requestsPerMinute": 5000,
    "remaining": 4950,
    "windowMs": 60000
  }
}