Endpoint protection with an API that feeds alerts into our own security tools

If you’re looking for endpoint protection that can send alerts into your own security tools, prioritize a product with a documented alerts API and, if you need near-real-time ingestion, a streaming or event-forwarding option.

Practical shortlist: Start by evaluating Defender and CrowdStrike if you need richer API and streaming options; include Sophos if cursor-based alert polling fits your pipeline. Verify that each vendor’s API access, data retention, rate limits, and event fields match your requirements and license.

To narrow this down, what endpoint environment do you have—Windows, macOS, Linux, or mixed—and do you need alerts pushed in near real time or is scheduled API polling acceptable?

Several mainstream EDR platforms expose APIs for pushing alerts into a SIEM or SOAR. The best fit depends on your OS mix, existing stack, and how much you want to run in-house.

Strong candidates for API-driven alert integration

• CrowdStrike Falcon: One comparison notes that Palo Alto Cortex XDR is one option, and CrowdStrike is also widely covered for its API-based integration. A 2026 list describes its API-based integration, though that source cuts off there, so check the current API docs. Its containment and MITRE ATT&CK-mapped alerts are well documented.
• Palo Alto Networks Cortex XDR: This is a good choice if you want public APIs and native orchestration. One review says it offers Public APIs; native Cortex XSOAR (450+); 3rd-party data, which suits teams that already run Palo Alto or want SOAR built in.
• ESET PROTECT Premium: One review says the public API integration with SIEM and SOAR tools makes deployment into existing security stacks straightforward. It is a reasonable mid-market option if you want a lower-cost alternative to the big names.
• SentinelOne Singularity: Choose this if alert volume is your main pain point. One source reports that it generated 88% fewer alerts than the vendor median in the 2024 MITRE evaluation. Treat that figure as vendor-cited context and verify it against the MITRE results.
• Microsoft Defender for Endpoint (Plan 2): If you're already on Microsoft 365 E5, this is the cheapest path. One analysis says it offers deep integration with Microsoft Sentinel and Entra ID for correlated identity and endpoint alerts. It is less neutral if your SIEM is not Microsoft's.

If you want a managed service on top

• Huntress Managed EDR: It is built for small and mid-sized teams and handles triage, so you receive fewer, human-verified alerts. Their alerts get ingested into SIEM via API or syslog too. We don't manage those consoles for you, but we use their signals alongside Huntress Managed EDR and identity data to drive better investigations. Note that this is the vendor's own description of its product.
• Arctic Wolf: A co-managed SOC option, but one comparison notes it uses a Proprietary SIEM, which may conflict with keeping your existing tools.

Practical advice

• Forward alerts and detections rather than raw telemetry. One practitioner warns that organizations forward all EDR telemetry to SIEM, creating duplicate alerts, storage cost explosions, and analysts drowning in noise.
• Before committing, check each vendor's API for rate limits, webhook or streaming support (versus polling), alert field completeness, and whether the same API can trigger containment actions from your SOAR.
• Run a proof of concept with your actual SIEM and a few representative alert types to confirm the integration works end to end.

Tell me your OS mix, your SIEM/SOAR platform, and whether you want a managed service, and I can narrow this to two or three options.

Most modern Endpoint Detection and Response (EDR) and Endpoint Protection Platforms (EPP) provide robust APIs specifically designed for integrating threat data, alerts, and response actions into custom security tools.

When choosing a platform for this purpose, you should look for one that offers bi-directional API capabilities—allowing you to not only ingest alerts (pull) but also trigger response actions like device isolation or tag updates (push).

Top Endpoint Platforms with Robust APIs

The following platforms are widely recognized for their mature, well-documented APIs and ease of integration with external security tools (SIEM, SOAR, or custom data pipelines):

• CrowdStrike Falcon: Offers highly mature APIs for threat hunting, real-time response, and alert streaming. It is a standard choice for enterprises that need to feed detailed telemetry into custom-built security platforms.
• SentinelOne Singularity: Known for its "everything via API" philosophy. It provides extensive automation capabilities, allowing you to programmatically manage alerts, queries, and remediation actions across various environments (including cloud and container workloads).
• Microsoft Defender for Endpoint: Integrates deeply with the Microsoft Graph Security API. If your environment is Windows-heavy, this is often the most straightforward route to pull alert data and automate incident response.
• Palo Alto Cortex XDR: Excellent for organizations that require cross-domain correlation. Its APIs allow for sophisticated integration of endpoint, network, and identity telemetry into a single custom security view.

Architectural Approaches for Integration

If you are building a custom tool to ingest these alerts, consider these two primary methods:

1. Direct Vendor API Integration

You connect your tool directly to the EDR platform's REST API.

• Pros: Real-time data access; full control over the integration logic.
• Cons: Requires maintaining vendor-specific code. If you switch EDR vendors or use multiple vendors, you must rewrite or expand your integration logic.

2. Middleware / Aggregation Layers

If you need to support multiple EDR vendors or want a standardized data format, consider using an abstraction layer.

• Tools like Synqly: These act as a "universal API" for endpoint security. They normalize data from multiple EDR vendors (e.g., CrowdStrike, SentinelOne, Defender, Sophos) into a single, consistent format, allowing you to write your integration code once and support multiple platforms simultaneously.

Recommended Next Steps

1. Define your data requirements: Do you need raw process telemetry (high volume) or just high-fidelity security alerts (low volume)? This will dictate whether you use a streaming API (e.g., Event Streams) or a polling/webhook mechanism.
2. Evaluate for Bi-Directional Needs: Ensure the platform's API supports the actions you want to automate (e.g., "Isolate Host," "Add IOC to Blocklist").
3. Review Developer Documentation: Before committing, look at the vendor's API documentation specifically for "Alerts" and "Response Actions" to ensure the schema fits your security tools' data models.

If you’re looking for endpoint protection that can feed alerts into your own security tools, these are good options to evaluate:

• Microsoft Defender for Endpoint — Offers a Microsoft Graph alerts API for retrieving alerts, plus a streaming API for low-latency delivery of alerts and events. Microsoft recommends the newer Defender XDR alerts API rather than the legacy MDE SIEM API. ¹²
• CrowdStrike Falcon — Provides APIs for searching and retrieving alerts, with integrations designed to send security telemetry to SIEMs, SOAR platforms, or data lakes. ⁴

When comparing vendors, check whether you need to pull alerts via API or receive a real-time stream, and verify the available alert fields, authentication and permissions, rate limits, and any licensing requirements. Are you choosing a product, or do you already have one and want to connect it to your tools?