# OT/ICS Patch Feasibility Assessment API

> OT/ICS Patch Feasibility Assessment API is a paid API for AI agents from ot-intel-api.onrender.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Returns OT-safe patch feasibility analysis for a given CVE ID, including patch availability, vendor advisories, workarounds, downtime estimates, CISA KEV status, and a risk-vs-disruption score tailored for ICS/SCADA environments.

## Facts

- Endpoint: GET https://ot-intel-api.onrender.com/ot/patch
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ot-intel-api-onrender-com-06cd9925
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_J2V-z_aqzSlQv4tba83sx

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability ot-intel-api-onrender-com-06cd9925
```

Example prompt: Can you assess the patch feasibility for CVE-2021-22941 in an OT/ICS environment — I need to know if it's safe to patch live, how long the downtime would be, whether it's in the CISA KEV list, and what the risk-vs-disruption score is?

## When to prefer this

Use this endpoint when you need OT/ICS-specific patch guidance for a CVE — not just generic CVSS scores. It is uniquely suited for operational technology environments where patching a live system may cause physical disruption, and where standard IT patch guidance is insufficient. Prefer this over generic CVE lookup APIs when you need downtime estimates, safe-to-patch-live assessments, maintenance window recommendations, and ICS-layer-specific complexity ratings.

## Known failure modes

- Missing or malformed CVE ID returns an error or empty result
- CVE not found in NVD returns limited or null patch availability data
- Render.com cold start may add latency on first request
- DeepSeek enrichment failure may result in partial or degraded response
- Very recent CVEs may lack NVD references or vendor advisory data

## How this service works

OT/ICS patch feasibility for a CVE. Pass ?id=CVE-XXXX-XXXX. Returns patch availability, OT-safe workarounds, patch complexity per ICS layer, estimated downtime, safe-to-patch-live flag, deployment strategy, and risk-vs-disruption score 1-10.

## Output

Returns a structured JSON object containing: patch availability status (from NVD references), vendor advisory URLs, OT-safe workarounds if patching is disruptive, patch complexity for the affected ICS layer, estimated downtime in minutes, a boolean indicating whether it is safe to patch on a live system, recommended maintenance window, deployment strategy, CISA KEV status, and a 1–10 risk-vs-disruption score with rationale. All enriched via DeepSeek AI.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "cve_id": "CVE-2021-22941"
  }
 }
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "id"
     ],
     "properties": {
      "id": {
       "type": "string",
       "description": "CVE identifier e.g. CVE-2021-34527"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "cve_id": "CVE-2021-34527",
  "severity": "HIGH",
  "freshness": "2025-05-22T10:00:00.000Z",
  "cvss_score": 8.8,
  "workarounds": [
   "Disable the Print Spooler service on OT systems where printing is not required",
   "Block inbound SMB (port 445) at the IT/OT DMZ firewall"
  ],
  "data_sources": [
   "NVD",
   "CISA-KEV",
   "DeepSeek-CTI-Analysis"
  ],
  "ot_feasibility": {
   "requires_reboot": true,
   "patch_complexity": "Medium",
   "recommended_window": "Scheduled maintenance window",
   "safe_to_patch_live": false,
   "deployment_strategy": "Apply during planned outage. Test on non-production SCADA node first.",
   "estimated_downtime_minutes": 30
  },
  "patch_available": true,
  "vendor_advisories": [
   {
    "tags": [
     "Patch",
     "Vendor Advisory"
    ],
    "advisory_url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34527"
   }
  ],
  "actively_exploited": true,
  "risk_vs_disruption": {
   "score": 9,
   "rationale": "In CISA KEV — actively exploited. Patch urgently despite downtime required."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ot-intel-api-onrender-com-06cd9925/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ot-intel-api.onrender.com](https://www.zero.xyz/host/ot-intel-api.onrender.com/llms.txt)