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GET /v1/extension

Extension metadata

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10 free calls per day — no sign-up, no API key. Goes through the oanor gateway.

Custom headers (optional)
api.oanor.com/openvsx-api

It works. Grab an API key and use it in your project.

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Code snippets

curl "https://api.oanor.com/openvsx-api/v1/extension" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/openvsx-api/v1/extension", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/openvsx-api/v1/extension");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);
import requests
requests.get(
    "https://api.oanor.com/openvsx-api/v1/extension",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "extension": {
            "id": "redhat.java",
            "icon": "https://open-vsx.org/api/redhat/java/1.55.2026053008/file/icon128.png",
            "name": "java",
            "tags": [
                "gradle-kotlin-dsl",
                "GradleKotlinDSL",
                "java",
                "java-properties",
                "JavaProperties",
                "json",
                "keybindings",
                "linters",
                "multi-root ready"
            ],
            "install": "code --install-extension redhat.java",
            "license": "EPL-2.0",
            "preview": false,
            "version": "1.55.2026053008",
            "homepage": "https://github.com/redhat-developer/vscode-java#readme",
            "verified": "restricted",
            "namespace": "redhat",
            "timestamp": "2026-05-30T08:59:31.125486Z",
            "categories": [
                "Programming Languages",
                "Linters",
                "Formatters",
                "Snippets"
            ],
            "repository": "https://github.com/redhat-developer/vscode-java.git",
            "description": "Java Linting, Intellisense, formatting, refactoring, Maven/Gradle support and more...",
            "display_name": "Language Support for Java(TM) by Red Hat",
            "open_vsx_url": "https://open-vsx.org/extension/redhat/java",
            "published_by": "rhdevelopers-ci",
            "review_count": 16,
            "average_rating": 5,
            "download_count": 32776614
        }
    },
    "meta": {
        "timestamp": "2026-05-31T14:32:04.838Z",
        "request_id": "4fb7535c-7362-4f96-905d-6e6136672744"
    },
    "status": "ok",
    "message": "Extension retrieved",
    "success": true
}