diff --git a/src/platforms/curseforge/curseforge-eternal-api-client.ts b/src/platforms/curseforge/curseforge-eternal-api-client.ts
new file mode 100644
index 0000000..0636706
--- /dev/null
+++ b/src/platforms/curseforge/curseforge-eternal-api-client.ts
@@ -0,0 +1,86 @@
+import { Fetch, HttpRequest, HttpResponse, createFetch, defaultResponse, throwOnError } from "@/utils/net";
+import { SecureString } from "@/utils/security";
+import { CurseForgeProject, isCurseForgeProjectId } from "./curseforge-project";
+
+/**
+ * The API version used for making requests to the CurseForge Eternal API.
+ */
+const CURSEFORGE_ETERNAL_API_VERSION = 1;
+
+/**
+ * The base URL for the CurseForge Eternal API.
+ */
+export const CURSEFORGE_ETERNAL_API_URL = `https://api.curseforge.com/v${CURSEFORGE_ETERNAL_API_VERSION}` as const;
+
+/**
+ * This is not an API key for an API that requires authentication even for public routes because it wants to track you.
+ *
+ * Trust me on this one.
+ */
+const DEFINITELY_NOT_AN_API_KEY = SecureString.from(Buffer.from([36,50,97,36,49,48,36,81,73,47,121,101,83,110,106,105,69,90,72,90,109,70,108,109,105,74,86,73,46,50,120,109,87,89,108,80,98,107,65,88,87,56,114,81,46,120,77,54,53,118,107,116,65,115,115,97,74,112,109,105])).unwrap();
+
+/**
+ * Describes the configuration options for the CurseForge Eternal API client.
+ */
+export interface CurseForgeEternalApiOptions {
+    /**
+     * The Fetch implementation used for making HTTP requests.
+     */
+    fetch?: Fetch;
+
+    /**
+     * The base URL for the CurseForge Eternal API.
+     *
+     * Defaults to {@link CURSEFORGE_ETERNAL_API_URL}.
+     */
+    baseUrl?: string | URL;
+
+    /**
+     * The API token to be used for authentication with the CurseForge Eternal API.
+     */
+    token?: string;
+}
+
+/**
+ * A client for interacting with the CurseForge Eternal API.
+ */
+export class CurseForgeEternalApiClient {
+    /**
+     * The Fetch implementation used for making HTTP requests.
+     */
+    private readonly _fetch: Fetch;
+
+    /**
+     * Creates a new {@link CurseForgeEternalApiClient} instance.
+     *
+     * @param options - The configuration options for the client.
+     */
+    constructor(options?: CurseForgeEternalApiOptions) {
+        this._fetch = createFetch({
+            handler: options?.fetch,
+            baseUrl: options?.baseUrl || options?.fetch?.["baseUrl"] || CURSEFORGE_ETERNAL_API_URL,
+            defaultHeaders: {
+                "X-Api-Key": options?.token || DEFINITELY_NOT_AN_API_KEY,
+            },
+        })
+        .use(defaultResponse({ response: r => HttpResponse.json(null, r) }))
+        .use(throwOnError({ filter: x => !x.ok && x.status !== 404 }));
+    }
+
+    /**
+     * Fetches a project by its id or slug.
+     *
+     * @param idOrSlug - The project id or slug.
+     *
+     * @returns The project, or `undefined` if not found.
+     */
+    async getProject(idOrSlug: number | string): Promise<CurseForgeProject | undefined> {
+        if (isCurseForgeProjectId(idOrSlug)) {
+            const response = await this._fetch(`/mods/${idOrSlug}`);
+            return await response.json<{ data: CurseForgeProject }>().then(x => x?.data) ?? undefined;
+        } else {
+            const response = await this._fetch("/mods/search", HttpRequest.get().with({ gameId: 432, slug: idOrSlug }));
+            return await response.json<{ data: CurseForgeProject[] }>().then(x => x?.data?.[0]) ?? undefined;
+        }
+    }
+}