Add the WebMCPify agent skill 🤖🤖🤖 (#2400)

* feat(skills): add webmcpify skill * style(skills): quote webmcpify description
2026-08-13 20:59:12 +00:00 · 2026-07-23 19:50:25 +02:00
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+/**
+ * Ambient types for the WebMCP API — vendored from https://github.com/TueJon/webmcpify
+ *
+ * MIT License
+ * Copyright (c) 2026 Jonas Tüchler
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software — keep this header when
+ * copying this file into your project.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Full text: https://github.com/TueJon/webmcpify/blob/main/LICENSE
+ *
+ * registerTool/ontoolchange/annotations/getTools follow the CG draft
+ * (https://webmachinelearning.github.io/webmcp/); executeTool is a Chrome-only
+ * extension not yet in the draft. This API is in flux — re-check against the
+ * draft and https://developer.chrome.com/docs/ai/webmcp when updating.
+ *
+ * This is a GLOBAL script file — no imports (an import would turn it into a
+ * module and un-globalize every interface). React JSX typings for the declarative
+ * attributes live in the separate webmcp-jsx.d.ts template.
+ */
+
+interface ModelContextToolAnnotations {
+  readOnlyHint?: boolean;
+  untrustedContentHint?: boolean;
+}
+
+interface ModelContext extends EventTarget {
+  registerTool(
+    tool: ModelContextTool,
+    options?: { signal?: AbortSignal; exposedTo?: string[] },
+  ): Promise<void>;
+  ontoolchange: ((this: ModelContext, ev: Event) => unknown) | null;
+  /**
+   * Enumerates tools exposed to this document. Added to the CG draft in 2026-07;
+   * intended for in-page agents and test harnesses, not application logic.
+   */
+  getTools(options?: { fromOrigins?: string[] }): Promise<RegisteredTool[]>;
+  /**
+   * Chrome-only execution surface (2026-07+; not yet in the CG draft); replaced
+   * the removed navigator.modelContextTesting API.
+   */
+  executeTool?(
+    tool: RegisteredTool,
+    inputJson: string,
+    options?: { signal?: AbortSignal },
+  ): Promise<string | null>;
+}
+
+interface ModelContextTool {
+  /** [a-zA-Z0-9_.-]; spec allows up to 128 chars, Google recommends ≤30 */
+  name: string;
+  /** Optional display label */
+  title?: string;
+  /** Natural-language capability statement, ≤500 chars recommended */
+  description: string;
+  /** JSON Schema for the tool's input */
+  inputSchema?: object;
+  /**
+   * Only `input` is passed — there is no client/session argument in the IDL.
+   * IDL: `Promise<any>` — WebIDL auto-wraps synchronous returns (and throws) in
+   * a promise, so a sync implementation still fulfills this type at runtime;
+   * declare it async for type fidelity.
+   */
+  execute(input: Record<string, unknown>): Promise<unknown>;
+  annotations?: ModelContextToolAnnotations;
+}
+
+/** Shape returned by getTools(). NOTE inputSchema is a STRINGIFIED JSON Schema. */
+interface RegisteredTool {
+  name: string;
+  title?: string;
+  description: string;
+  inputSchema?: string;
+  annotations?: ModelContextToolAnnotations;
+  /** Registering origin (secure origins only). */
+  origin: string;
+  /** Owning window (cross-document enumeration). */
+  window: Window;
+}
+
+interface Document {
+  readonly modelContext?: ModelContext;
+}
+
+interface Navigator {
+  /** Deprecated Chrome 149 origin-trial surface; prefer document.modelContext. */
+  readonly modelContext?: ModelContext;
+}
+
+/** Declarative form submissions: agent-invoked flag + result bridge. */
+interface SubmitEvent {
+  readonly agentInvoked?: boolean;
+  respondWith?(result: Promise<unknown>): void;
+}