microsoft/vscode · error · Error

Invalid response format

Error message

Invalid response format

What it means

Error "Invalid response format" thrown in microsoft/vscode.

Source

Thrown at extensions/copilot/src/extension/byok/vscode-node/abstractLanguageModelChatProvider.ts:147

		try {
			const headers: IStringDictionary<string> = {
				'Content-Type': 'application/json',
				'Authorization': `Bearer ${apiKey}`
			};

			const modelsEndpoint = this.getModelsDiscoveryUrl(endpoint);
			const response = await this._fetcherService.fetch(modelsEndpoint, {
				method: 'GET',
				headers,
				callSite: 'byok-models-discovery',
			});
			const data = await response.json();
			const modelList: BYOKKnownModels = {};

			const models = data.data ?? data.models;
			if (!models || !Array.isArray(models)) {
				throw new Error('Invalid response format');
			}

			for (const model of models) {
				let modelCapabilities = this._knownModels?.[model.id];
				if (!modelCapabilities) {
					modelCapabilities = this.resolveModelCapabilities(model);
					if (!modelCapabilities) {
						continue;
					}
					if (!this._knownModels) {
						this._knownModels = {};
					}
					this._knownModels[model.id] = modelCapabilities;
				}
				modelList[model.id] = modelCapabilities;
			}
			return modelList;
		} catch (error) {

View on GitHub (pinned to a94b963a32)

When it happens

Trigger: Thrown at extensions/copilot/src/extension/byok/vscode-node/abstractLanguageModelChatProvider.ts:147 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of microsoft/vscode@a94b963a32 (2026-08-12). Data as JSON: /api/errors/c1a5d804fa064f9f. Report an issue: GitHub.