microsoft/vscode · error · Error

API key not found for the model

Error message

API key not found for the model

What it means

Error "API key not found for the model" thrown in microsoft/vscode.

Source

Thrown at extensions/copilot/src/extension/byok/vscode-node/anthropicProvider.ts:112

	async provideLanguageModelChatResponse(model: ExtendedLanguageModelChatInformation<LanguageModelChatConfiguration>, messages: Array<LanguageModelChatMessage | LanguageModelChatMessage2>, options: ProvideLanguageModelChatResponseOptions, progress: Progress<LanguageModelResponsePart2>, token: CancellationToken): Promise<void> {
		// Restore CapturingToken context if correlation ID was passed through modelOptions.
		// This handles the case where AsyncLocalStorage context was lost crossing VS Code IPC.
		const correlationId = (options as { modelOptions?: OTelModelOptions }).modelOptions?._capturingTokenCorrelationId;
		const capturingToken = correlationId ? retrieveCapturingTokenByCorrelation(correlationId) : undefined;
		const telemetryTurn = (options as { modelOptions?: OTelModelOptions }).modelOptions?._telemetryTurn;

		// Restore OTel trace context to link spans back to the agent trace
		const parentTraceContext = (options as { modelOptions?: OTelModelOptions }).modelOptions?._otelTraceContext ?? undefined;

		// OTel span handle — created outside doRequest, enriched inside with usage data
		let otelSpan: ReturnType<typeof this._otelService.startSpan> | undefined;

		const doRequest = async () => {
			const issuedTime = Date.now();
			const apiKey = model.configuration?.apiKey;
			if (!apiKey) {
				throw new Error('API key not found for the model');
			}

			const anthropicClient = new Anthropic({ apiKey });

			// Convert the messages from the API format into messages that we can use against anthropic
			const { system, messages: convertedMessages } = apiMessageToAnthropicMessage(messages as LanguageModelChatMessage[]);

			const requestId = generateUuid();
			const pendingLoggedChatRequest = this._requestLogger.logChatRequest(
				'AnthropicBYOK',
				{
					model: model.id,
					modelMaxPromptTokens: model.maxInputTokens,
					urlOrRequestMetadata: anthropicClient.baseURL,
				},
				{
					model: model.id,
					messages: anthropicMessagesToRawMessagesForLogging(convertedMessages, system),

View on GitHub (pinned to a94b963a32)

When it happens

Trigger: Thrown at extensions/copilot/src/extension/byok/vscode-node/anthropicProvider.ts:112 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/47d4e277f046ad28. Report an issue: GitHub.