eyaltoledano/claude-task-master · error · NoSuchModelError

NoSuchModelError (languageModel, modelId: ${modelId})

Error message

NoSuchModelError (languageModel, modelId: ${modelId})

What it means

The Grok CLI language model constructor validates the modelId and throws the AI SDK's NoSuchModelError (modelType 'languageModel') when the id is falsy, not a string, or blank. This surfaces as NoSuchModelError: no such languageModel: <modelId> from the AI SDK pipeline.

Source

Thrown at packages/ai-sdk-provider-grok-cli/src/grok-cli-language-model.ts:58

	readonly defaultObjectGenerationMode = 'json' as const;
	readonly supportsImageUrls = false;
	readonly supportsStructuredOutputs = false;
	readonly supportedUrls: Record<string, RegExp[]> = {};

	readonly modelId: GrokCliModelId;
	readonly settings: GrokCliSettings;

	constructor(options: GrokCliLanguageModelOptions) {
		this.modelId = options.id;
		this.settings = options.settings ?? {};

		// Validate model ID format
		if (
			!this.modelId ||
			typeof this.modelId !== 'string' ||
			this.modelId.trim() === ''
		) {
			throw new NoSuchModelError({
				modelId: this.modelId,
				modelType: 'languageModel'
			});
		}
	}

	get provider(): string {
		return 'grok-cli';
	}

	/**
	 * Check if Grok CLI is installed and available
	 */
	private async checkGrokCliInstallation(): Promise<boolean> {
		return new Promise((resolve) => {
			const child = spawn('grok', ['--version'], {
				stdio: 'pipe'
			});

View on GitHub (pinned to c0c98d367c)

Solutions

1. Pass a valid non-empty model id, e.g. grokCli('grok-latest') or a GrokCliModelId value.
2. Check the config/env supplying the model id (e.g. GROK_MODEL) is set and non-blank.
3. Add a startup check that fails fast with a clear message if the model id is missing.
4. Trim user-supplied ids before passing them in.

Example fix

// before
const model = grokCli(process.env.GROK_MODEL); // undefined -> NoSuchModelError
// after
const model = grokCli(process.env.GROK_MODEL ?? 'grok-latest');

const id = process.env.GROK_MODEL; if (typeof id !== 'string' || id.trim() === '') throw new Error('GROK_MODEL must be a non-empty string');

function isValidModelId(v) { return typeof v === 'string' && v.trim().length > 0; }

try { const model = grokCli(modelId); } catch (e) { if (e.name === 'NoSuchModelError') { throw new ConfigError(`Invalid grok model id: ${JSON.stringify(modelId)}`); } throw e; }

When it happens

Trigger: Calling `grokCli('')`, `grokCli(undefined as any)`, or `new grokCli(' ')`; a settings/config object passing an empty model id into createModel.

Common situations: Environment variable for the model unset and defaulted to empty string; typo'd config key so the modelId resolves to undefined; migrating from another provider where the id field has a different name.

Related errors

• Generated object does not match schema: ${validationError.me
• NoSuchModelError (textEmbeddingModel, modelId: ${modelId})
• NoSuchModelError (imageModel, modelId: ${modelId})
• ${this.name} Model ID is required
• MFA_VERIFICATION_FAILED

AI-assisted analysis of eyaltoledano/claude-task-master@c0c98d367c (2026-08-29). Data as JSON: /api/errors/63cb5184f9f3e83d. Report an issue: GitHub.