Provider ${providerId}: no authentication method configured.

Error message

Provider ${providerId}: no authentication method configured.

What it means

Error "Provider ${providerId}: no authentication method configured." thrown in earendil-works/pi.

Source

Thrown at packages/coding-agent/src/core/provider-composer.ts:451

	const getModels = () => {
		let models = applyExtension(
			providerId,
			applyModelsJson(providerId, base?.getModels() ?? [], config),
			currentExtension(),
		);
		if (extensionOAuthCredential && extension?.oauth?.modifyModels) {
			models = extension.oauth.modifyModels(models, extensionOAuthCredential);
		}
		return models.map((model) => {
			const override = config?.modelOverrides?.[model.id];
			return override ? applyModelOverride(model, override) : model;
		});
	};
	// Validate eagerly so registration/reload reports structural errors immediately.
	getModels();
	const apiKey = composeApiKeyAuth(providerId, base, config, extension);
	const oauth = composeOAuthAuth(providerId, base, config, extension);
	if (!apiKey && !oauth) throw new Error(`Provider ${providerId}: no authentication method configured.`);

	const supportsBaseApi = (model: Model<Api>) => base?.getModels().some((entry) => entry.api === model.api) ?? false;
	const streamWith = (
		model: Model<Api>,
		context: Context,
		options: StreamOptions | undefined,
		simple: boolean,
	): AssistantMessageEventStream =>
		lazyStream(model, async () => {
			if (extension?.streamSimple && model.api === extension.api) {
				return extension.streamSimple(model, context, options as SimpleStreamOptions);
			}
			if (base && supportsBaseApi(model)) {
				return simple
					? base.streamSimple(model, context, options as SimpleStreamOptions)
					: base.stream(model, context, options);
			}
			const api = getApiProvider(model.api);

View on GitHub (pinned to 4af9d21d3b)

When it happens

Trigger: Thrown at packages/coding-agent/src/core/provider-composer.ts:451 when the library encounters an invalid state.

Common situations: See trigger scenarios.

Understand the failure class

Authentication and authorization failures — expired tokens, bad credentials, and missing scopes.

AI-assisted analysis of earendil-works/pi@4af9d21d3b (2026-08-24). Data as JSON: /api/errors/e2ac276c736aa34f. Report an issue: GitHub.