microsoft/vscode · error · Error

Copilot API endpoint is not available

Error message

Copilot API endpoint is not available

What it means

Error "Copilot API endpoint is not available" thrown in microsoft/vscode.

Source

Thrown at extensions/copilot/src/extension/chatSessions/copilotcli/node/missionControlApiClient.ts:211

	 *
	 * The base URL is resolved via the Copilot token's `endpoints.api` which is
	 * GHES-aware.
	 */
	private async _buildRequest(
		path: string,
		authOptions: McAuthOptions,
	): Promise<{ url: string; headers: Record<string, string> }> {
		const session = authOptions.createIfNone
			? await this._authService.getGitHubSession('permissive', { createIfNone: authOptions.createIfNone })
			: await this._authService.getGitHubSession('permissive', { silent: true });
		if (!session?.accessToken) {
			throw new PermissiveAuthRequiredError();
		}

		const copilotToken = await this._authService.getCopilotToken();
		const baseUrl = copilotToken.endpoints?.api;
		if (!baseUrl) {
			throw new Error('Copilot API endpoint is not available');
		}

		const url = `${baseUrl.replace(/\/+$/, '')}${path}`;
		const headers: Record<string, string> = {
			'Authorization': `Bearer ${session.accessToken}`,
			'Copilot-Integration-Id': INTEGRATION_ID,
		};
		return { url, headers };
	}
}

View on GitHub (pinned to a94b963a32)

When it happens

Trigger: Thrown at extensions/copilot/src/extension/chatSessions/copilotcli/node/missionControlApiClient.ts:211 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/3f5b69f8c6ea4c79. Report an issue: GitHub.