earendil-works/pi · error · Error

Extension failed, blocking execution: ${String(err)}

Error message

Extension failed, blocking execution: ${String(err)}

What it means

Error "Extension failed, blocking execution: ${String(err)}" thrown in earendil-works/pi.

Source

Thrown at packages/coding-agent/src/core/agent-session.ts:502

	private _installAgentToolHooks(): void {
		this.agent.beforeToolCall = async ({ toolCall, args }) => {
			const runner = this._extensionRunner;
			if (!runner.hasHandlers("tool_call")) {
				return undefined;
			}

			try {
				return await runner.emitToolCall({
					type: "tool_call",
					toolName: toolCall.name,
					toolCallId: toolCall.id,
					input: args as Record<string, unknown>,
				});
			} catch (err) {
				if (err instanceof Error) {
					throw err;
				}
				throw new Error(`Extension failed, blocking execution: ${String(err)}`);
			}
		};

		this.agent.afterToolCall = async ({ toolCall, args, result, isError }) => {
			const runner = this._extensionRunner;
			const hookResult = runner.hasHandlers("tool_result")
				? await runner.emitToolResult({
						type: "tool_result",
						toolName: toolCall.name,
						toolCallId: toolCall.id,
						input: args as Record<string, unknown>,
						content: result.content,
						details: result.details,
						isError,
						usage: result.usage,
					})
				: undefined;

View on GitHub (pinned to 4af9d21d3b)

When it happens

Trigger: Thrown at packages/coding-agent/src/core/agent-session.ts:502 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of earendil-works/pi@4af9d21d3b (2026-08-24). Data as JSON: /api/errors/bc246a27420d179f. Report an issue: GitHub.