earendil-works/pi · error

${sse.data}

Error message

${sse.data}

What it means

Error "${sse.data}" thrown in earendil-works/pi.

Source

Thrown at packages/ai/src/api/anthropic-messages.ts:473

	} finally {
		reader.releaseLock();
	}
}

async function* iterateAnthropicEvents(
	response: Response,
	signal?: AbortSignal,
): AsyncGenerator<RawMessageStreamEvent> {
	if (!response.body) {
		throw new Error("Attempted to iterate over an Anthropic response with no body");
	}

	let sawMessageStart = false;
	let sawMessageEnd = false;

	for await (const sse of iterateSseMessages(response.body, signal)) {
		if (sse.event === "error") {
			throw new Error(sse.data);
		}

		if (!ANTHROPIC_MESSAGE_EVENTS.has(sse.event ?? "")) {
			continue;
		}

		try {
			const event = parseJsonWithRepair<RawMessageStreamEvent>(sse.data);
			if (event.type === "message_start") {
				sawMessageStart = true;
			} else if (event.type === "message_stop") {
				sawMessageEnd = true;
			}
			yield event;
		} catch (error) {
			const message = error instanceof Error ? error.message : String(error);
			throw new Error(
				`Could not parse Anthropic SSE event ${sse.event}: ${message}; data=${sse.data}; raw=${sse.raw.join("\\n")}`,

View on GitHub (pinned to 4af9d21d3b)

Solutions

1. Inspect the SSE data payload in the message; it carries the Anthropic API error detail to handle.

When it happens

Trigger: Thrown at packages/ai/src/api/anthropic-messages.ts:473 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/7d247540d2590bfd. Report an issue: GitHub.