tool call {tool_call_id} disappeared during output linking

Error message

tool call {tool_call_id} disappeared during output linking

What it means

Error "tool call {tool_call_id} disappeared during output linking" thrown in openai/codex.

Source

Thrown at codex-rs/rollout-trace/src/reducer/tool.rs:472

                item.thread_id == thread_id
                    && item.call_id.as_deref() == Some(call_id)
                    && kinds.contains(&item.kind)
            })
            .map(|item| item.item_id.clone())
            .collect::<Vec<_>>()
    }

    fn add_tool_call_item(&mut self, tool_call_id: &str, item_id: &str) -> Result<()> {
        let Some(tool_call) = self.rollout.tool_calls.get_mut(tool_call_id) else {
            bail!("tool call {tool_call_id} disappeared during conversation linking");
        };
        push_unique(&mut tool_call.model_visible_call_item_ids, item_id);
        Ok(())
    }

    fn add_tool_output_item(&mut self, tool_call_id: &str, item_id: &str) -> Result<()> {
        let Some(tool_call) = self.rollout.tool_calls.get_mut(tool_call_id) else {
            bail!("tool call {tool_call_id} disappeared during output linking");
        };
        push_unique(&mut tool_call.model_visible_output_item_ids, item_id);

        let Some(item) = self.rollout.conversation_items.get_mut(item_id) else {
            bail!("conversation item {item_id} disappeared during output linking");
        };
        let producer = ProducerRef::Tool {
            tool_call_id: tool_call_id.to_string(),
        };
        if !item.produced_by.contains(&producer) {
            item.produced_by.push(producer);
        }
        Ok(())
    }

    fn link_tool_to_inference_response(&mut self, tool_call_id: &str) {
        let Some(tool_call) = self.rollout.tool_calls.get(tool_call_id) else {
            return;

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/rollout-trace/src/reducer/tool.rs:472 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of openai/codex@339751715c (2026-08-25). Data as JSON: /api/errors/10f0b3ff964a3295. Report an issue: GitHub.