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HomeDocsClaude Code CLI 9 Oct 2026
One change · claude-code

Monitoring changedmonitoring-usage

Nearest release: v2.1.296, published 2 hours after upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Upstream edited this page at 9 Oct 2026 14:19 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 9 Oct 2026 14:37 UTC.

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From line 841 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits60to this page, all time

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841841* `error`: Error message
842842* `status_code`: HTTP status code as a number. Absent for non-HTTP errors such as connection failures.
843843* `duration_ms`: Request duration in milliseconds
844* `attempt`: Total number of attempts made, including the initial request (`1` means no retries occurred)
844* `attempt`: Number of attempts made, including the initial request. [Detect retry exhaustion](#detect-retry-exhaustion) says when the count starts again
845845* `request_id`: API request ID, such as `"req_011..."`, described under [Event correlation attributes](#event-correlation-attributes).
846846* `client_request_id`: Client-generated UUID sent as the `x-client-request-id` request header. Available even when a failure such as a timeout or connection error never produced a server `request_id`; see the [event correlation attributes](#event-correlation-attributes) table for when it's present. Requires Claude Code v2.1.214 or later
847847* `speed`: `"fast"` or `"normal"`, indicating whether fast mode was active
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13991399Claude Code retries failed API requests internally and emits a single `claude_code.api_error` event only after it gives up, so the event itself is the terminal signal for that request. Intermediate retry attempts are not logged as separate events.
14001400 
1401The `attempt` attribute on the event records the total number of attempts. `CLAUDE_CODE_MAX_RETRIES` defaults to 10 and is capped at 15. On v2.1.199 or later, you can set `CLAUDE_CODE_RETRY_WATCHDOG` to raise the default and remove the cap.
1401The `attempt` attribute on the event records the number of attempts. `CLAUDE_CODE_MAX_RETRIES` defaults to 10 and is capped at 15. On v2.1.199 or later, you can set `CLAUDE_CODE_RETRY_WATCHDOG` to raise the default and remove the cap.
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1403When the request exhausts all retries on a transient error, `attempt` equals one more than that effective limit: 11 by default, and never more than 16 unless the watchdog is set. A lower value indicates a non-retryable error such as a `400` response, or a cause with its own smaller retry budget. For example, Claude Code retries a failure to load AWS or Google Cloud credentials at most twice.
1403When the request exhausts all retries on a transient error, `attempt` is at most one more than that effective limit: 11 by default.
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1405A lower value can still mean the retries ran out: `attempt` starts again from `1` each time Claude Code re-issues the request after a streaming failure.
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14051407To distinguish a session that recovered from one that stalled, group events by `session.id` and check whether a later `api_request` event exists after the error.
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