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Sweep 25 Sep 2026 · 19:33Z Build v2.1.283 504 read Stable v2.1.274 Latest v2.1.283 Next v2.1.283 Feeds RSS JSON llms.txt llms-full.txt Unofficial
HomeDocsClaude Code CLI 25 Sep 2026
One change · claude-code

Observability with OpenTelemetry changedagent-sdk/observability

Nearest release: v2.1.283, published 4 hours before 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 25 Sep 2026 22:58 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 25 Sep 2026 23:07 UTC.

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First seen 14 Aug 2026 this site's first read of the page
Recorded edits7to this page, all time

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234234| ------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
235235| `OTEL_LOG_USER_PROMPTS=1` | Prompt text on `claude_code.user_prompt` events and on the `claude_code.interaction` span |
236236| `OTEL_LOG_TOOL_DETAILS=1` | Tool input arguments (file paths, shell commands, search patterns) on `claude_code.tool_result` events |
237| `OTEL_LOG_TOOL_CONTENT=1` | A [`tool.output` span event](/docs/en/monitoring-usage#tool-output-span-event) on `claude_code.tool` with file contents and Bash output, truncated at 60 KB by default, configurable via `CLAUDE_CODE_OTEL_CONTENT_MAX_LENGTH`, which requires Claude Code v2.1.214 or later. Requires [tracing](#read-agent-traces) to be enabled. Span attributes carry tool content under [their own gates](/docs/en/monitoring-usage#new-context-gates) |
237| `OTEL_LOG_TOOL_CONTENT=1` | A [`tool.output` span event](/docs/en/monitoring-usage#tool-output-span-event) on `claude_code.tool` with file contents, Bash output, and what MCP tools, WebFetch, and WebSearch return, truncated at 60 KB by default, configurable via `CLAUDE_CODE_OTEL_CONTENT_MAX_LENGTH`, which requires Claude Code v2.1.214 or later. Results from MCP tools, WebFetch, and WebSearch require Claude Code v2.1.283 or later. Requires [tracing](#read-agent-traces) to be enabled. Span attributes carry tool content under [their own gates](/docs/en/monitoring-usage#new-context-gates) |
238238| `OTEL_LOG_RAW_API_BODIES` | Full Anthropic Messages API request and response JSON as `claude_code.api_request_body` and `claude_code.api_response_body` log events. Set to `1` for inline bodies truncated at 60 KB by default, or `file:<dir>` for untruncated bodies on disk with a `body_ref` path in the event. `CLAUDE_CODE_OTEL_CONTENT_MAX_LENGTH` configures the inline truncation limit, and requires Claude Code v2.1.214 or later. Bodies include the entire conversation history and have extended-thinking content redacted. Enabling this implies consent to everything the three variables above would reveal |
239239 
240240Leave these unset unless your observability pipeline is approved to store the data your agent handles. See [Security and privacy](/docs/en/monitoring-usage#security-and-privacy) in the Monitoring reference for the full list of attributes and redaction behavior.
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