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Sweep 28 Aug 2026 ยท 16:06Z Build v2.1.251 479 read Stable v2.1.236 Latest v2.1.251 Next v2.1.251 Feeds RSS JSON llms.txt

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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7 pages for traceparent.

Titles and paths first, then pages whose text carries it. Each row opens that page as this site last read it.

Observability with OpenTelemetry Claude Code CLI · in the page agent-sdk/observability …an OpenTelemetry span is active in your application, the SDK injects `TRACEPARENT` and `TRACESTATE` into the child process environment, and the CLI reads them so its `claude_code.interaction` span bec… Claude Code changelog Claude Code CLI · in the page changelog …g * Fixed OTLP event log records missing `trace_id`/`span_id` when `TRACEPARENT` is set in SDK/headless mode * Fixed conversations with many images incorrectly failing with "Request too large" err… Monitoring Claude Code CLI · in the page monitoring-usage …is active, Bash and PowerShell subprocesses automatically inherit a `TRACEPARENT` environment variable containing the W3C trace context of the active tool execution span. This lets any subprocess tha… SEP-414: Document OpenTelemetry Trace Context Propagation Conventions Model Context Protocol · in the page seps/414-request-meta …ing: 1. When OTel trace context is propagated via `_meta`, the keys `traceparent`, `tracestate`, and `baggage` follow [W3C Trace Context](https://www.w3.org/TR/trace-context/) and [W3C Baggage]… Overview Model Context Protocol · in the page specification/2026-07-28/basic/index …iptions](/specification/2026-07-28/basic/patterns/subscriptions) | | `traceparent`, `tracestate`, `baggage` | OpenTelemetry trace context propagation | OpenTelemetry trace co… Key Changes Model Context Protocol · in the page specification/2026-07-28/changelog …penTelemetry trace context propagation conventions for `_meta` keys (`traceparent`, `tracestate`, `baggage`) ([SEP-414](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/414)). 3. Serv… Overview Model Context Protocol · in the page specification/draft/basic/index …ubscriptions](/specification/draft/basic/patterns/subscriptions) | | `traceparent`, `tracestate`, `baggage` | OpenTelemetry trace context propagation | OpenTelemetry trace co…