You'll notice
OTLP headers/attributes now warn if you use the legacy string encoding.
otlpHeaders and otlpResourceAttributes now go through a kvRecord wrapper carrying a legacyKvEncodingNotice deprecation warning, which flags that using the legacy string encoding will result in no headers or attributes being sent.
Names in the bundleotlpHeadersotlpResourceAttributes
Documented inclaude-docs/cowork/changelog
The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.
Confirmed since
Anthropic's documentation has since written up otlpResourceAttributes, on Configuration reference.
| <span id="otlpresourceattributes" />OpenTelemetry resource attributes<br />`otlpResourceAttributes` | `object` | MDM + Bootstrap<br />Added in 1.5354.0 | — | Extra resource attributes to attach to every span/metric. A static enduser.id s…third-party/claude-desktop/configuration see the edit
Confirmed since
Anthropic's documentation has since written up otlpHeaders, on Configuration reference.
| <span id="otlpheaders" />OpenTelemetry exporter headers<br />`otlpHeaders` | `object` | MDM + Bootstrap<br />Added in 1.2581.0 | — | Static collector headers — routing and tenant headers only. No credentials here; use Collector authentic…third-party/claude-desktop/configuration see the edit
One source agreesOne thing we can check says the same as this entry.
Anthropic's documentation agrees
Anthropic's documentation has since written up otlpHeaders, on Configuration reference.