Claude Code v2.1.319 ·
The gateway can tag requests with a billing group
Gateway operators can now set a billing group tag so requests are logged by group, with the tags stripped before sending on
You'll noticeTier: how much it should matter to you
4Useful: my rating, 1 to 5
4Signal: worth watching, 1 to 5
LLM GatewayArea: what it touches
New FeaturesKind: in v2.1.319,
What probably matters to youSection of the release
What
The gateway is a server that passes Claude Code's requests on to the model provider. It gains an optional billing group feature:
- A request to
POST /v1/messages can carry tags in its body.
- The admin setting
admin.billing_group_tag names which tag marks the group.
- The gateway records the group in its audit log and emits a
spend.metered event when the tag is configured.
- It removes
tags and the request-tags-2026-08-21 beta value before sending the request on.
- For Bedrock, Bedrock Mantle and Vertex, these are always removed.
Why
If you run a gateway, you can attribute spending to groups of requests without the tags reaching the upstream provider.
See this entry in the whole of v2.1.319 →
