Great breakdown of the cost vs control tension across agent tools. The change budget idea is smart for controlling agent scope, but one under-discussed angle is how these budgets interact with credential management. When your agent can change N files per session, it is also potentially changing which credentials, API keys, or service accounts it uses. A change budget that only counts code diffs misses the identity-side cost: how many re-authentications each agent session triggers, how many auth tokens expire mid-task, or how many times the developer has to re-approve an action across four different agent runtimes. That is where programmable credential infrastructure for AI agents starts to matter as much as the code-change budget itself. Standing audit trails and per-agent session keys let you apply the same budgeting discipline to the identity layer.
Great breakdown of the cost vs control tension across agent tools. The change budget idea is smart for controlling agent scope, but one under-discussed angle is how these budgets interact with credential management. When your agent can change N files per session, it is also potentially changing which credentials, API keys, or service accounts it uses. A change budget that only counts code diffs misses the identity-side cost: how many re-authentications each agent session triggers, how many auth tokens expire mid-task, or how many times the developer has to re-approve an action across four different agent runtimes. That is where programmable credential infrastructure for AI agents starts to matter as much as the code-change budget itself. Standing audit trails and per-agent session keys let you apply the same budgeting discipline to the identity layer.