**Source URL:** https://limited.veevavault.dev/sitevault/ai-agents/references/limits

# Vault AI Agent Limits

<Aside type="note">
The functionality described on this page is only available to customers who have Vault AI enabled on their Vault.
</Aside>

When executing agent actions programmatically, Vault enforces the following limits.

**Per-action limits** apply to a single agent action execution:

*   Maximum 10 LLM calls per action.
*   Maximum 20 steps per action (each LLM call counts as one step; each tool call counts as one step).
*   Maximum 5 parallel tool calls per action.

**Root-action limits** apply across the full execution tree initiated by the outermost agent action, including any agent actions invoked through tool calls:

*   Maximum 20 LLM calls total across the root action tree.
*   Maximum 40 steps total across the root action tree.

When a limit is exceeded at runtime, Vault returns an appropriate error subtype.

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