# Understand credits and execution limits

See how workspace credits, per-tool costs, billing-month allowances, daily execution caps and optional overage work.

Canonical: https://aroai.com/docs/credits/

## Credits belong to a workspace

The Researcher plan includes 1,000 credits per billing month. Plan allowances are shared by workspace members; they are separate from your AI client's subscription and model-token charges.

## Read the cost for the tool you call

- The three core workspace and documentation tools are free.
- The public NZBN search and entity tools cost one credit per call; each search page costs one credit.
- The two New Zealand calendar tools cost one credit per call.
- A workspace-supplied provider key can affect a paid-source charge where the tool supports it. Check the tool page for its current rule.

## Daily execution cap is separate

The plan's daily cap limits execution attempts, while credits track billable usage. Zero-credit calls still count toward the daily execution cap. Paid plans marked Unlimited have no numeric daily execution cap in the public plan catalog.

## Optional pay-as-you-go

A workspace can enable overage with a payment method and spend limit. The rate is set by billing currency: NZD 0.013, USD 0.008, AUD 0.012, EUR 0.0075 or GBP 0.0065 per credit. Not every tool necessarily costs one credit.

## Review usage

Use the portal's workspace usage and billing views for the current allowance, executions and billing settings. An execution error may refund reserved credits; the daily attempt can still count.