> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sontairo.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Plan Limits

> Resource limits enforced by plan tier

Sontairo enforces resource limits based on your workspace’s subscription **plan tier**. Limits apply in the API and dashboard when creating or enabling resources.

## Limits by tier

| Resource                            | Free              | Plus                      | Pro                       | Ultra                      |
| ----------------------------------- | ----------------- | ------------------------- | ------------------------- | -------------------------- |
| **Agents (plan default)**           | 3                 | 10                        | Unlimited                 | Unlimited                  |
| **Connectors (plan default)**       | 5                 | 20                        | Unlimited                 | Unlimited                  |
| **Tool calls (per billing period)** | 10,000 (hard cap) | 20,000 + optional overage | 50,000 + optional overage | 100,000 + optional overage |

For tool-call overage rates, add-ons, and feature packaging, see [Plans & Pricing](/billing/plans).

<Note>
  **Connectors (free plan):** creating connectors is currently limited to **five active connectors per workspace** (counted across all projects). Paid tiers use the configured plan limits shown under **Usage**; enforcement is extended over time as features evolve.
</Note>

## How limits are enforced

Limits are enforced **server-side** when creating agents, connectors, or executing tool-heavy workflows. If you exceed a limit, the API returns an error that explains the restriction and may suggest upgrading.

### Connector limit

On **Free**, only a small number of **active** connectors are allowed **per workspace** (see the note above). On other tiers, refer to **Usage** for the effective connector cap.

### Agent limit

Numeric agent caps are part of your plan configuration (defaults in [Plans & Pricing](/billing/plans)). Check **Usage** for the values applied to your workspace.

## Exceeding limits

If you hit a limit:

1. You’ll see an error in the UI or API response.
2. Disable unused connectors, remove agents you no longer need, or reduce automated tool usage.
3. [Upgrade your plan](/billing/plans) for higher included usage and higher caps.

<Tip>
  Disable connectors you are not actively using instead of deleting them when possible. Disabled connectors often do not count toward your limit and can be re-enabled later.
</Tip>