My assistant says 'Request limit reached for this product.' Is that the same as running out of units?

No: Request limit reached for this product. means your account's quota for that product is used up; units belong only to the self-serve platform.

On the Casafari MCP server, when a product's quota is used up, its tools answer with that message. Stop calling that product; retrying will not help. The error table in Authentication lists it. Casafari publishes no quota figures for the Casafari MCP server or the Casafari REST API, so ask Casafari (https://www.casafari.com/) about the quota in your contract. See also rate limits and quotas.

Units, credits and 402 payment_required errors are how the self-serve platform at platform.casafari.com bills new users. They do not apply to your subscription or contract (how the self-serve platform handles it). Nothing changes for you: what changes for existing clients.