Can I calculate sales tax with the Sphere API?

Yes. You post a transaction with the customer, product, and amount, and the API calculates and records the tax, which you can read back by external id. It can also apply tax inside a Stripe invoice or Checkout Session if you already bill through Stripe.

What are the rate limits for the Sphere API?

The Sphere OpenAPI spec does not publish fixed rate limits. Because customers, products, and transactions are keyed by your own external id, a retried call updates the same record instead of double-filing, so your agent can retry safely rather than depend on a documented request ceiling.

Is there a Sphere MCP server?

You do not need an MCP server to give your agent the Sphere API. Jentic connects it directly from the API Directory: import it, store your API key once, and your agent calls its operations. Operations are discovered on demand, so your agent's context stays lean instead of loading a full tool list up front.

Can I limit what my agent is allowed to do with the Sphere API?

Yes. Write a rule that allows only the tax-calculation, record, and transaction-read operations, so the agent can quote tax and record transactions but cannot cancel a filed transaction, and every call it makes is logged. Cancellation stays out of the allowed set until you add it.

How do I calculate sales tax with the Sphere API through Jentic?

Search Jentic for 'calculate sales tax on a transaction', and it returns the Sphere transaction operation with its input schema. Your agent posts the customer, product, and amount and reads the recorded tax back. To run it on your own infrastructure, install Jentic One from its GitHub repo.