Pricing

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Frequently asked questions

How does PolyDB Cloud usage billing work?

Usage is metered in credits. Every plan includes a monthly credit allotment (Small: 120, Medium: 280, Large: 650; Micro is a one-time 50-credit pack over 30 days). Each MCP tool invocation deducts credits from your balance. A single execute_workflow call with five steps consumes credits for the workflow runner plus each step it invokes. Read-only calls (query_sql, get_keyvalue, search_vectors, …) and write calls (store_document, store_timeseries, …) both deduct credits.

Can I upgrade or downgrade at any time?

Yes. Upgrades take effect immediately — your new limits apply within seconds. Downgrades take effect at the start of your next billing cycle so you are never charged twice for the same period. There are no upgrade or downgrade fees.

What happens when my credits run out?

When your credit balance reaches zero, additional MCP calls return HTTP 402 Payment Required with error code CREDIT_EXHAUSTED and a message linking to your billing dashboard. Your data is never deleted and existing data remains accessible — only new MCP calls are blocked until you top up. You can buy a credit pack a la carte from the dashboard or upgrade your plan to immediately restore access. We also email you when you cross 80% and 95% of your monthly allotment so you can plan ahead.

What happens if I exceed the storage included with my plan?

Each plan includes a baseline storage allocation (Micro: 5 GB, Small: 10 GB, Medium: 50 GB, Large: 200 GB). Storage is reconciled with the Neon usage feed; if your tenant grows past the included amount, you continue to operate normally — usage above the included allocation is billed by GB-month at standard overage rates. We’ll email you as you approach and exceed the included amount so there are no surprises.

What is the CockroachDB option on Large?

Large plan customers can optionally provision their tenant on CockroachDB Cloud instead of Neon PostgreSQL. CockroachDB is a distributed, multi-region SQL engine suited to globally distributed workloads, stricter consistency requirements, or teams already running CockroachDB elsewhere. Contact support to request a migration after sign-up. There is no additional charge — it is included in the Large plan price.

What is the cheapest way to try PolyDB Cloud?

The Micro plan is a one-time $9.99 purchase that gives you 50 credits over 30 days — no subscription required. If you need more, upgrade to Small ($39/mo) or higher at any time.

Do you offer annual billing?

Annual billing with a 20% discount is available on the Small, Medium, and Large plans. Contact billing@polydb.dev to switch.

What is execute_workflow?

execute_workflow lets you chain multiple provider calls in a single MCP request with $ref output passing — useful for RAG pipelines and multi-step automations that would otherwise require several round-trips. execute_workflow is available on every plan; each step in the workflow deducts credits as if you had called it individually, plus a small per-workflow runner cost.

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