API, MCP, widgets and connectors
With a key you get a limited, non-exclusive, non-transferable and revocable right to call our data API, our MCP server, our widgets and our spreadsheet connectors, within your plan's limits, for as long as your plan lasts.
Keys. API and MCP keys are secrets: keep them server-side, never in a public repository or an app you ship. Widget keys are public by design, so restrict them to the domains you register. Everything done with your keys counts as done by you. Rotate or revoke a key in your developer console; we can revoke a key that is abused.
Limits. Each plan has a monthly request quota, a per-minute burst limit, a key count, a page size and, for widgets, the number of domains you may register. Over the quota we answer 429 and nothing is billed on top - there is no overage. Do not work around limits with extra accounts, spoofed referrers or shared keys. The free tier of the data API and the MCP server is for personal, non-commercial use; commercial use of those needs a paid plan. Widgets may be used free within the published attribution rules.
If a paid plan ends, keys you already created keep working within the free tier's limits, and you cannot create new ones above them. Deleting your account removes your keys and webhooks.
What you may not do with what you receive: resell it, redistribute it, publish it as a dataset, mirror it in bulk, or use it to build or feed a competing market-data product. Use it in your own product or page, not as a copy of ours. Third-party content that we pass through - headlines, links, brand names - stays with its owner.
Widgets must keep the "Powered by Bitculator" link visible and unaltered, and must not be cropped, restyled to hide it, or presented as your own data or as an endorsement by us.
Changes. We follow the published API policies: no breaking change inside a version, at least six months' notice before a version is removed or a plan's limits are cut, announced in the changelog and by email to key owners.
No service level. The API, the MCP server and the widgets are provided as a service without an uptime guarantee; the status page is informational. Webhooks are best effort: we attempt a delivery three times and switch an endpoint off after repeated failures, and you must verify the signature on anything you receive.
Our SDKs are published under the MIT licence; using them to call our service is still covered by these terms.