Developer Terms of Use

By creating a Mast developer account, using a Mast API key, or calling the Mast API, you agree to these Developer Terms of Use and the Developer Privacy Policy. If you use Mast on behalf of an organization, you confirm that you have authority to accept these terms for that organization.

Mast API keys are issued to a developer account after email verification. Keep secret keys private. Do not publish them in source code, client-side applications, screenshots, shared logs, public repositories, or URLs.

You are responsible for activity under your account and keys. Mast may reissue, rotate, suspend, or revoke keys to protect the service, respond to abuse, or correct account issues.

You may use the Mast API to display informational U.S. flag status, half-staff events, source metadata, and related status summaries in your own sites, dashboards, tools, or internal workflows.

Mast data is informational only. Your integration must not present Mast as an official government source or as the only source required for legal, policy, emergency, ceremonial, or compliance decisions.

Do not use Mast to overload the service, bypass rate limits, probe for vulnerabilities, scrape beyond published API behavior, resell API access as a standalone product, misrepresent source data, or interfere with other users.

Do not use Mast API responses in high-risk systems where an incorrect, delayed, or unavailable response could cause harm. Always provide a way for users to check official sources when accuracy matters.

Mast may change API responses, endpoints, rate limits, fields, documentation, pricing, license requirements, and service behavior over time. Mast may cache, delay, correct, remove, or replace data as source websites change or as parsers improve.

Mast does not guarantee uninterrupted availability, perfect source coverage, backward compatibility, or error-free data.

Mast links to official sources where available. If your integration shows an order or alert, you should preserve source links or otherwise make it easy for users to verify the original government source.

Mast may suspend or terminate developer access for abuse, security concerns, excessive traffic, violation of these terms, or activity that risks the reliability or reputation of the service.

Mast may update these developer terms. Continued use of a developer account or API key after changes means you accept the updated terms.

For developer terms questions, use the contact method published with the Mast project or site owner.