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Authorizations
OAuth 2.0 with opaque bearer tokens. Authorization-code requests require PKCE S256.
Headers
Pin a dated API release (YYYY-MM-DD). Omit for the latest (2026-06-09). Unknown values return 400 unsupported_api_version; the resolved version is echoed back in the X-API-Version response header.
Pattern:
^\d{4}-\d{2}-\d{2}$Example:
"2026-06-09"
Response
200
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