X API v2 — Getting started
New page: Free credit incentives (/x-api/getting-started/free-credits). It documents two pay-per-use incentives: $20 for saving a first eligible payment card, and a one-time match of the first successful auto-recharge up to $50 (up to $70 if both apply). The page covers who qualifies, when credits are granted, how they behave (auto-applied, spent before purchased credits, expire 3 months after grant), stacking, examples, and FAQ.
Pricing (/x-api/getting-started/pricing) now points to those incentives, including a tip on the auto-recharge match.
X API v2 — Batch compliance
Integrate (/x-api/compliance/batch-compliance/integrate) now documents compressed uploads (Content-Encoding: gzip, concatenated gzip members, 100 MB limit on decompressed content). Related updates: upload cap 100 MB (~5 million IDs); processing time driven mainly by ID time span; a 36-hour job ceiling (failed if exceeded—split by time period and resubmit); and status handling for invalid gzip (400) and unsupported Content-Encoding (415).
Quickstart (/x-api/compliance/batch-compliance/quickstart) matches the 100 MB file size and links to compressed uploads.
Fundamentals
Overview (/overview) and Developer portal (/fundamentals/developer-portal) now link to the free-credit incentives.
Changelog
Changelog (/changelog) adds an Oct 2, 2026 X API v2 entry for the pay-per-use free credit incentives and points to the new page.