GramScraper
Instagram and TikTok data API with 91 endpoints for profiles, posts, stories, reels, and comments

Read Twitter / X data and post tweets, likes, retweets, follows, DMs via REST.
GetXAPI is a free Social API that requires apiKey authentication, is served over HTTPS and has unconfirmed CORS support.
GetXAPI is the cheapest Twitter API and X API. $0.001 per call returns ~20 tweets ($0.05 per 1,000). Fetch tweets, profiles, followers. No dev account.
Details from getxapi.com.

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Geocode an address, validate an email, track a flight or pull stock data with one account, one dashboard and one API key.
Instagram and TikTok data API with 91 endpoints for profiles, posts, stories, reels, and comments
The GetXAPI is provided by GetXAPI (getxapi.com). GetXAPI is the cheapest Twitter API and X API. $0.001 per call returns ~20 tweets ($0.05 per 1,000). Fetch tweets, profiles, followers. No dev account.
Yes. The GetXAPI is listed in the Social category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Yes. The GetXAPI uses apiKey authentication, so you need to register for credentials before making requests.
CORS support for the GetXAPI is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The GetXAPI is served over HTTPS, so it's safe to use in production.