solnk publishes to X through X's official API. X charges API usage per request, so X publishing uses a separate included allowance inside your normal solnk plan. It is not an extra subscription or wallet.
Content and media limits
- Text: up to 280 characters per post
- Images: up to 4; JPEG, PNG, GIF, and WebP; up to 5 MB each
- Video: 1 MP4 or MOV video; up to 512 MB and 2 minutes 20 seconds
- Mixed media: images and video cannot be combined in one post
- First comment: supported as a reply to the main post; up to 280 characters
- Threads: not currently available in the solnk composer
Standard posts and URL posts
An X post containing a web address uses the higher URL-post allowance rate. This includes full links such as https://solnk.com/mcp and bare domains that X automatically turns into links.
| X operation | Allowance value used |
|---|---|
| Standard post without a URL | $0.015 |
| Post containing a URL | $0.20 |
| Analytics read | $0.005 |
These values describe how much of your included X allowance the operation consumes. They are not separate charges added to your solnk invoice.
Included allowance by plan
| Plan | X publishing allowance | X analytics allowance |
|---|---|---|
| Free | Up to 5 standard posts per month; URL posts are not available | Not included |
| 7-day Pro trial | Up to 10 standard posts during the trial; URL posts are not available | Not included |
| Pro | Shared monthly pool worth up to 400 standard posts or 30 URL posts | Up to 100 post reads per month |
| Premium | Shared monthly pool worth up to 1,200 standard posts or 90 URL posts | Up to 300 post reads per month |
Standard and URL posts draw from the same pool. The examples above show the maximum when you use only one post type; mixed usage produces a lower combination of both.
How first comments are counted
An optional first comment is a second X post and consumes allowance separately.
Examples:
- Standard main post only: $0.015 of allowance
- URL main post only: $0.20 of allowance
- URL main post plus a standard first comment: $0.215 of allowance
- URL main post plus a first comment containing a URL: $0.40 of allowance
The main post remains successful if the optional first comment fails. A failed operation can remain reserved because the request may already have reached X. Retrying the same stored publish reuses the customer allowance reservation, although it can still create additional real X API cost for solnk.
What happens when the allowance is unavailable
The post is stopped before solnk uploads media or sends the create-post request to X. You may see one of these messages:
- Monthly X publishing allowance reached — wait for the next allowance period or move to a plan with a larger pool.
- An active Solnk plan is required to use X API features — restore an active Free, trial, Pro, or Premium plan.
- X API requests are temporarily paused while the prepaid balance is replenished — this is a solnk-wide safety pause; retry after service is restored.
- Usage protection could not be verified — solnk failed closed to prevent an untracked X charge; retry later.
The composer identifies URL posts before submission and shows whether the standard or higher X allowance rate will be used.