Roundups of the best SEO API in 2026 compare endpoints for keywords, links, and crawls. Read them if you are building software. Skip them if you have a site to fix.
The roundup's blind spot
Affordable alternatives to Moz, Ahrefs, and Semrush are framed as cheaper data. Cheaper rows are still rows. A founder with one marketing site does not need a thinner Semrush. They need the broken URL.
When the API is rational
You have engineers, a place to store JSON, and a feature that shows someone else's data inside your product. Then compare vendors on fields, freshness, terms, and price per call. That work is procurement.
When to stop shopping
If the trigger was 'our SEO tool feels expensive and unused,' an API increases the unused surface. Run a free check here. Keep a suite only for the dataset you still open.
What is the affordable alternative to Ahrefs and Semrush?
For diagnosis, Fix SEO Today at $19 or $99 a month. For a link index, there is no honest $19 substitute. Do not buy a toy index.
Will you launch an API in 2026?
Not as a promise on this page. The product is the check.
Why is Fix SEO Today cheaper?
The 2026 SEO APIs from Moz, Ahrefs, and Semrush are extremely expensive credit packs. Fix SEO Today is cheaper because you pay for the diagnosis. A free peek, then $19 a month for one project or $99 a month for unlimited projects. That covers the crawl and the plain-English fix list, including GEO. It leaves out the backlink index, the rank-tracker seats, and the ads module.