Grex rebuilt its own website

Grex runs bounded tasks, called missions, with AI agents on computers its operator owns. A builder agent makes the change, and a separate reviewer agent judges it against the acceptance criteria.

Grex’s own website still described Grex 1.x, the earlier version of the product. On October 28, 2026, the operator wrote the facts and the exact page copy for the rewrite. The rewrite is live on the site now. Grex 2.0 is a new version, built this month.

How the rewrite was broken into small pieces

The operator split the rewrite into eleven small missions, and Grex built and reviewed every change. By the end of the day there had been 36 mission attempts in total. Fourteen of those attempts were accepted, nineteen failed and three were cancelled.

One attempt changed too much at once

One cancelled attempt deleted too many old posts at once. Its change was larger than the reviewer accepts, so the reviewer never ran on it. It was split into smaller missions the next morning.

Most rejections came from the instructions

The reviewer is a separate agent, so the agent that did the work never accepts it. Most rejections came from the mission instructions rather than from the builder. The reviewer sees only the change and the check results, not whole files. When a criterion depended on something outside the change, the reviewer marked it uncertain and rejected it.

Some rejections came from other causes:

• Asked to restate facts in its own words, the builder added small claims, and the reviewer rejected them.
• Two rejections came from bugs in the mechanical checks.
• One rejection caught a real problem: the builder had deleted a page’s existing grid styles.
• One rejection flagged a possible date-handling bug, and a new check showed the code was correct.

Adding mechanical checks that proved those points is what fixed the uncertainty. Giving the builder exact copy fixed the problem of added claims.

What is live on the site

The home page is now shorter, and it is built from bullet points. The rewrite reached further than the home page, and it touched several other areas:

• The how it works, product, architecture, availability and early-access pages were rewritten.
• Five pages about the old version were removed and redirected to the home page.
• Older blog posts about Grex 1.x were also removed from the site.

Where this work fell short

Nineteen of the 36 attempts failed, and one was cancelled for changing too much at once. Two rejections came from bugs in the checks meant to settle other questions. The rewrite began on October 28, 2026, and the oversized change was split into smaller missions the next morning.