How often is the REA letter sent?

Once a month. A letter is listed on this page when its page exists. Nothing is listed before then.

Does a REA account join the letter?

Only if the signup box is checked. The box is not checked. The account and the key are created either way. A checked box sends a confirm message and does not create the key. This page can also join the list. An address stays pending until it is confirmed.

How do I leave the REA letter?

Use the leave link in the confirm message. You can also write to elijah@reacontrolplane.com with the subject Leave the letter.

Newsletter

A monthly newsletter on building safe agents.

One letter a month. How to keep an agent inside its limits, what changed in the controls, and the security notes worth reading. An account does not put you on the list.

Join

This does not create an account or a key. A confirm message is sent to that address. The address is not on the list until you open the link in it. Letters are listed below. Nothing is listed until its page exists.

The confirm message contains a leave link. You can also write to elijah@reacontrolplane.com with the subject Leave the letter. Closing an account does not do it, and joining the list does not open an account.

Letters

November 1, 2026 · Introducing REA ControlPlane: cost, policy, and runtime control in one hop · 5 min read

Socials

Questions

Does signup join the newsletter? Only if the box on the account form is checked. The box is not checked. The account and the key are created either way. A checked box sends a confirm message. This page can also join the list.

How often? Once a month. If a month has nothing that meets the bar, that month is skipped and this page says so.

Who sends it? REA Research Labs, Inc., from elijah@reacontrolplane.com.