Research

The host, the checkpoint, and the loop after a failure.

Notes from the Linea team on executing the graph, holding the input each step saw, and operating the agent from those records.

Thesis

Why Linea is a runtime and control plane, not another way to draw a loop.

Thesis · 2026-08-04

Frameworks write the loop. They do not host the process, keep memory, or hold the checkpoint a single-node replay needs.

Focused notes on checkpoints, memory, and the code node.

Note · 2026-08-18

A step can only be replayed against the payload it originally received. That payload exists only if the host executed the run.

Note · 2026-07-28

The graph asks for memory. The host keeps it. Future executions can read what earlier ones learned.

Note · 2026-07-21

A code node is expected. It still has to run somewhere that cannot take the host down.