Story · Letta
Introducing Mods: Enabling Agents to Self-Improve through Harness-Level Adaptation (Letta)
Letta blog · Story page
Mods lets an agent extend and revise the Letta Code harness itself, not only its prompts, memory, or skills. It treats harness behavior as learnable state, building on Letta's versioned context store and self-editing memory tools.
Appeared in
- The AISI incident report, an agent that rewrote itself, and Letta Mods
Aug 06, 2026 · in the sections
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