Skip to main content
Applicable to: Users who build or invoke agents with the TrueFoundry agent builder (the previous Agents sidebar section: Playground, Registry, and Sessions). If you do not use the agent builder, this change does not affect you.

What Is Changing

The agent builder is moving out of the main TrueFoundry sidebar Agents section into a dedicated Trueforge portal. Open it from the sidebar under TRUEFORGE → Build Agents.
TrueFoundry sidebar with the Agents section highlighted, showing Playground, Registry, and Sessions

Before: agent builder lived under Agents (Playground, Registry, Sessions) in the main sidebar

TrueFoundry sidebar with the TRUEFORGE section highlighted, showing Build Agents with a New badge

After: open the agent builder from TRUEFORGE → Build Agents

Clicking Build Agents opens the Trueforge portal — the managed agent builder experience:
Trueforge portal showing New Chat, Build Agent, Agents, Sessions, and Schedules in the left navigation

Trueforge portal — the managed agent builder

Trueforge is powered by our open-source agent harness (truefoundry/trueforge). TrueFoundry provides a managed version of that harness in the platform.

Existing agents

Agents you built earlier with the agent builder are migrated automatically to Trueforge. Open Build Agents to find and continue working with them there.

APIs

If you invoke agents via APIs, the older APIs continue to work until 15th October, 2026. We recommend migrating to the new Trueforge APIs as soon as possible.

Why This Change

The agent builder is moving onto Trueforge so you get a dedicated portal for building and running agents, backed by the same open-source harness you can run yourself, with a managed experience on TrueFoundry.

What You Need to Do

1

Use Build Agents in the sidebar

Go to TRUEFORGE → Build Agents instead of the previous Agents sidebar section (Playground, Registry, Sessions). Your existing agents appear in Trueforge after migration — no recreate step is required for agents built in the old builder.
2

Migrate to the new Trueforge APIs

Older agent APIs continue to work until 15th October, 2026. Migrate to the new Trueforge APIs as soon as possible.

References


If you have questions about the migration or run into anything unexpected, reach out to support@truefoundry.com — we’re happy to help.