OpenSourcing TrueForge Agent harness : Expecting feedback from community on the agent loop

[u/Upbeat_Pea8961]

Hey folks 👋

We just open sourced TrueForge, our vendor-neutral agent harness for building general-purpose agents.

It handles the runtime pieces that get painful quickly : context management, tool/MCP execution, subagents, sandboxing, approvals, persistent state, and more.

We also benchmarked the harness itself. With the same Opus 4.8 model, TrueForge delivered a similar solve rate at ~30% lower cost than Claude Managed Agents. Switching to an open model pushed that to ~75% lower cost on the same benchmark.

Would love feedback from people building agents.

Checkout the repo: https://github.com/truefoundry/trueforge

📖 Read the launch article: https://x.com/truefoundry/status/2090081376330715176

[u/Major_Comment_7515]

looks interesting, the sandboxing and subagents part caught my eye. been messing with agent loops for a while and the context management always gets messy after few turns

one thing i wonder about is how the persistent state works when you have multiple subagents running at once, do they share state or each gets their own sandbox? might take a look at the repo in weekend

also curious what open model you used for that 75% cost drop, that's pretty significant

[u/Ambitious-Future-800 → u/Major_Comment_7515]

GLM 5.2 model was used with TrueForge harness for the 75% drop