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TUI Apparently errors out with many agents #1733
Description
Version: v0.4.1 , I've migrated my modes to agents, and also did a migration of my agents to subagents like mentioned on the docs, but as I had a lot of agents with long descriptions and details I think TUI is getting a limit and crashing, here's the tail of the log generated:
{"read":true,"grep":true,"glob":true,"list":true,"bash":true,"write":false,"edit":false},"description":"Expert codebase navigator that helps developers understand and navigate large codebases by finding relevant code, mapping relationships, and providing clear navigation paths","mode":"subagent"}} mode={} plugin=[] username=arthur loaded
INFO 2025-08-08T21:51:27 +1ms service=models.dev file={} refreshing
INFO 2025-08-08T21:51:27 +3ms service=provider init
INFO 2025-08-08T21:51:27 +1ms service=provider providerID=ollama found
INFO 2025-08-08T21:51:27 +1ms service=provider providerID=openai found
INFO 2025-08-08T21:51:27 +0ms service=provider providerID=openrouter found
INFO 2025-08-08T21:51:27 +0ms service=provider providerID=anthropic found
INFO 2025-08-08T21:51:27 +0ms service=provider providerID=github-copilot found
INFO 2025-08-08T21:51:27 +3ms service=default cmd=["/home/arthur/.cache/opencode/tui/tui-3rxtw6py."] tui
INFO 2025-08-08T21:51:27 +0ms service=app name=agent registering service
INFO 2025-08-08T21:51:27 +1ms service=app name=lsp shutdown
ERROR 2025-08-08T21:51:27 +5ms service=default name=Error message=E2BIG: argument list too long, posix_spawn '/home/arthur/.cache/opencode/tui/tui-3rxtw6py.' fatal
Reacted by Arsham Shirvani
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thdxr commentedon Aug 9, 2025
how are you starting opencode?
arthur404dev commentedon Aug 9, 2025
Starting it normally, by
opencodewithout any parameter.The agents were all defined globally as markdown files. Roughly 20 subagents.
When removing the agents opencode works normally
arsham commentedon Aug 11, 2025
I've noticed this is not related to the amount of agents, you can remove parts of an agent's prompt and it can continue working. My guess is that is due to the large concatenated prompts.
arthur404dev commentedon Aug 13, 2025
@thdxr can confirm that this happens related to the total amount of data being streamed into TUI coming from the agents, not the agent number. I've experimented with the BMAD prompt, and just one agent with 1000+ lines is enough to break opencode execution.
rekram1-node commentedon Dec 28, 2025
[automated] Closing due to 90+ days of inactivity. Feel free to reopen if you still need this!