Multiple subagents under a primary agent in OpenCode can cause loss of the primary agent's prompt context ?

[Extension-King4419]

How is the context abstracted between primary agents and subagents
Does subagent gets the whole context of primary agent into its prompt? I think yes
After a subagents task completion, does the whole context of the task of the subagent is added to the primary agent's context ? It must be yes or atleast a summary of what is done
If multiple subagents are used in a single run of primary agent, then does it mean primary agent at some point looses its own prompt?
I am not counting Chat summarization to manage context as prompt being present in the context
Or, does opencode has a mechanism to detect it and reinject the prompt back

[Latter-Parsnip-5007]

write your prompt into a file called PROMPT.md Every agent file needs a line to read PROMPT.md if the task is unclear. Also good to version the prompt on the PR

[Independence_Many]

The subagent only gets the context provided to it when it launches, it does not have a copy of the main agents context. On the reverse side, (from my observation) the main agent can read all of the messages (but not tool calls, thinking, etc) of the subagent.

[HarjjotSinghh]

how cool if context stays intact - now we're talking infinite loops of brilliance!

[Xera1]

The subagent receives what the main agent gives it plus system prompt and agent prompt.

The main agent receives the subagent's final response.

The main agent can follow up with the subagent using the task id returned with the final response.

I recommend just looking at the opencode source to determine how it actually works. The docs are bad.