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docs: the Scope allows a subprocess for stdio MCP (the twin of mercury-python #49) - #116
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…y-python #49) Eric ruled on 2026-11-03 that the language packs may run subprocesses so that they can host stdio MCP servers. That is the reason the MCP client work moved from the engines to the packs (RFC-0011). In lockstep with the Python twin, the README's Scope now says three things: a function always runs in this process; the one subprocess the pack may start is an MCP server reached over stdio, with the binding a later step; and the LLM helper is an application on the package whose llm.chat is configurable, either a stateless chat or a loop turn with a configured transcript store. CHANGELOG Changed 3 records it. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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…ows a subprocess for stdio MCP Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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What
llm.chatis configurable: a stateless chat, or one turn of a multi-turn tool-use loop whose transcript lives in the configured store.v4.12.21.Why
Eric ruled on 2026-11-03 that the language packs may run subprocesses so they can support stdio MCP. That is the reason the MCP client work moved from the engines to the packs: no engine starts a child process. The two packs' Scope sections stay word for word alike apart from the language, as their Visions do. The pack's Vision was amended in memory the same day.
Docs only: no code, configuration or package change.
Co-Authored-By: Claude Opus 5.5 noreply@anthropic.com
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