Files
deepseek-harness/packages/code-runtime
Chinesezjc 33318a5767 docs(code-runtime-python): state the real load-time rejections and finish the zh README
The README pair described `run()` as rejecting "a malformed binding namespace or
non-positive config", which understated and misplaced the configuration
failures: a non-Unix platform, a non-integer budget, a timer value setTimeout
would clamp, a budget larger than one fd-3 frame, and an incompatible
addressSpaceMb/output-budget pair all throw from the CONSTRUCTOR, so they fail
when the plugin loads rather than on a later run. Both sides now separate the
load-time platform/configuration errors from the run-result contract.

The Chinese README's Model Experience and KV Cache effect sections were still
untranslated English; the pairing record only tracks hashes, so it could not
show that. Both are now translated.
2026-08-31 14:30:02 +08:00
..

description, kind
description kind
Package map for the code-execution capability family: what program execution does for you, and which package owns each part. package-group

code-runtime/ — code-execution capability family

English | 中文

Summary

The code-runtime/ group provides program execution: a model writes one program that calls host-provided functions as ordinary async calls, and a runtime executes it in isolation and returns only what the program printed and returned. One package defines the shared capability (ctx.codeRuntime), a second executes TypeScript programs in a fresh Node worker thread, and a third owns the wire protocol between a Node host and a CPython subprocess for the Python backend. Every run is independent — no state carries from one program to the next — and failures come back as part of the result, so the caller can see why a program failed and feed that back to the model.

Table of Contents


Packages

These three packages together provide program execution; each README describes what its part does.

Package Role ctx key
code-runtime/ Defines what a code runtime does: run one program against host-provided bindings and report what it printed and returned ctx.codeRuntime
code-runtime-worker-thread/ Executes TypeScript programs, each in a fresh Node worker thread registers ctx.codeRuntime
code-runtime-python/ Owns the fd-3 wire protocol between a Node host and a CPython subprocess, the Python backend's protocol layer

Start with the subsystem reference for the service contract, then the PTC mode design that consumes this capability and the capability-seam model it follows.

Dev Note

Working context for maintainers — click to expand

None.