Files
deepseek-harness/packages/code-runtime
Chinesezjc c435170a93 docs(code-runtime): drop the remaining shipped claims for the private experimental backend
The review's final wording items: the portable-identifier note's Scope said the
backend 'has since shipped' without noting it is experimental/private; the
RESERVED_WORDS JSDoc said backends 'ship for both languages'. Both now name the
TypeScript backend as released and the CPython backend as experimental and
private. The package README also records that the truncation-marker text and
tempdir prefix keep the pre-rename short names (byte-anchored by tests,
independent of the npm name).
2026-08-31 15:19:22 +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

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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
experimental/code-runtime-python/ The experimental Python backend: owns the fd-3 wire protocol between a Node host and a CPython subprocess and the CPython runtime implementation

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.