The review found the 62 floor off by two (the marker's fixed prefix is 51 characters counting both square brackets, so marker(62) serializes to 63) and the constructor error over-claiming a bound the marker-as-envelope design does not deliver. Fixes: - MIN_LOG_BYTES is 64 (marker-only serialization fits with one byte of room); the JSDoc arithmetic counts the brackets; the rejection test pins 63; the forged-frame test uses 11 NULs (69 escaped) at 64. - The constructor error now states the marker-only guarantee, and the README Known Limitations (en + zh) records the real bound: a truncated run with admitted entries serializes its logs to maxLogBytes + marker + envelope. - The SIGXCPU-mask tests burn with time.process_time() instead of wall-clock perf_counter, so a contended CI runner cannot under-burn the budget. - The settlement note (en + zh) records the 64 floor and the marker envelope bound, including the zh pre-encode section that the earlier pass missed. - The README constructor-rejection list names the maxLogBytes floor. Pairings re-recorded; corpus-wide verify-translation-pairing passes 1004.
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 | — |
Related documentation
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.
- Code runtime subsystem reference — request/result vocabulary, bindings, and the
ctx.codeRuntimecordis surface. - PTC mode Agent Note — how the tool registry presents
run_codeto the model. - Capability seams — the Service Definition / Service Provider / Consumer split this family follows.
Dev Note
Working context for maintainers — click to expand
None.