Chinesezjc
ab40136b02
Addresses the review's remaining two items: - FRAME_PARSE_CAP_BYTES (64 MiB) drops an fd-3 frame whose raw length exceeds it BEFORE toString/JSON.parse: the 256 MiB wire ceiling bounds the bytes, not the decoded structure, and a compact wide frame near that ceiling could decode to far more host memory. A regression test writes a 65 MiB log frame plus a normal one and asserts the oversized frame is dropped while the trailing frame still lands in logs (fail-before: without the cap the oversized text is parsed and admitted, truncating the ledger so the trailing frame is dropped). The forged-oversized lower-bound test's frame is reduced to stay under the cap while still exercising the truncation path. - The log sink writes through the def-time bound encode+write primitives (not send_sync, whose body resolves _encode_json_plain and self.write_encoded at call time), so a rebind cannot break a log frame.
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.