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Expose Python SDK history selection and per-turn options (#44084)

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## Why

Python callers need control over response history loading and a way to override the service tier for one turn. These options also need runtime compatibility checks to prevent older CLIs from silently ignoring them.

## What changed

- Add `include_turns` to sync and async thread resume/fork methods. Omission preserves server defaults; `False` skips response history loading without changing model context.
- Add `turn_service_tier` and `source` to sync and async `run()` and `turn()`, and generate both methods together to keep their options aligned.
- Require CLI `0.151.0` or newer when sending the new options, with lazy schema checks for unversioned local builds.
- Pin the bundled runtime dependency to `0.153.4` and reject unsupported runtime versions during SDK packaging.

## Testing

Add coverage for option forwarding, history flag omission and inversion, runtime version checks, cached schema probing, and packaging compatibility. Extend app-server and installed SDK smoke tests to exercise the new options.

GitOrigin-RevId: 4bcc9cff687b0651e67852e7c080df7fadac6d76
This commit is contained in:
Ahmed Ibrahim
2026-09-09 06:27:42 +00:00
committed by copyberry
parent 7b9e7d99bd
commit 8afccec87a
14 changed files with 667 additions and 108 deletions
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47
sdk/python/docs/api-reference.md
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@@ -67,8 +67,8 @@ Properties/methods:
- `logout() -> None`
- `thread_start(*, approval_mode=ApprovalMode.auto_review, base_instructions=None, config=None, cwd=None, developer_instructions=None, ephemeral=None, model=None, model_provider=None, personality=None, sandbox: Sandbox | None = None) -> Thread`
- `thread_list(*, archived=None, cursor=None, cwd=None, limit=None, model_providers=None, sort_key=None, source_kinds=None) -> ThreadListResponse`
- `thread_resume(thread_id: str, *, approval_mode=ApprovalMode.auto_review, base_instructions=None, config=None, cwd=None, developer_instructions=None, model=None, model_provider=None, personality=None, sandbox: Sandbox | None = None) -> Thread`
- `thread_fork(thread_id: str, *, approval_mode=ApprovalMode.auto_review, base_instructions=None, config=None, cwd=None, developer_instructions=None, model=None, model_provider=None, sandbox: Sandbox | None = None) -> Thread`
- `thread_resume(thread_id: str, *, approval_mode=None, base_instructions=None, config=None, cwd=None, developer_instructions=None, include_turns: bool | None = None, model=None, model_provider=None, personality=None, sandbox: Sandbox | None = None, service_tier=None) -> Thread`
- `thread_fork(thread_id: str, *, approval_mode=None, base_instructions=None, config=None, cwd=None, developer_instructions=None, ephemeral=None, include_turns: bool | None = None, model=None, model_provider=None, sandbox: Sandbox | None = None, service_tier=None) -> Thread`
- `thread_archive(thread_id: str) -> ThreadArchiveResponse`
- `thread_unarchive(thread_id: str) -> Thread`
- `models(*, include_hidden: bool = False) -> ModelListResponse`
@@ -80,6 +80,13 @@ with Codex() as codex:
...
```
`thread_resume(...)` and `thread_fork(...)` accept `include_turns` to control
whether the server loads turn history into its response. `False` skips that
work; `True` requests it. Omitting the option, or passing `None`, preserves the
server's default behavior. This does not remove history from the model's
context. Both methods return a thread handle; use `thread.read(include_turns=True)`
to retrieve its history.
## AsyncCodex (async parity)
```python
@@ -107,8 +114,8 @@ Properties/methods:
- `logout() -> Awaitable[None]`
- `thread_start(*, approval_mode=ApprovalMode.auto_review, base_instructions=None, config=None, cwd=None, developer_instructions=None, ephemeral=None, model=None, model_provider=None, personality=None, sandbox: Sandbox | None = None) -> Awaitable[AsyncThread]`
- `thread_list(*, archived=None, cursor=None, cwd=None, limit=None, model_providers=None, sort_key=None, source_kinds=None) -> Awaitable[ThreadListResponse]`
- `thread_resume(thread_id: str, *, approval_mode=ApprovalMode.auto_review, base_instructions=None, config=None, cwd=None, developer_instructions=None, model=None, model_provider=None, personality=None, sandbox: Sandbox | None = None) -> Awaitable[AsyncThread]`
- `thread_fork(thread_id: str, *, approval_mode=ApprovalMode.auto_review, base_instructions=None, config=None, cwd=None, developer_instructions=None, ephemeral=None, model=None, model_provider=None, sandbox: Sandbox | None = None) -> Awaitable[AsyncThread]`
- `thread_resume(thread_id: str, *, approval_mode=None, base_instructions=None, config=None, cwd=None, developer_instructions=None, include_turns: bool | None = None, model=None, model_provider=None, personality=None, sandbox: Sandbox | None = None, service_tier=None) -> Awaitable[AsyncThread]`
- `thread_fork(thread_id: str, *, approval_mode=None, base_instructions=None, config=None, cwd=None, developer_instructions=None, ephemeral=None, include_turns: bool | None = None, model=None, model_provider=None, sandbox: Sandbox | None = None, service_tier=None) -> Awaitable[AsyncThread]`
- `thread_archive(thread_id: str) -> Awaitable[ThreadArchiveResponse]`
- `thread_unarchive(thread_id: str) -> Awaitable[AsyncThread]`
- `models(*, include_hidden: bool = False) -> Awaitable[ModelListResponse]`
@@ -150,23 +157,23 @@ attempt. API-key login completes synchronously and does not return a handle.
### Thread
- `run(input: str | Input, *, approval_mode=None, cwd=None, effort=None, model=None, output_schema=None, personality=None, sandbox: Sandbox | None = None, service_tier=None, summary=None) -> TurnResult`
- `turn(input: str | Input, *, approval_mode=None, cwd=None, effort=None, model=None, output_schema=None, personality=None, sandbox: Sandbox | None = None, service_tier=None, summary=None) -> TurnHandle`
- `run(input: RunInput, *, approval_mode=None, cwd=None, effort=None, model=None, output_schema=None, personality=None, sandbox: Sandbox | None = None, service_tier=None, source=None, summary=None, turn_service_tier=None) -> TurnResult`
- `turn(input: RunInput, *, approval_mode=None, cwd=None, effort=None, model=None, output_schema=None, personality=None, sandbox: Sandbox | None = None, service_tier=None, source=None, summary=None, turn_service_tier=None) -> TurnHandle`
- `read(*, include_turns: bool = False) -> ThreadReadResponse`
- `set_name(name: str) -> ThreadSetNameResponse`
- `compact() -> ThreadCompactStartResponse`
### AsyncThread
- `run(input: str | Input, *, approval_mode=None, cwd=None, effort=None, model=None, output_schema=None, personality=None, sandbox: Sandbox | None = None, service_tier=None, summary=None) -> Awaitable[TurnResult]`
- `turn(input: str | Input, *, approval_mode=None, cwd=None, effort=None, model=None, output_schema=None, personality=None, sandbox: Sandbox | None = None, service_tier=None, summary=None) -> Awaitable[AsyncTurnHandle]`
- `run(input: RunInput, *, approval_mode=None, cwd=None, effort=None, model=None, output_schema=None, personality=None, sandbox: Sandbox | None = None, service_tier=None, source=None, summary=None, turn_service_tier=None) -> Awaitable[TurnResult]`
- `turn(input: RunInput, *, approval_mode=None, cwd=None, effort=None, model=None, output_schema=None, personality=None, sandbox: Sandbox | None = None, service_tier=None, source=None, summary=None, turn_service_tier=None) -> Awaitable[AsyncTurnHandle]`
- `read(*, include_turns: bool = False) -> Awaitable[ThreadReadResponse]`
- `set_name(name: str) -> Awaitable[ThreadSetNameResponse]`
- `compact() -> Awaitable[ThreadCompactStartResponse]`
`run(...)` is the common-case convenience path. It accepts plain strings, starts
the turn, consumes notifications until completion, and returns a small result
object with:
`run(...)` is the common-case convenience path. It accepts the same input and
options as `turn(...)`, consumes notifications until completion, and returns a
small result object with:
- `id: str`
- `status: TurnStatus`
@@ -184,6 +191,24 @@ phase-less assistant message item.
Use `turn(...)` when you need low-level turn control (`stream()`, `steer()`,
`interrupt()`) before collecting the turn result.
### Turn options
These options have the same behavior on sync and async `run(...)` and `turn(...)`:
| Option | Behavior |
| --- | --- |
| `service_tier: str | None = None` | Sets the thread's service tier for this and subsequent turns. |
| `turn_service_tier: str | None = None` | Overrides the tier for a newly started turn only. `None` inherits the thread setting; `"default"` selects standard speed. Does not change the thread default and is ignored when input joins an active turn. |
| `source: str | None = None` | Labels the caller that initiated a new turn, such as `"review_ui"`. This is metadata; it does not schedule work or grant authority. Ignored when input joins an active turn. |
`turn_service_tier`, `source`, and explicit `include_turns`
on resume/fork require Codex CLI 0.151.0 or newer. The SDK raises `CodexError`
before sending these options to an older runtime, which would otherwise ignore
them. Published SDK releases install a matching runtime automatically; when
using `CodexConfig.codex_bin`, choose a compatible executable. Unversioned local
builds are checked lazily against their experimental schema before these options
are sent. A custom `launch_args_override` must report a supported version.
## Sandbox
Use `sandbox=` consistently on thread lifecycle methods and turns: