pakrym-oai dac5f07403 [codex] Add context remaining tool (#27518) ...

## Why

The token budget feature can inject remaining-context notices into
model-visible context, but the model does not have a direct way to ask
for that same remaining-token fragment on demand.

This PR adds a small model tool for the token budget feature so the
model can request the current remaining context window message without
duplicating the fragment format.

## What changed

- Adds a `get_context_remaining` direct-model tool behind
`Feature::TokenBudget`.
- Renders the tool output through `TokenBudgetRemainingContext`,
matching the existing budget message shape.
- Registers the tool alongside `new_context` in the token budget tool
set.
- Adds integration coverage that verifies the tool is exposed and
returns the same `<token_budget>` remaining fragment already present in
context.

## Validation

- `just test -p codex-core token_budget`

dac5f07403 · 2026-06-11 04:17:10 +00:00

History

..

common

Pair thread environment settings (#26687)

2026-06-08 13:55:15 -07:00

suite

[codex] Add context remaining tool (#27518)

2026-06-11 04:17:10 +00:00

all.rs

remove temporary ownership re-exports (#16626)

2026-04-03 00:33:34 -07:00

responses_headers.rs

[codex] Store compact window id in rollout (#27264)

2026-06-10 08:47:16 -07:00