Michael Bolin f15df624a6 core: add configurable <context_window_guidance> message (#29936) ...

## Why

This PR adds a configurable `<context_window_guidance>` developer
section immediately after `<context_window>`. Harness integrations need
this section to give the model deployment-specific instructions for
preparing for context-window transitions.

## What changed

- Add an optional `features.token_budget.guidance_message` config with a
1,000-byte runtime cap and generated schema support.
- Render configured guidance as a developer `ContextualUserFragment`
wrapped in `<context_window_guidance>` immediately after
`<context_window>`.
- Omit the section when guidance is unset, empty, or whitespace-only.
- Preserve the resolved value in config locks and classify persisted
guidance as contextual developer content.
- Add integration coverage for rendered content and ordering.

f15df624a6 · 2026-06-24 18:03:44 -07:00

History

..

agent

[codex] Inject agent graph store into ThreadManager (#29736)

2026-06-24 13:24:10 -07:00

apps

[apps] Thread structured icon assets through app list (#29889)

2026-06-24 13:25:44 -07:00

bin

…

config

core: add configurable <context_window_guidance> message (#29936)

2026-06-24 18:03:44 -07:00

context

core: add configurable <context_window_guidance> message (#29936)

2026-06-24 18:03:44 -07:00

context_manager

core: use turn-owned world state for inline compaction (#29527)

2026-06-23 10:33:19 -07:00

guardian

feat(guardian): include connected account email in app reviews (#27045)

2026-06-23 20:33:44 +00:00

mcp_tool_call

Add MCP tool call error metrics (#28976)

2026-06-23 13:33:23 -07:00

plugins

[codex] Add created-by-me remote plugin marketplace (#28203)

2026-06-15 22:07:07 +00:00

sandboxing

Prepare managed network sandbox context (#29456)

2026-06-23 20:07:09 +01:00

session

core: add configurable <context_window_guidance> message (#29936)

2026-06-24 18:03:44 -07:00

state

core: reset context for token budget compaction (#29743)

2026-06-23 16:59:04 -07:00

tasks

core: reset context for token budget compaction (#29743)

2026-06-23 16:59:04 -07:00

tools

[codex] nest sleep config under current time reminder (#29910)

2026-06-24 17:49:00 -07:00

unified_exec

test: branch on target OS instead of runner flavor (#29712)

2026-06-23 14:27:13 -07:00

utils

…

agents_md_tests.rs

Pipeline bounded AGENTS.md and Git root probes (#29870)

2026-06-24 22:58:34 +01:00

agents_md.rs

Pipeline bounded AGENTS.md and Git root probes (#29870)

2026-06-24 22:58:34 +01:00

apply_patch_tests.rs

path-uri: clarify host-native path conversion (#29501)

2026-06-23 00:02:33 +00:00

apply_patch.rs

apply-patch: carry paths as PathUri (#28854)

2026-06-18 19:31:19 +00:00

attestation.rs

[codex] request desktop attestation from app (#20619)

2026-05-08 12:36:02 -07:00

client_common_tests.rs

[codex] Use input items for Responses Lite tools (#27946)

2026-06-22 23:56:16 -07:00

client_common.rs

[codex] Use input items for Responses Lite tools (#27946)

2026-06-22 23:56:16 -07:00

client_tests.rs

auth: move domain mode below app wire types (#29721)

2026-06-24 03:10:20 +00:00

client.rs

auth: move domain mode below app wire types (#29721)

2026-06-24 03:10:20 +00:00

codex_delegate_tests.rs

core: rename metadata -> internal_chat_message_metadata_passthrough (#28968)

2026-06-22 11:11:25 -07:00

codex_delegate.rs

Support thread-level originator overrides (#29477)

2026-06-23 17:23:38 -07:00

codex_thread.rs

Support thread-level originator overrides (#29477)

2026-06-23 17:23:38 -07:00

command_canonicalization_tests.rs

…

command_canonicalization.rs

…

compact_remote_v2.rs

core: use current step environments for tools (#29547)

2026-06-23 20:21:13 +00:00

compact_remote.rs

auth: move domain mode below app wire types (#29721)

2026-06-24 03:10:20 +00:00

compact_tests.rs

core: use turn-owned world state for inline compaction (#29527)

2026-06-23 10:33:19 -07:00

compact_token_budget.rs

core: reset context for token budget compaction (#29743)

2026-06-23 16:59:04 -07:00

compact.rs

[codex] rename rollout budget error to session budget error (#29744)

2026-06-23 16:49:13 -07:00

config_lock.rs

Use plugin-service MCP as the hosted plugin runtime (#27198)

2026-06-10 12:54:21 +02:00

connectors_tests.rs

[apps] Thread structured icon assets through app list (#29889)

2026-06-24 13:25:44 -07:00

connectors.rs

connectors: own app metadata types (#29723)

2026-06-23 22:08:23 -07:00

consequential_tool_message_templates.json

…

current_time.rs

current time reminders impl for system clock (varlatency 2/n) (#28824)

2026-06-18 19:18:42 +00:00

environment_selection.rs

core: add wait_for_environment for starting environments (#29745)

2026-06-24 00:35:34 +00:00

event_mapping_tests.rs

core: add configurable <context_window_guidance> message (#29936)

2026-06-24 18:03:44 -07:00

event_mapping.rs

core: add configurable <context_window_guidance> message (#29936)

2026-06-24 18:03:44 -07:00

exec_env_tests.rs

[codex] Move config loading into codex-config (#19487)

2026-04-26 15:10:53 -07:00

exec_env.rs

[codex] Move config loading into codex-config (#19487)

2026-04-26 15:10:53 -07:00

exec_policy_tests.rs

config: own layer provenance types (#29722)

2026-06-24 04:03:04 +00:00

exec_policy_windows_tests.rs

[codex] Respect Windows sandbox backend in exec policy (#26307)

2026-06-05 11:20:52 -07:00

exec_policy.rs

config: own layer provenance types (#29722)

2026-06-24 04:03:04 +00:00

exec_tests.rs

Add network environment ID plumbing (#28766)

2026-06-18 14:09:38 +02:00

exec.rs

Prepare managed network sandbox context (#29456)

2026-06-23 20:07:09 +01:00

function_tool.rs

feat: extract shared tool executor interface (#22359)

2026-05-13 11:31:27 +02:00

git_info_tests.rs

Pipeline bounded AGENTS.md and Git root probes (#29870)

2026-06-24 22:58:34 +01:00

hook_runtime.rs

Support thread-level originator overrides (#29477)

2026-06-23 17:23:38 -07:00

image_preparation_tests.rs

[codex] replace remote images with model-visible error text (#29417)

2026-06-22 16:41:00 -07:00

image_preparation.rs

[codex] Use input items for Responses Lite tools (#27946)

2026-06-22 23:56:16 -07:00

installation_id.rs

feat: split memories part 2 (#19860)

2026-04-28 13:03:28 +02:00

landlock.rs

linux-sandbox: switch helper plumbing to PermissionProfile (#20106)

2026-04-28 19:43:44 -07:00

lib.rs

[codex] Inject agent graph store into ThreadManager (#29736)

2026-06-24 13:24:10 -07:00

mcp_openai_file.rs

Centralize Codex Apps client handling (#29528)

2026-06-23 00:00:25 -07:00

mcp_skill_dependencies.rs

feat: use encrypted local secrets for MCP OAuth (#27541)

2026-06-12 22:03:51 +00:00

mcp_tool_approval_templates.rs

Uprev Rust toolchain pins to 1.95.0 (#24684)

2026-05-26 20:59:47 -07:00

mcp_tool_call_tests.rs

mcp: keep elicitation requests below app wire types (#29724)

2026-06-24 20:53:27 +00:00

mcp_tool_call.rs

mcp: keep elicitation requests below app wire types (#29724)

2026-06-24 20:53:27 +00:00

mcp_tool_exposure_test.rs

[apps] Thread structured icon assets through app list (#29889)

2026-06-24 13:25:44 -07:00

mcp_tool_exposure.rs

[codex] Use tool search for MCP tools by default (#29486)

2026-06-22 16:45:23 -07:00

mcp.rs

Add selected-plugin precedence and attribution to the MCP catalog (#27884)

2026-06-15 11:10:51 +02:00

memory_usage.rs

[codex] simplify memory read metrics (#28164)

2026-06-15 08:28:02 -07:00

mention_syntax.rs

…

network_policy_decision_tests.rs

…

network_policy_decision.rs

…

network_proxy_loader_tests.rs

config: own layer provenance types (#29722)

2026-06-24 04:03:04 +00:00

network_proxy_loader.rs

config: own layer provenance types (#29722)

2026-06-24 04:03:04 +00:00

original_image_detail.rs

Remove js_repl feature (#19410)

2026-04-24 17:49:29 -07:00

otel_init.rs

Add process-scoped SQLite telemetry (#22154)

2026-05-11 11:32:40 -07:00

personality_migration_tests.rs

core: persist initial context window metadata (#29519)

2026-06-23 21:50:50 +00:00

personality_migration.rs

feat(app-server): list descendant threads by ancestor (#29591)

2026-06-24 13:08:14 -07:00

prompt_debug.rs

[codex] Inject agent graph store into ThreadManager (#29736)

2026-06-24 13:24:10 -07:00

realtime_context_tests.rs

core: rename metadata -> internal_chat_message_metadata_passthrough (#28968)

2026-06-22 11:11:25 -07:00

realtime_context.rs

feat(app-server): list descendant threads by ancestor (#29591)

2026-06-24 13:08:14 -07:00

realtime_conversation_tests.rs

Support thread-level originator overrides (#29477)

2026-06-23 17:23:38 -07:00

realtime_conversation.rs

auth: move domain mode below app wire types (#29721)

2026-06-24 03:10:20 +00:00

realtime_prompt.rs

[codex] Consolidate shared prompts in codex-prompts (#25151)

2026-06-01 18:45:07 +00:00

responses_metadata.rs

fix(core): restore thread_source in x-codex-turn-metadata (#29455)

2026-06-22 09:05:27 -07:00

responses_retry.rs

centralize Responses retry policy (#24131)

2026-05-26 11:01:18 +02:00

review_format.rs

…

rollout_budget.rs

[codex] configure rollout budget reminder thresholds (#29423)

2026-06-22 13:25:48 -07:00

rollout.rs

app-server: remove experimental persist_extended_history bool flag (#25712)

2026-06-01 23:33:42 +00:00

safety_tests.rs

apply-patch: carry paths as PathUri (#28854)

2026-06-18 19:31:19 +00:00

safety.rs

chore(core) rm AskForApproval::OnFailure (#28418)

2026-06-23 12:13:54 -07:00

sandbox_tags_tests.rs

telemetry: tag sandboxes from permission profiles (#22791)

2026-05-15 10:58:50 -07:00

sandbox_tags.rs

telemetry: tag sandboxes from permission profiles (#22791)

2026-05-15 10:58:50 -07:00

session_prefix_tests.rs

core: surface terminal subagent errors to parent agents (#28375)

2026-06-16 14:34:54 +02:00

session_prefix.rs

core: surface terminal subagent errors to parent agents (#28375)

2026-06-16 14:34:54 +02:00

session_rollout_init_error.rs

…

session_startup_prewarm.rs

core: use current step environments for tools (#29547)

2026-06-23 20:21:13 +00:00

shell_snapshot_tests.rs

[codex] Bind shell snapshots to retained thread environments (#28421)

2026-06-15 20:10:53 -07:00

shell_snapshot.rs

app-server: preserve target-native environment cwd (#28146)

2026-06-16 21:42:28 +00:00

shell_tests.rs

[codex] simplify shell snapshot ownership (#27756)

2026-06-15 08:18:13 -07:00

shell.rs

[codex] simplify shell snapshot ownership (#27756)

2026-06-15 08:18:13 -07:00

skills.rs

Support thread-level originator overrides (#29477)

2026-06-23 17:23:38 -07:00

spawn.rs

core: stop threading SandboxPolicy through exec (#25700)

2026-06-03 10:41:41 -07:00

state_db_bridge.rs

state: pass state db handles through consumers (#20561)

2026-05-04 11:46:03 -07:00

stream_events_utils_tests.rs

core: use current step environments for tools (#29547)

2026-06-23 20:21:13 +00:00

stream_events_utils.rs

Let image generation extension hosts control output persistence (#29711)

2026-06-23 18:51:49 -07:00

test_support.rs

Support openai/form extended form elicitations (#27500)

2026-06-18 11:54:49 -07:00

thread_manager_tests.rs

[codex] Inject agent graph store into ThreadManager (#29736)

2026-06-24 13:24:10 -07:00

thread_manager.rs

[codex] Inject agent graph store into ThreadManager (#29736)

2026-06-24 13:24:10 -07:00

thread_rollout_truncation_tests.rs

Persist agent messages as response items (#29829)

2026-06-24 15:43:10 +01:00

thread_rollout_truncation.rs

Persist agent messages as response items (#29829)

2026-06-24 15:43:10 +01:00

turn_diff_tracker_tests.rs

path-uri: clarify host-native path conversion (#29501)

2026-06-23 00:02:33 +00:00

turn_diff_tracker.rs

core: cache turn diff rendering (#27489)

2026-06-10 17:17:44 -07:00

turn_metadata_tests.rs

fix(core): restore thread_source in x-codex-turn-metadata (#29455)

2026-06-22 09:05:27 -07:00

turn_metadata.rs

fix(core): restore thread_source in x-codex-turn-metadata (#29455)

2026-06-22 09:05:27 -07:00

turn_timing_tests.rs

core: rename metadata -> internal_chat_message_metadata_passthrough (#28968)

2026-06-22 11:11:25 -07:00

turn_timing.rs

[codex] Use input items for Responses Lite tools (#27946)

2026-06-22 23:56:16 -07:00

user_shell_command_tests.rs

Organize context fragments (#18794)

2026-04-20 22:39:17 -07:00

user_shell_command.rs

core: remove redundant TurnContext and Prompt fields (#28638)

2026-06-16 22:17:24 -07:00

util_tests.rs

Trim TUI legacy core helper usage (#22695)

2026-05-14 16:54:59 -07:00

util.rs

Trim TUI legacy core helper usage (#22695)

2026-05-14 16:54:59 -07:00

web_search.rs

…

windows_sandbox_read_grants_tests.rs

windows-sandbox: pass workspace roots to runner (#24108)

2026-05-28 15:26:55 -07:00

windows_sandbox_read_grants.rs

windows-sandbox: pass workspace roots to runner (#24108)

2026-05-28 15:26:55 -07:00

windows_sandbox_tests.rs

config: remove legacy profile v1 resolution (#24051)

2026-05-22 12:13:52 +02:00

windows_sandbox.rs

Add Windows sandbox provisioning setup command (#24831)

2026-05-29 11:01:44 -07:00