Files
codex/codex-rs/app-server-protocol/schema/json/v2/ThreadSettingsUpdatedNotification.json
T
Shijie Rao 7abfcf220b Expose thread-level multi-agent mode (#28792)
## Why

Once multi-agent mode can be selected per turn, clients also need to
choose the initial selection when creating a thread and observe that
selection through lifecycle and settings APIs.

The selected value is intentionally distinct from the effective
model-visible value: no client selection is represented as `null`, even
though an eligible multi-agent v2 turn derives `explicitRequestOnly` as
its effective default.

## What changed

- Add the optional experimental `thread/start.multiAgentMode` parameter
and pass it through thread creation.
- Preserve an omitted initial value as an unset selection rather than
eagerly storing `explicitRequestOnly`.
- Apply an explicit `thread/start` selection to the first turn through
the session configuration established at thread creation.
- Restore the latest persisted effective mode as the selected baseline
on cold resume when rollout history contains one.
- Inherit the optional selected mode from a loaded parent when creating
related runtime threads.
- Return the current selected `multiAgentMode` from `thread/start`,
`thread/resume`, `thread/fork`, and thread settings, using `null` when
no mode is selected.
- Keep lifecycle reporting independent from model capability and feature
eligibility; core turn construction remains responsible for calculating
and persisting the effective mode.

## Not covered

- Clearing an existing loaded-session selection back to unset through
`turn/start`; omitted or `null` currently retains the session's
selection.
- A TUI control, slash command, or `config.toml` preference.

## Verification

- `CARGO_INCREMENTAL=0 just test -p codex-app-server-protocol`
- `CARGO_INCREMENTAL=0 just test -p codex-app-server multi_agent_mode`

The focused app-server coverage verifies explicit `thread/start`
initialization, first-turn prompting, nullable reporting for an omitted
selection, and retention of selections that are not currently
runtime-eligible.

## Stack

Stacked on #28685. This PR contains only the thread initialization and
lifecycle/settings API layer.
2026-06-19 10:50:44 +02:00

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9.7 KiB
JSON
Generated

{
"$schema": "http://json-schema.org/draft-07/schema#",
"definitions": {
"AbsolutePathBuf": {
"description": "A path that is guaranteed to be absolute and normalized (though it is not guaranteed to be canonicalized or exist on the filesystem).\n\nIMPORTANT: When deserializing an `AbsolutePathBuf`, a base path must be set using [AbsolutePathBufGuard::new]. If no base path is set, the deserialization will fail unless the path being deserialized is already absolute.",
"type": "string"
},
"ActivePermissionProfile": {
"properties": {
"extends": {
"default": null,
"description": "Parent profile identifier from the selected permissions profile's `extends` setting, when present.",
"type": [
"string",
"null"
]
},
"id": {
"description": "Identifier from `default_permissions` or the implicit built-in default, such as `:workspace` or a user-defined `[permissions.<id>]` profile.",
"type": "string"
}
},
"required": [
"id"
],
"type": "object"
},
"ApprovalsReviewer": {
"description": "Configures who approval requests are routed to for review. Examples include sandbox escapes, blocked network access, MCP approval prompts, and ARC escalations. Defaults to `user`. `auto_review` uses a carefully prompted subagent to gather relevant context and apply a risk-based decision framework before approving or denying the request. The legacy value `guardian_subagent` is accepted for compatibility.",
"enum": [
"user",
"auto_review",
"guardian_subagent"
],
"type": "string"
},
"AskForApproval": {
"oneOf": [
{
"enum": [
"untrusted",
"on-failure",
"on-request",
"never"
],
"type": "string"
},
{
"additionalProperties": false,
"properties": {
"granular": {
"properties": {
"mcp_elicitations": {
"type": "boolean"
},
"request_permissions": {
"default": false,
"type": "boolean"
},
"rules": {
"type": "boolean"
},
"sandbox_approval": {
"type": "boolean"
},
"skill_approval": {
"default": false,
"type": "boolean"
}
},
"required": [
"mcp_elicitations",
"rules",
"sandbox_approval"
],
"type": "object"
}
},
"required": [
"granular"
],
"title": "GranularAskForApproval",
"type": "object"
}
]
},
"CollaborationMode": {
"description": "Collaboration mode for a Codex session.",
"properties": {
"mode": {
"$ref": "#/definitions/ModeKind"
},
"settings": {
"$ref": "#/definitions/Settings"
}
},
"required": [
"mode",
"settings"
],
"type": "object"
},
"ModeKind": {
"description": "Initial collaboration mode to use when the TUI starts.",
"enum": [
"plan",
"default"
],
"type": "string"
},
"MultiAgentMode": {
"description": "Controls whether the model should only spawn sub-agents after an explicit user request or may delegate proactively when doing so would help.",
"enum": [
"explicitRequestOnly",
"proactive"
],
"type": "string"
},
"NetworkAccess": {
"enum": [
"restricted",
"enabled"
],
"type": "string"
},
"Personality": {
"enum": [
"none",
"friendly",
"pragmatic"
],
"type": "string"
},
"ReasoningEffort": {
"description": "A non-empty reasoning effort value advertised by the model.",
"minLength": 1,
"type": "string"
},
"ReasoningSummary": {
"description": "A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. See https://platform.openai.com/docs/guides/reasoning?api-mode=responses#reasoning-summaries",
"oneOf": [
{
"enum": [
"auto",
"concise",
"detailed"
],
"type": "string"
},
{
"description": "Option to disable reasoning summaries.",
"enum": [
"none"
],
"type": "string"
}
]
},
"SandboxPolicy": {
"oneOf": [
{
"properties": {
"type": {
"enum": [
"dangerFullAccess"
],
"title": "DangerFullAccessSandboxPolicyType",
"type": "string"
}
},
"required": [
"type"
],
"title": "DangerFullAccessSandboxPolicy",
"type": "object"
},
{
"properties": {
"networkAccess": {
"default": false,
"type": "boolean"
},
"type": {
"enum": [
"readOnly"
],
"title": "ReadOnlySandboxPolicyType",
"type": "string"
}
},
"required": [
"type"
],
"title": "ReadOnlySandboxPolicy",
"type": "object"
},
{
"properties": {
"networkAccess": {
"allOf": [
{
"$ref": "#/definitions/NetworkAccess"
}
],
"default": "restricted"
},
"type": {
"enum": [
"externalSandbox"
],
"title": "ExternalSandboxSandboxPolicyType",
"type": "string"
}
},
"required": [
"type"
],
"title": "ExternalSandboxSandboxPolicy",
"type": "object"
},
{
"properties": {
"excludeSlashTmp": {
"default": false,
"type": "boolean"
},
"excludeTmpdirEnvVar": {
"default": false,
"type": "boolean"
},
"networkAccess": {
"default": false,
"type": "boolean"
},
"type": {
"enum": [
"workspaceWrite"
],
"title": "WorkspaceWriteSandboxPolicyType",
"type": "string"
},
"writableRoots": {
"default": [],
"items": {
"$ref": "#/definitions/AbsolutePathBuf"
},
"type": "array"
}
},
"required": [
"type"
],
"title": "WorkspaceWriteSandboxPolicy",
"type": "object"
}
]
},
"Settings": {
"description": "Settings for a collaboration mode.",
"properties": {
"developer_instructions": {
"type": [
"string",
"null"
]
},
"model": {
"type": "string"
},
"reasoning_effort": {
"anyOf": [
{
"$ref": "#/definitions/ReasoningEffort"
},
{
"type": "null"
}
]
}
},
"required": [
"model"
],
"type": "object"
},
"ThreadSettings": {
"properties": {
"activePermissionProfile": {
"anyOf": [
{
"$ref": "#/definitions/ActivePermissionProfile"
},
{
"type": "null"
}
]
},
"approvalPolicy": {
"$ref": "#/definitions/AskForApproval"
},
"approvalsReviewer": {
"$ref": "#/definitions/ApprovalsReviewer"
},
"collaborationMode": {
"$ref": "#/definitions/CollaborationMode"
},
"cwd": {
"$ref": "#/definitions/AbsolutePathBuf"
},
"effort": {
"anyOf": [
{
"$ref": "#/definitions/ReasoningEffort"
},
{
"type": "null"
}
]
},
"model": {
"type": "string"
},
"modelProvider": {
"type": "string"
},
"personality": {
"anyOf": [
{
"$ref": "#/definitions/Personality"
},
{
"type": "null"
}
]
},
"sandboxPolicy": {
"$ref": "#/definitions/SandboxPolicy"
},
"serviceTier": {
"type": [
"string",
"null"
]
},
"summary": {
"anyOf": [
{
"$ref": "#/definitions/ReasoningSummary"
},
{
"type": "null"
}
]
}
},
"required": [
"approvalPolicy",
"approvalsReviewer",
"collaborationMode",
"cwd",
"model",
"modelProvider",
"sandboxPolicy"
],
"type": "object"
}
},
"properties": {
"threadId": {
"type": "string"
},
"threadSettings": {
"$ref": "#/definitions/ThreadSettings"
}
},
"required": [
"threadId",
"threadSettings"
],
"title": "ThreadSettingsUpdatedNotification",
"type": "object"
}