Files
codex/codex-rs/app-server-protocol/schema/json/v2/ThreadSettingsUpdatedNotification.json
Eric Traut 771a4e74ac Add thread/settings/update app-server API (#23502)
## Why

App-server clients need a way to update a thread's next-turn settings
without starting a turn, adding transcript content, or waiting for turn
lifecycle events. This gives settings UI a direct path for durable
thread settings while clients observe the eventual effective state
through a notification.

This is a simplified rework of PR
https://github.com/openai/codex/pull/22509. In particular, it changes
the `thread/settings/update` api to return immediately rather than
waiting and returning the effective (updated) thread settings. This
makes the new api consistent with `turn/start` and greatly reduces the
complexity of the implementation relative to the earlier attempt.

## What Changed

- Adds experimental `thread/settings/update` with partial-update request
fields and an empty acknowledgment response.
- Adds experimental `thread/settings/updated`, carrying full effective
`ThreadSettings` and scoped by `threadId` to subscribed clients for the
affected thread.
- Shares durable settings validation with `turn/start`, including
`sandboxPolicy` plus `permissions` rejection and `serviceTier: null`
clearing.
- Emits the same settings notification when `turn/start` overrides
change the stored effective thread settings.
- Regenerates app-server protocol schema fixtures and updates
`app-server/README.md`.
2026-05-20 11:03:20 -07:00

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JSON
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{
"$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 once permissions profiles support inheritance. This is currently always `null`.",
"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": {
"$ref": "#/definitions/Settings"
}
},
"required": [
"mode",
"settings"
],
"type": "object"
},
"ModeKind": {
"description": "Initial collaboration mode to use when the TUI starts.",
"enum": [
"plan",
"default"
],
"type": "string"
},
"NetworkAccess": {
"enum": [
"restricted",
"enabled"
],
"type": "string"
},
"Personality": {
"enum": [
"none",
"friendly",
"pragmatic"
],
"type": "string"
},
"ReasoningEffort": {
"description": "See https://platform.openai.com/docs/guides/reasoning?api-mode=responses#get-started-with-reasoning",
"enum": [
"none",
"minimal",
"low",
"medium",
"high",
"xhigh"
],
"type": "string"
},
"ReasoningSummary": {
"description": "A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. See https://platform.openai.com/docs/guides/reasoning?api-mode=responses#reasoning-summaries",
"oneOf": [
{
"enum": [
"auto",
"concise",
"detailed"
],
"type": "string"
},
{
"description": "Option to disable reasoning summaries.",
"enum": [
"none"
],
"type": "string"
}
]
},
"SandboxPolicy": {
"oneOf": [
{
"properties": {
"type": {
"enum": [
"dangerFullAccess"
],
"title": "DangerFullAccessSandboxPolicyType",
"type": "string"
}
},
"required": [
"type"
],
"title": "DangerFullAccessSandboxPolicy",
"type": "object"
},
{
"properties": {
"networkAccess": {
"default": false,
"type": "boolean"
},
"type": {
"enum": [
"readOnly"
],
"title": "ReadOnlySandboxPolicyType",
"type": "string"
}
},
"required": [
"type"
],
"title": "ReadOnlySandboxPolicy",
"type": "object"
},
{
"properties": {
"networkAccess": {
"allOf": [
{
"$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"
}