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# What <img width="1792" height="1024" alt="image" src="https://github.com/user-attachments/assets/8f81d232-5813-4994-a61d-e42a05a93a3e" /> `SubagentStop` runs when a thread-spawned subagent turn is about to finish. Thread-spawned subagents use `SubagentStop` instead of the normal root-agent `Stop` hook. Configured handlers match on `agent_type`. Hook input includes the normal stop fields plus: - `agent_id`: the child thread id. - `agent_type`: the resolved subagent type. - `agent_transcript_path`: the child subagent transcript path. - `transcript_path`: the parent thread transcript path. - `last_assistant_message`: the final assistant message from the child turn, when available. - `stop_hook_active`: `true` when the child is already continuing because an earlier stop-like hook blocked completion. `SubagentStop` shares the same completion-control semantics as `Stop`, scoped to the child turn: - No decision allows the child turn to finish. - `decision: "block"` with a non-empty `reason` records that reason as hook feedback and continues the child with that prompt. - `continue: false` stops the child turn. If `stopReason` is present, Codex surfaces it as the stop reason. # Lifecycle Scope Only thread-spawned subagents run `SubagentStop`. Internal/system subagents such as Review, Compact, MemoryConsolidation, and Other do not run normal `Stop` hooks and do not run `SubagentStop`. This avoids exposing synthetic matcher labels for internal implementation paths. # Stack 1. #22782: add `SubagentStart`. 2. This PR: add `SubagentStop`. 3. #22882: add subagent identity to normal hook inputs.
490 lines
11 KiB
JSON
Generated
490 lines
11 KiB
JSON
Generated
{
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"$schema": "http://json-schema.org/draft-07/schema#",
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"definitions": {
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"ApprovalsReviewer": {
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"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.",
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"enum": [
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"user",
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"auto_review",
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"guardian_subagent"
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],
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"type": "string"
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},
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"AskForApproval": {
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"oneOf": [
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{
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"enum": [
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"untrusted",
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"on-failure",
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"on-request",
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"never"
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],
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"type": "string"
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},
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{
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"additionalProperties": false,
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"properties": {
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"granular": {
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"properties": {
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"mcp_elicitations": {
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"type": "boolean"
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},
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"request_permissions": {
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"default": false,
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"type": "boolean"
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},
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"rules": {
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"type": "boolean"
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},
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"sandbox_approval": {
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"type": "boolean"
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},
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"skill_approval": {
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"default": false,
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"type": "boolean"
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}
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},
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"required": [
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"mcp_elicitations",
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"rules",
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"sandbox_approval"
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],
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"type": "object"
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}
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},
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"required": [
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"granular"
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],
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"title": "GranularAskForApproval",
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"type": "object"
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}
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]
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},
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"ComputerUseRequirements": {
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"properties": {
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"allowLockedComputerUse": {
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"type": [
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"boolean",
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"null"
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]
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}
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},
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"type": "object"
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},
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"ConfigRequirements": {
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"properties": {
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"allowManagedHooksOnly": {
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"type": [
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"boolean",
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"null"
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]
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},
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"allowedApprovalPolicies": {
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"items": {
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"$ref": "#/definitions/AskForApproval"
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},
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"type": [
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"array",
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"null"
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]
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},
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"allowedSandboxModes": {
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"items": {
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"$ref": "#/definitions/SandboxMode"
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},
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"type": [
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"array",
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"null"
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]
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},
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"allowedWebSearchModes": {
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"items": {
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"$ref": "#/definitions/WebSearchMode"
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},
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"type": [
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"array",
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"null"
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]
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},
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"computerUse": {
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"anyOf": [
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{
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"$ref": "#/definitions/ComputerUseRequirements"
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},
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{
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"type": "null"
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}
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]
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},
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"enforceResidency": {
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"anyOf": [
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{
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"$ref": "#/definitions/ResidencyRequirement"
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},
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{
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"type": "null"
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}
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]
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},
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"featureRequirements": {
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"additionalProperties": {
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"type": "boolean"
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},
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"type": [
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"object",
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"null"
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]
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}
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},
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"type": "object"
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},
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"ConfiguredHookHandler": {
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"oneOf": [
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{
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"properties": {
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"async": {
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"type": "boolean"
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},
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"command": {
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"type": "string"
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},
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"commandWindows": {
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"type": [
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"string",
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"null"
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]
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},
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"statusMessage": {
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"type": [
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"string",
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"null"
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]
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},
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"timeoutSec": {
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"format": "uint64",
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"minimum": 0.0,
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"type": [
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"integer",
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"null"
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]
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},
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"type": {
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"enum": [
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"command"
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],
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"title": "CommandConfiguredHookHandlerType",
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"type": "string"
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}
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},
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"required": [
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"async",
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"command",
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"type"
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],
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"title": "CommandConfiguredHookHandler",
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"type": "object"
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},
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{
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"properties": {
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"type": {
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"enum": [
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"prompt"
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],
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"title": "PromptConfiguredHookHandlerType",
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"type": "string"
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}
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},
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"required": [
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"type"
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],
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"title": "PromptConfiguredHookHandler",
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"type": "object"
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},
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{
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"properties": {
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"type": {
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"enum": [
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"agent"
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],
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"title": "AgentConfiguredHookHandlerType",
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"type": "string"
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}
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},
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"required": [
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"type"
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],
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"title": "AgentConfiguredHookHandler",
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"type": "object"
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}
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]
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},
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"ConfiguredHookMatcherGroup": {
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"properties": {
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"hooks": {
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"items": {
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"$ref": "#/definitions/ConfiguredHookHandler"
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},
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"type": "array"
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},
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"matcher": {
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"type": [
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"string",
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"null"
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]
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}
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},
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"required": [
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"hooks"
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],
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"type": "object"
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},
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"ManagedHooksRequirements": {
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"properties": {
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"PermissionRequest": {
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"items": {
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"$ref": "#/definitions/ConfiguredHookMatcherGroup"
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},
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"type": "array"
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},
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"PostCompact": {
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"items": {
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"$ref": "#/definitions/ConfiguredHookMatcherGroup"
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},
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"type": "array"
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},
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"PostToolUse": {
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"items": {
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"$ref": "#/definitions/ConfiguredHookMatcherGroup"
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},
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"type": "array"
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},
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"PreCompact": {
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"items": {
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"$ref": "#/definitions/ConfiguredHookMatcherGroup"
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},
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"type": "array"
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},
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"PreToolUse": {
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"items": {
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"$ref": "#/definitions/ConfiguredHookMatcherGroup"
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},
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"type": "array"
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},
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"SessionStart": {
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"items": {
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"$ref": "#/definitions/ConfiguredHookMatcherGroup"
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},
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"type": "array"
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},
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"Stop": {
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"items": {
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"$ref": "#/definitions/ConfiguredHookMatcherGroup"
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},
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"type": "array"
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},
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"SubagentStart": {
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"items": {
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"$ref": "#/definitions/ConfiguredHookMatcherGroup"
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},
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"type": "array"
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},
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"SubagentStop": {
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"items": {
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"$ref": "#/definitions/ConfiguredHookMatcherGroup"
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},
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"type": "array"
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},
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"UserPromptSubmit": {
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"items": {
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"$ref": "#/definitions/ConfiguredHookMatcherGroup"
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},
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"type": "array"
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},
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"managedDir": {
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"type": [
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"string",
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"null"
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]
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},
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"windowsManagedDir": {
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"type": [
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"string",
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"null"
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]
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}
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},
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"required": [
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"PermissionRequest",
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"PostCompact",
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"PostToolUse",
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"PreCompact",
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"PreToolUse",
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"SessionStart",
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"Stop",
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"SubagentStart",
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"SubagentStop",
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"UserPromptSubmit"
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],
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"type": "object"
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},
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"NetworkDomainPermission": {
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"enum": [
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"allow",
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"deny"
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],
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"type": "string"
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},
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"NetworkRequirements": {
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"properties": {
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"allowLocalBinding": {
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"type": [
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"boolean",
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"null"
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]
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},
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"allowUnixSockets": {
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"description": "Legacy compatibility view derived from `unix_sockets`.",
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"items": {
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"type": "string"
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},
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"type": [
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"array",
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"null"
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]
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},
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"allowUpstreamProxy": {
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"type": [
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"boolean",
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"null"
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]
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},
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"allowedDomains": {
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"description": "Legacy compatibility view derived from `domains`.",
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"items": {
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"type": "string"
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},
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"type": [
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"array",
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"null"
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]
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},
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"dangerouslyAllowAllUnixSockets": {
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"type": [
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"boolean",
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"null"
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]
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},
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"dangerouslyAllowNonLoopbackProxy": {
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"type": [
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"boolean",
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"null"
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]
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},
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"deniedDomains": {
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"description": "Legacy compatibility view derived from `domains`.",
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"items": {
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"type": "string"
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},
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"type": [
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"array",
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"null"
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]
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},
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"domains": {
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"additionalProperties": {
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"$ref": "#/definitions/NetworkDomainPermission"
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},
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"description": "Canonical network permission map for `experimental_network`.",
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"type": [
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"object",
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"null"
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]
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},
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"enabled": {
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"type": [
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"boolean",
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"null"
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]
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},
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"httpPort": {
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"format": "uint16",
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"minimum": 0.0,
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"type": [
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"integer",
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"null"
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]
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},
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"managedAllowedDomainsOnly": {
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"description": "When true, only managed allowlist entries are respected while managed network enforcement is active.",
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"type": [
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"boolean",
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"null"
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]
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},
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"socksPort": {
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"format": "uint16",
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"minimum": 0.0,
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"type": [
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"integer",
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"null"
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]
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},
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"unixSockets": {
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"additionalProperties": {
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"$ref": "#/definitions/NetworkUnixSocketPermission"
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},
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"description": "Canonical unix socket permission map for `experimental_network`.",
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"type": [
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"object",
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"null"
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]
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}
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},
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"type": "object"
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},
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"NetworkUnixSocketPermission": {
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"enum": [
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"allow",
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"none"
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],
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"type": "string"
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},
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"ResidencyRequirement": {
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"enum": [
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"us"
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],
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"type": "string"
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},
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"SandboxMode": {
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"enum": [
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"read-only",
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"workspace-write",
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"danger-full-access"
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],
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"type": "string"
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},
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"WebSearchMode": {
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"enum": [
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"disabled",
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"cached",
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"live"
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],
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"type": "string"
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}
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},
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"properties": {
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"requirements": {
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"anyOf": [
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{
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"$ref": "#/definitions/ConfigRequirements"
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},
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{
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"type": "null"
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}
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],
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"description": "Null if no requirements are configured (e.g. no requirements.toml/MDM entries)."
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}
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},
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"title": "ConfigRequirementsReadResponse",
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"type": "object"
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} |