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codex/codex-rs/app-server-protocol/schema/json/PermissionsRequestApprovalParams.json
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jif 5f4d06ef18 Encrypt multi-agent v2 message payloads (#26210) 
## Why

Multi-agent v2 currently routes agent instructions through normal tool
arguments and inter-agent context. That means the parent model can emit
plaintext task text, Codex can persist it in history/rollouts, and the
recipient can receive it as ordinary assistant-message JSON.

This changes the v2 path so agent instructions stay encrypted between
model calls: Responses encrypts the `message` argument returned by the
model, Codex forwards only that ciphertext, and Responses decrypts it
internally for the recipient model.

## What changed

- Mark the v2 `message` parameter as encrypted for `spawn_agent`,
`send_message`, and `followup_task`.
- Treat multi-agent v2 tool `message` values as ciphertext
unconditionally.
- Store v2 inter-agent task text in
`InterAgentCommunication.encrypted_content` with empty plaintext
`content`.
- Convert encrypted inter-agent communications into the Responses
`agent_message` input item before sending the child request.
- Preserve `agent_message` items across history, rollout, compaction,
telemetry, and app-server schema paths.
- Leave multi-agent v1 unchanged.

## Message shape

The model still calls the v2 tools with a `message` argument, but that
value is now ciphertext:

```json
{
  "name": "spawn_agent",
  "arguments": {
    "task_name": "worker",
    "message": "<ciphertext>"
  }
}
```

Codex stores the task as encrypted inter-agent communication:

```json
{
  "author": "/root",
  "recipient": "/root/worker",
  "content": "",
  "encrypted_content": "<ciphertext>",
  "trigger_turn": true
}
```

When Codex builds the recipient request, it forwards the ciphertext
using the new Responses input item:

```json
{
  "type": "agent_message",
  "author": "/root",
  "recipient": "/root/worker",
  "content": [
    {
      "type": "encrypted_content",
      "encrypted_content": "<ciphertext>"
    }
  ]
}
```

Responses decrypts that item internally for the recipient model.

## Context impact

- Parent context no longer carries plaintext v2 agent task instructions
from these tool arguments.
- Codex rollout/history stores ciphertext for v2 agent instructions.
- Recipient requests receive an `agent_message` item instead of
assistant commentary JSON for encrypted task delivery.
- Plaintext completion/status notifications are still plaintext because
they are Codex-generated status messages, not encrypted model tool
arguments.

## Validation

- `just test -p codex-tools`
- `just test -p codex-protocol`
- `just test -p codex-rollout`
- `just test -p codex-rollout-trace`
- `just test -p codex-otel`
- `just write-app-server-schema`
2026-06-05 10:25:57 +02:00

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{
"$schema": "http://json-schema.org/draft-07/schema#",
"definitions": {
"AbsolutePathBuf": {
"description": "A path that is guaranteed to be absolute and normalized (though it is not guaranteed to be canonicalized or exist on the filesystem).\n\nIMPORTANT: When deserializing an `AbsolutePathBuf`, a base path must be set using [AbsolutePathBufGuard::new]. If no base path is set, the deserialization will fail unless the path being deserialized is already absolute.",
"type": "string"
},
"AdditionalFileSystemPermissions": {
"properties": {
"entries": {
"items": {
"$ref": "#/definitions/FileSystemSandboxEntry"
},
"type": [
"array",
"null"
]
},
"globScanMaxDepth": {
"format": "uint",
"minimum": 1.0,
"type": [
"integer",
"null"
]
},
"read": {
"description": "This will be removed in favor of `entries`.",
"items": {
"$ref": "#/definitions/AbsolutePathBuf"
},
"type": [
"array",
"null"
]
},
"write": {
"description": "This will be removed in favor of `entries`.",
"items": {
"$ref": "#/definitions/AbsolutePathBuf"
},
"type": [
"array",
"null"
]
}
},
"type": "object"
},
"AdditionalNetworkPermissions": {
"properties": {
"enabled": {
"type": [
"boolean",
"null"
]
}
},
"type": "object"
},
"FileSystemAccessMode": {
"enum": [
"read",
"write",
"deny"
],
"type": "string"
},
"FileSystemPath": {
"oneOf": [
{
"properties": {
"path": {
"$ref": "#/definitions/AbsolutePathBuf"
},
"type": {
"enum": [
"path"
],
"title": "PathFileSystemPathType",
"type": "string"
}
},
"required": [
"path",
"type"
],
"title": "PathFileSystemPath",
"type": "object"
},
{
"properties": {
"pattern": {
"type": "string"
},
"type": {
"enum": [
"glob_pattern"
],
"title": "GlobPatternFileSystemPathType",
"type": "string"
}
},
"required": [
"pattern",
"type"
],
"title": "GlobPatternFileSystemPath",
"type": "object"
},
{
"properties": {
"type": {
"enum": [
"special"
],
"title": "SpecialFileSystemPathType",
"type": "string"
},
"value": {
"$ref": "#/definitions/FileSystemSpecialPath"
}
},
"required": [
"type",
"value"
],
"title": "SpecialFileSystemPath",
"type": "object"
}
]
},
"FileSystemSandboxEntry": {
"properties": {
"access": {
"$ref": "#/definitions/FileSystemAccessMode"
},
"path": {
"$ref": "#/definitions/FileSystemPath"
}
},
"required": [
"access",
"path"
],
"type": "object"
},
"FileSystemSpecialPath": {
"oneOf": [
{
"properties": {
"kind": {
"enum": [
"root"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "RootFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"minimal"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "MinimalFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"project_roots"
],
"type": "string"
},
"subpath": {
"type": [
"string",
"null"
]
}
},
"required": [
"kind"
],
"title": "KindFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"tmpdir"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "TmpdirFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"slash_tmp"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "SlashTmpFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"unknown"
],
"type": "string"
},
"path": {
"type": "string"
},
"subpath": {
"type": [
"string",
"null"
]
}
},
"required": [
"kind",
"path"
],
"type": "object"
}
]
},
"RequestPermissionProfile": {
"additionalProperties": false,
"properties": {
"fileSystem": {
"anyOf": [
{
"$ref": "#/definitions/AdditionalFileSystemPermissions"
},
{
"type": "null"
}
]
},
"network": {
"anyOf": [
{
"$ref": "#/definitions/AdditionalNetworkPermissions"
},
{
"type": "null"
}
]
}
},
"type": "object"
}
},
"properties": {
"cwd": {
"$ref": "#/definitions/AbsolutePathBuf"
},
"environmentId": {
"default": null,
"type": [
"string",
"null"
]
},
"itemId": {
"type": "string"
},
"permissions": {
"$ref": "#/definitions/RequestPermissionProfile"
},
"reason": {
"type": [
"string",
"null"
]
},
"startedAtMs": {
"description": "Unix timestamp (in milliseconds) when this approval request started.",
"format": "int64",
"type": "integer"
},
"threadId": {
"type": "string"
},
"turnId": {
"type": "string"
}
},
"required": [
"cwd",
"itemId",
"permissions",
"startedAtMs",
"threadId",
"turnId"
],
"title": "PermissionsRequestApprovalParams",
"type": "object"
}
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