/package

name: unity-package
description: Manage Unity Package Manager (UPM) packages. 管理 Unity Package Manager(UPM)包。

Triggers

• Adding or removing UPM packages
• Checking installed versions
• Searching the registry
• Scripting package operations
• 添加或移除 UPM 包、检查已装版本、搜索 registry、脚本化包操作

Package Skills

Manage installed Unity packages and package-related helper flows such as Cinemachine and Splines setup.

Guardrails

**Operating Mode** (v1.9 three-tier):

• **Approval** (default): query skills (`package_list`, `package_check`, `package_search`, `package_get_dependencies`, `package_get_versions`, `package_get_cinemachine_status`) run directly. Mutators (`package_install`, `package_remove`, `package_install_cinemachine`, `package_install_splines`, `package_refresh`) are FullAuto — on `MODE_RESTRICTED`, run the grant protocol.
• **Auto** / **Bypass**: SemiAuto and FullAuto run directly.
• Auto-forbidden in this module: `package_install` and `package_remove` (`MayTriggerReload = true`, `RiskLevel = "high"`; `package_remove` also carries `SkillOperation.Delete`). They are reachable only under Bypass mode or via a user-managed Allowlist entry; the grant flow returns `MODE_FORBIDDEN`.
• Install/remove/refresh jobs return immediately with a `jobId`; the actual package import + Domain Reload happens asynchronously and may make the REST server transiently unavailable. Poll with `job_status` / `job_wait`.

**DO NOT** (common hallucinations):

• `package_add` / `package_update` do not exist -> use `package_install`
• `package_get_info` does not exist -> use `package_list`, `package_check`, `package_get_dependencies`, or `package_get_versions`
• `package_search` searches the installed package cache only; it does not query the Unity Registry
• Package query skills initialize their cache automatically after Domain Reload. During the short cold-start window they return `{ success: false, status: "refreshing", cacheReady: false, retryStrategy: "wait_and_retry", retryAfterSeconds: 2 }`; retry instead of treating this as `installed=false`.
• Package install/remove/refresh jobs can trigger package import and Domain Reload; expect transient server unavailability and use returned job IDs

**Routing**:

• For Cinemachine quick setup -> use `package_install_cinemachine`
• For Splines quick setup -> use `package_install_splines`
• For project manifest inspection -> use `project_get_packages`
• For define symbol changes after package installation -> use `debug_set_defines`

Skills

`package_list`

List all installed packages currently cached by UnitySkills. **Parameters:** None.

**Returns:** `{ success, count, packages }`

`package_check`

Check whether a package is installed.

| Parameter | Type | Required | Default | Description | |-----------|------|----------|---------|-------------| | `packageId` | string | Yes | - | Package ID such as `com.unity.cinemachine` |

**Returns:** `{ packageId, installed, version }`

`package_install`

Install a package. Returns an async job when the request is accepted.

| Parameter | Type | Required | Default | Description | |-----------|------|----------|---------|-------------| | `packageId` | string | Yes | - | Package ID to install | | `version` | string | No | null | Optional explicit version |

**Returns:** `{ success, status, jobId, message, serverAvailability }`

`package_remove`

Remove an installed package. Returns an async job when the request is accepted.

| Parameter | Type | Required | Default | Description | |-----------|------|----------|---------|-------------| | `packageId` | string | Yes | - | Installed package ID to remove |

**Returns:** `{ success, status, jobId, message, serverAvailability }`

`package_refresh`

Refresh the installed package cache used by query skills. **Parameters:** None.

**Returns:** `{ success, status, jobId, message }`

`package_install_cinemachine`

Install Cinemachine using the supported package/version strategy.

| Parameter | Type | Required | Default | Description | |-----------|------|----------|---------|-------------| | `version` | int | No | 3 | `2` for CM2, `3` for CM3 |

**Notes:**

• CM3 auto-installs the Splines dependency.
• If the requested line is already installed, this skill can return immediate success instead of a job.

**Returns:** `{ success, status?, jobId?, message, serverAvailability? }`

`package_install_splines`

Install or upgrade Unity Splines using the recommended version for the current Unity editor line. **Parameters:** None.

**Returns:** `{ success, status?, jobId?, message, serverAvailability? }`

`package_get_cinemachine_status`

Get current Cinemachine and Splines installation status. **Parameters:** None.

**Returns:** `{ cinemachine, splines }`

`package_search`

Search the installed package cache by package name or display name.

| Parameter | Type | Required | Default | Description | |-----------|------|----------|---------|-------------| | `query` | string | Yes | - | Search keyword |

**Returns:** `{ success, query, count, packages }`

`package_get_dependencies`

Get dependency information for one installed package.

| Parameter | Type | Required | Default | Description | |-----------|------|----------|---------|-------------| | `packageId` | string | Yes | - | Installed package ID |

**Returns:** `{ success, packageId, version, dependencyCount, dependencies }`

`package_get_versions`

Get available versions for one installed package.

| Parameter | Type | Required | Default | Description | |-----------|------|----------|---------|-------------| | `packageId` | string | Yes | - | Installed package ID |

**Returns:** `{ success, packageId, currentVersion, compatibleVersion, latestVersion, allVersions }`

Exact Signatures

Exact names, parameters, defaults, and returns are defined by `GET /skills/schema` or `unity_skills.get_skill_schema()`, not by this file.