unity-package

name	unity-package
description	Manage Unity Package Manager (UPM) — install, remove, refresh, search, inspect, and list packages. Use when adding or removing UPM packages, checking installed versions, searching the registry, or scripting package operations, even if the user just says "装个包" or "UPM". 管理 Unity Package Manager(UPM:安装、移除、刷新、搜索、查看、列出包);当用户要添加或移除 UPM 包、检查已装版本、搜索 registry、或脚本化包操作时使用。

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.