git:20260803.d1f32b3 to git:20261101.d739dfc

24 added, 5 removed. Audit A to A.

---

name: unreal-pcg

- description: Refresh generated Unreal PCG output after changing source assets or graph settings.

+ description: Inspect PCG capabilities without mutations, or refresh generated Unreal PCG output after source changes.

license: MIT

- compatibility: Unreal Engine 5.8+, Python 3.9+

+ compatibility: Unreal Python host, Python 3.9+; individual PCG APIs and plugins are detected at runtime

allowed-tools: Bash Read Write

metadata:

dcc-mcp:

dcc: unreal

version: "0.1.0"

layer: domain

stage: scene

- search-hint: "unreal PCG refresh rebuild regenerate generated output"

- tags: "unreal, pcg, procedural, regenerate"

+ search-hint: "unreal PCG capabilities inspect graph grammar spline pathfinding refresh regenerate"

+ tags: "unreal, pcg, procedural, capabilities, regenerate"

tools: tools.yaml

---

# Unreal PCG

+ Start with `inspect_pcg_capabilities`. It observes fixed Python class/method

+ names, engine identity and current-process plugin metadata. It does not create

+ objects, load graphs, generate output, save assets, enable plugins or start a

+ service. Inspection does not require an open level.

+ `python_surface_status` describes only the listed names, not complete feature

+ support. Missing Python names may still have native or official MCP routes.

+ `execution_verified` remains false; no native authoring operation is tested by

+ this tool. Unknown plugin metadata stays unknown rather than being guessed from

+ the engine version. The reported documented versions are reference points, not

+ minimum-version gates.

+ Epic's optional MCP bridge is a separate UE 5.8+ route. Use its `status`,

+ `list_toolsets` and `describe_toolset` operations off the game thread before

+ calling an actual registered tool. Enabling PCGToolset requires explicit

+ `prepare_official_mcp(include_pcg_toolset=true)` intent; inspection never enables

+ it automatically. See [the versioned workflow](../../../../docs/pcg-capability-workflow.md).

Use `refresh_pcg` after replacing a mesh or material used by a PCG graph. It

operates on live `PCGComponent` instances in the current editor level and

- returns the number of components that were rebuilt.

+ returns the number of components for which a generation method was invoked.

+ This trigger result alone does not verify generation completion or saved output.