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tylerart3d

MoonRay MCP

by tylerart3d
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Python
Local

Server Configuration

Describes the environment variables required to run the server.

NameRequiredDescriptionDefault
MOONRAY_MCP_RUNTIMENoThe absolute path to the staged MoonRay Houdini runtime.~/.local/share/moonray-mcp/runtime
MOONRAY_MCP_USD_TO_RDLNoOptional path to the USD-to-RDL translator executable, overriding the default.
MOONRAY_MCP_NATIVE_HOSTNoOptional path to a controllable hd_render build; otherwise the server looks for bin/hd_render inside the staged runtime.
MOONRAY_MCP_OUTPUT_ROOTNoThe absolute path to the directory where render jobs and reports are stored.~/.local/share/moonray-mcp/jobs
MOONRAY_MCP_SETUP_SCRIPTNoOptional path to the runtime setup script, overriding the expected default.
MOONRAY_ZELTNER_FIXTURE_ROOTNoPath to external image set used by the Zeltner regression example.
MOONRAY_MCP_INTERACTIVE_VIEWERNoOptional path to the standalone viewer executable, overriding the default.

Instructions

Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.

This server publishes no instructions, or was last inspected before Glama recorded them.

Capabilities

Features and capabilities supported by this server

Protocol revision2025-11-25

CapabilityDetails
tools
{
  "listChanged": false
}
prompts
{
  "listChanged": false
}
resources
{
  "subscribe": false,
  "listChanged": false
}
experimental
{}

Tools

Functions exposed to the LLM to take actions

NameDescription
moonray_healthC

Check the staged runtime, required tools, and MoonRay Hydra delegate.

moonray_capabilitiesB

Describe the scene types, backend, reports, and controls in this build.

moonray_resourcesA

Check memory, disk, CPU load, and conflicting renders before launch.

launch_interactive_viewerC

Open a scene in MoonRay's visible standalone interactive viewer.

interactive_viewer_statusB

Report whether a standalone MoonRay viewer window is still active.

switch_interactive_viewer_aovA

Switch a live standalone viewer to beauty, albedo, normal, depth, or wireframe.

set_interactive_viewer_exposureA

Set the live standalone viewer display exposure from -20 to 20 stops.

set_interactive_viewer_denoisingA

Turn live standalone viewer denoising explicitly on or off.

capture_interactive_viewer_snapshotB

Save the viewer as a raw EXR and a display-referred PNG.

interactive_viewer_previewC

Return the visible standalone viewer image directly to the MCP client.

stop_interactive_viewerA

Close a standalone MoonRay viewer owned by this MCP process.

validate_sceneB

Preflight a USD or RDL scene before committing to a render.

inspect_sceneB

Summarize a USD stage and recommend an authored camera for rendering.

inspect_materialsC

Inspect source materials, textures, and a job's translated MoonRay RDL.

start_renderC

Start an asynchronous MoonRay render and immediately return its job ID.

render_statusB

Return the current phase, elapsed time, diagnostics, and output paths.

cancel_renderA

Cancel a queued or active render without leaving an orphan process.

pause_renderC

Pause an active native-host render through MoonRay's Hydra delegate.

resume_renderC

Resume an active native-host render through MoonRay's Hydra delegate.

resume_from_checkpointC

Start a new native render job from a completed checkpoint EXR.

capture_render_snapshotB

Request a current-frame EXR and PNG preview from a native-host render.

render_previewA

Return the newest live snapshot, or the final preview after completion.

render_resultC

Return a completed job report and its PNG preview when available.

compare_rendersB

Compare two completed job IDs or image paths and return a difference image.

run_comparison_manifestB

Run a saved image-comparison manifest and preserve aggregate results.

Prompts

Interactive templates invoked by user choice

NameDescription

No prompts

Resources

Contextual data attached and managed by the client

NameDescription

No resources

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