houdini-parameters

name	houdini-parameters
description	Authoring skill — inspect and edit Houdini node parameters, parameter templates, spare parameters, and channel expressions through typed atomic tools. Use instead of arbitrary Python for reading/setting parms, adding spare parms, and managing expressions. For node connections use houdini-node-graph.
license	MIT
compatibility	dcc-mcp-houdini 0.1+, Houdini 20.5+, dcc-mcp-core 0.17+
allowed-tools	Bash Read Write Edit
metadata	{"dcc-mcp":{"dcc":"houdini","layer":"domain","stage":"authoring","version":"1.0.0","tags":["houdini","parameters","parms","spare","expression","channel","authoring"],"search-hint":"list parameters, get parm, set parm, parm template, spare parameter, channel expression, reference","tools":"tools.yaml"}}

houdini-parameters

Typed parameter tools for agents. All tools are affinity: main because they call hou. Prefer these over houdini-scripting.execute_python for parameter and expression work.

Tool groups

• parm-query (read-only): list_parms, get_parms, get_parm_templates, get_expression.
• parm-edit (mutating): set_parms (type-aware coercion + per-parm validation), add_spare_parm, remove_spare_parm.
• parm-expression (mutating): set_expression, clear_expression.

Suggested flow

1. list_parms / get_parm_templates to discover names and types
2. set_parms for type-coerced edits (errors reported per parameter)
3. set_expression / clear_expression to drive or freeze a value