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get_template_schema

Retrieve overridable runtime parameters (slots) of a workflow template to configure before execution. Returns slot keys, types, current values, and constraints for direct use in template overrides.

Instructions

Get a template's OVERRIDABLE run-time parameters (its 'slots') before running it. Pass a bundled pack name (from list_packs) or an official ComfyUI workflow template name (from list_workflow_templates). Returns slots — the meaningful knobs: positive/negative prompt, seed, steps, cfg, sampler/scheduler, width/height, checkpoint/LoRA/model files, denoise, batch_size, input image — plus other_slots (every remaining overridable widget), each with a stable key "<nodeId>.<widget_name>", semantic role, type, current value, and min/max/options where the node schema is known. Feed the keys DIRECTLY into run_template's overrides (same convention) for a schema→run round-trip.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
templateYesTemplate name/id: a bundled pack directory name (list_packs) or an official workflow template name (list_workflow_templates).
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided, so the description bears full responsibility. It details return fields (slots, other_slots), their structure (stable keys, semantic role, type, etc.), and explains the round-trip with run_template. No contradictions.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is informative and well-structured, but slightly lengthy. It front-loads purpose and then details output. While every sentence adds value, some could be more concise.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the simple input schema and no output schema, the description provides comprehensive context: input sources, output structure and semantics, and usage guidance. It equips the agent to understand and use the tool correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% with a description for the single parameter. The tool description adds valuable context: acceptable sources for the template name (list_packs or list_workflow_templates). This goes beyond the schema's generic description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose: get a template's overridable run-time parameters ('slots'). It specifies input (template name) and output structure (slots and other_slots). This distinguishes it from siblings like run_template.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly says 'before running it' and instructs to feed the keys into run_template's overrides. Provides clear context for when to use this tool and how to combine it with the sibling run_template.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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