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save_workflow

Save a workflow JSON to the ComfyUI server's user library to make it appear in the web UI. Accepts API or UI format and overwrites existing files without confirmation.

Instructions

Save a workflow JSON to the connected ComfyUI server's user library so it appears in the ComfyUI web UI. Requires a running ComfyUI server; this writes to that server's userdata and overwrites any existing file with the same filename without confirmation. Accepts API-format or UI-format JSON. Returns a confirmation message, or the HTTP status and error text on failure.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
filenameYesFilename to save as (e.g. 'my_workflow.json'). Will overwrite if it already exists.
workflowYesWorkflow JSON to save (API or UI format). Stored verbatim; not validated before saving.
Behavior4/5

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

No annotations provided, so description carries burden. Discloses overwrite without confirmation, return type (confirmation or error), and format acceptance. Could mention permissions or side effects but sufficient.

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

Conciseness5/5

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

Four sentences, no fluff, front-loaded with main purpose. Every sentence adds essential information.

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 simplicity of tool and full schema coverage, description covers purpose, prerequisites, behavior, and response. No gaps for effective use.

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%, but description adds value by specifying that 'workflow' accepts API or UI format and is stored verbatim without validation. This enhances understanding beyond schema.

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?

Description clearly states the action (save), resource (workflow JSON), and destination (user library). Distinct from siblings like 'create_workflow' or 'modify_workflow'.

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

Usage Guidelines4/5

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

Description provides context: requires running server, overwrites files, accepts both formats. Does not explicitly mention alternatives or when not to use, but implied context is clear.

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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