ComfyUI MCP Server

# Workflow Validation Checklist Before finalizing any workflow, verify: ## Required Checks ### 1. Node Types - [ ] All `class_type` values exist in `comfy_list_nodes()` output - [ ] No invented or guessed node types ### 2. Required Inputs - [ ] Every node has all required inputs from `comfy_node_schema()` - [ ] Input types match schema (INT, FLOAT, STRING, connections) - [ ] Connection references use valid format: `["node_id", output_index]` ### 3. Seed Behavior - [ ] Seed is explicitly set (0 for random, or fixed value for reproducibility) ### 4. Output Node - [ ] At least one output node present (SaveImage, PreviewImage, etc.) - [ ] Output node receives valid image input ### 5. Model References - [ ] All model filenames exist in their respective folders - [ ] Checkpoint/VAE/LoRA names match exactly (case-sensitive) ### 6. Validation - [ ] `comfy_validate_workflow()` returns `ok: true` - [ ] If validation fails, fix and re-validate until passing ## Common Issues | Issue | Fix | |-------|-----| | Unknown node type | Check `comfy_list_nodes()` | | Missing required input | Check `comfy_node_schema()` | | Wrong connection format | Use `["node_id", index]` not `"node_id"` | | Model not found | Verify exact filename in models folder | | No output | Add SaveImage or PreviewImage node | | Invalid seed type | Use integer, not string | | Wrong output index | Check node's RETURN_TYPES order via schema |