Sampler Selector

ComfyUI's KSampler takes its sampler_name as a plain text field. Type dpmpp_2m, hit go. That's fine until you have a graph with several samplers and you want to change them all without opening each node - or you want the sampler choice to be a value that flows through the workflow like every other value. That's the gap Sampler Selector fills: a dropdown whose output is a typed sampler name, so ComfyUI treats the wire as valid input anywhere a sampler belongs.

How it works

Nothing clever, which is the point. The node pulls its options straight from comfy.samplers.KSampler.SAMPLERS - the same list core ComfyUI uses internally - and returns whatever you picked, unchanged. Because its output type is that full list rather than a generic string, it plugs into KSampler's sampler_name, FaceDetailer, SamplerCustom, and any other node that accepts the same set. No type warnings, no converters.

The nice side effect: the dropdown stays in sync with the ecosystem, not just the core. The 44 choices here include the cfg_pp family (euler_cfg_pp, dpmpp_2m_cfg_pp, res_multistep_ancestral_cfg_pp...) that don't ship in vanilla ComfyUI - they're registered by other installed packs. Install one of those and the new samplers show up here automatically, no updating this node involved.

The inputs that matter

There's exactly one: sampler, defaulting to euler, with those 44 choices. A few worth knowing by name - euler_ancestral and dpmpp_2m are the old workhorses, lcm is the one you want with distilled/Lightning-style checkpoints, and uni_pc/ddim are the deterministic options. The single output, sampler_name, is what you wire into the sampler slot. That's the whole node.

Honestly? For one KSampler you don't need this - type the name and move on. It earns its keep when the same sampler feeds several nodes, or when you're handing a workflow to someone else and you want the choice sitting visibly on the canvas instead of buried in a text box.

Installing it

This ships in jan-prompt-presets (https://github.com/kursopiko/jan-prompt-presets), a small bundle of prompt and sampler utilities by JAN (@kursopiko). Easiest route: ComfyUI Manager → Install Custom Nodes → search jan-prompt-presets → Install → restart ComfyUI.

Manual, if you prefer:

cd ComfyUI/custom_nodes
git clone https://github.com/kursopiko/jan-prompt-presets

Then restart ComfyUI. There's no requirements.txt and nothing to download - the whole pack is a handful of small Python files, which is refreshing in an ecosystem where half the install friction is dependency conflicts. All nodes land under the prompt/presets category.

Troubleshooting

• "Nothing happens." It's a passthrough - it doesn't generate, and it won't pick a "best" sampler for you. If output looks wrong, the sampler isn't the problem; steps, CFG and scheduler are.
• Node won't appear. Either the pack isn't installed or you skipped the restart. And remember it lives under prompt/presets, not under its display name alone.
• A sampler you expected is missing. That sampler isn't registered in your ComfyUI right now - usually it comes from a pack you haven't installed yet.