Custom Providers

By The Wando Team · October 16, 2026 · 5 min read

Custom providers let Wando Pro use image services it doesn’t officially support. Drag a small .wandoprovider file onto Wando, check where it sends your data, paste in your own API key, and the service shows up under Cloud Provider > Custom.

Overview

You can write a provider file by hand or have an AI assistant write it for you. If a service has an HTTP API, a provider file can describe it, so you don’t have to wait for us to add a model.

The quickest way to start is one of our ready-made files from Custom providers: proofs of concept, which cover Black Forest Labs, fal.ai, Replicate, Runware, RunComfy, WaveSpeedAI, Cloudflare Workers AI and Krea.

Quickstart: set up a custom provider

This walkthrough installs the Krea provider file. Every other provider file works the same way.

1. Drag the file onto Wando

Download the file, then drag it onto Wando Pro’s main window. You can drag in several files at once; each one gets its own review, and Cancel skips just that one.

2. Review where your data goes, then approve

The review opens as soon as you drop the file. It shows exactly which hosts receive your prompts and reference images, which host receives your API key, and which header the key goes in. It also lists every model with its price estimate. Nothing is sent anywhere until you approve.

You can paste your key here too, or leave it for later. Click Approve & Install.

If you have the provider’s text rather than a file, such as a reply from your AI assistant, choose Cloud Provider > Custom > Manage Custom Providers, click Add, paste it in and click Review.

3. Add your API key

If you skipped the key, open Cloud Provider > Custom > Manage Custom Providers. The provider shows Needs API key in the list; select it and click Set API Key. Use the Get a key link if you don’t have one yet.

Some providers need more than a key. The Cloudflare Workers AI file also asks for your account ID, so its button reads Configure. Both values stay in your keychain.

4. Choose which tools each model joins (optional)

When the provider shows Ready, each model has a Use in row. Select Multi-Gen, Multi-Edit, Advanced Edit, Social Media or Universal Edit to add that model to those tools. Use in All selects every box a provider’s models can take. A greyed-out box means the model can’t take part in that tool yet, often because the file doesn’t list its exact sizes.

5. Pick the provider and generate

Close the manager and pick the provider under Cloud Provider > Custom. Its models appear as tabs in the main row, between Gallery and Tools. Each tab shows an estimated price before you generate.

Have your AI write or extend a provider

Wando doesn’t need to know about a provider or model in advance. Any AI chat assistant can write or update a provider file for you:

To change a provider you already have, select it in the manager, open Edit JSON and use Copy for AI. Paste the updated reply back into the editor, then validate and save.

If the file breaks, two buttons put the details on your clipboard for the assistant:

• Copy Errors for Your AI lists each problem in the file with its exact location, plus the file itself.
• Copy Debug Report on a failed generation copies the requests and responses, with your key removed, and the file.

Requests like these work well:

• “Add fal-ai/some-new-model to this file. Here are its docs: …”
• “The provider renamed image_input to images; update the file.”
• “Map every size of this model so I can use it in Advanced Edit.”

Privacy and trust

A provider file is plain JSON describing an HTTP API, with no code in it. Wando makes the requests itself, so the file can’t do anything on your computer, and you can open it in any text editor to see where your prompts and images go.

Wando only contacts the hosts the file lists, and checks links that come back from the provider against the same list.

What it costs

You pay the provider directly. Each model in our files carries the provider’s public list price, at the most expensive tier, so estimates may be high.

Want more custom providers?

Browse the full list, with download links, model counts and setup notes, on Custom providers: proofs of concept.