Convert OpenAI to .0n
Export your Custom GPTs, Assistants, and Actions. Convert them to portable .0n workflows. Run anywhere with 1,589 tools.
The Problem with OpenAI Lock-in
Your AI workflows deserve to be portable. Here is why developers are migrating away from OpenAI-only setups.
Vendor Lock-in
Your GPT configs, prompts, and actions are trapped inside OpenAI. If they change pricing, deprecate models, or limit API access — you lose everything.
No Portability
Custom GPTs can't run outside ChatGPT. Your carefully crafted assistants are stuck in one ecosystem with no export button.
Limited Integrations
OpenAI Actions connect to a handful of services. 0nMCP gives you 1,589 tools across 102 services — instantly.
Pricing Uncertainty
API costs fluctuate. Token pricing changes quarterly. With .0n, you own the workflow and choose your execution platform.
Full Conversion Map
See exactly what transfers from OpenAI to .0n — and how each field maps.
| Component | OpenAI Field | .0n Target | Status |
|---|---|---|---|
| System Prompts | instructions / system | system.prompt | Full |
| Model Config | model, temperature, top_p | system.config | Full |
| Functions/Tools | tools[].function | steps[].action | Full |
| Actions (APIs) | actions[].openapi | steps[].transform | Full |
| Knowledge Files | file_ids[] | metadata.files | Reference |
| Conversation History | threads / messages | Not transferred | N/A |
How to Export from OpenAI
Follow these steps to extract your AI config. No special tools required.
Open ChatGPT
Go to chat.openai.com and sign in to your account
Find Your GPT
Click "Explore GPTs" → "My GPTs" to see your custom GPTs
Edit the GPT
Click the GPT name → "Edit GPT" to access the configuration
Copy the Config
Copy the Instructions, Actions schema, and any function definitions
API Method (Optional)
Use the Assistants API: GET /v1/assistants/{id} to get the full JSON config
Save as JSON
Paste everything into a JSON file and save it
Upload to Brain Transplant
Sign in to 0nMCP, go to Convert, and upload your file. Done!
OpenAI vs .0n Standard
| Feature | OpenAI | .0n Standard |
|---|---|---|
| Tool Count | ~20 built-in tools | 1,589 tools across 102 services |
| Portability | Locked to ChatGPT / API | Runs anywhere (any AI client) |
| Format | Proprietary JSON | Open .0n Standard |
| Pricing | Per-token, per-API-call | Free core, $0.01/execution |
| Integrations | Manual Actions setup | 26 pre-built service connectors |
| Version Control | No native support | Git-friendly text files |
| Multi-AI | OpenAI models only | Works with any LLM |
Frequently Asked Questions
Can I convert a Custom GPT without API access?
Yes! You can manually copy the Instructions and Actions from the ChatGPT editor. Our converter accepts both the full API export JSON and manually assembled configs.
Will my converted workflow work exactly the same?
The .0n workflow preserves all transferable configuration — prompts, tools, functions, and settings. The actual AI responses depend on which model you run with, but the workflow structure is identical.
What about my knowledge files?
File references are preserved in the workflow metadata. The actual files need to be uploaded separately to your 0nMCP instance. We convert the references so you know exactly which files to add.
Is the conversion reversible?
Yes — .0n files are human-readable JSON. You can always extract the original prompts and configs, or convert back to OpenAI format.
Do I need to pay for conversion?
No — Brain Transplant conversion is free. You only pay when you execute workflows through 0nMCP ($0.01 per execution on the marketplace, or free if self-hosted).
Free Your GPTs
Convert your OpenAI workflows to .0n in seconds. No lock-in. No limits. 1,589 tools ready to go.