Your custom GPT is being retired. Its actions won't migrate.
OpenAI is retiring custom GPTs and moving them to plugins. The official migration carries over your instructions and files — but not your custom actions, not your sharing links, and not your audience. If your GPT calls an API, it breaks on the 11th of December unless someone rebuilds it.
The parts migration drops
OpenAI's migration tool moves instructions and knowledge files. It does not rebuild the three things that make a GPT valuable:
- Custom actions — every API call your GPT makes must be rebuilt as an MCP server. This is the big one.
- Sharing links — “anyone with the link” GPTs have no direct successor. External users need a new delivery path.
- Behaviour — a migrated plugin responds differently. Without regression testing, you find out from your customers.
Actions become MCP servers
We take your GPT's action schema and convert it into a production MCP server — hosted, secured and connected to your new plugin. Every endpoint becomes a tool. Auth is rebuilt properly. Nothing lives on a throwaway URL.
Then we run your ten most-used prompts against the old GPT and the new plugin, side by side, and fix what diverged.
Free migration audit
Send us your GPT's action schema. Within 48 hours you get a written report: what migrates cleanly, what breaks, what it takes to fix, and a fixed quote. No obligation — the report is yours either way.
If your GPT has no actions, the audit will tell you that too — and you'll know you're safe before the deadline, not after.
Request Your Free AuditHosted and maintained
A migrated plugin depends on a live MCP server — forever. We host and maintain yours on infrastructure built to outlast the migration window, so the December deadline is the last time you think about this.
Nine weeks. One deadline.
The audit is free. The report is yours. The deadline is not negotiable.
Get a Free Migration Audit