Connect ChatGPT

ChatGPT calls these plugins, and they live in a directory. Hiasynth is on its way into it; until it's listed, you add it by address, which takes ChatGPT's developer mode. Whether you can switch that on depends on your plan and workspace; in a Business or Enterprise workspace an admin may need to allow it first.

Switch on developer mode

  • Open Settings, then Security and login.
  • Turn on Developer mode.

Add Hiasynth

  • Open Plugins in ChatGPT and click the + button.
  • Call it Hiasynth, paste this address as the server URL, and create the connection.
https://mcp.hiasynth.co

Say yes to the handshake

A Hiasynth page opens. Sign in with Google, GitHub or Discord (new here? that just made your account), read what ChatGPT is asking for, and click Approve. You're sent straight back to ChatGPT, connected.

The Hiasynth consent card for ChatGPT

The card tells you which app is asking and where you'll be sent back

Ask

ChatGPT can now see every Hiasynth tool and the full catalogue. Answers need a subscription on your Hiasynth account; the Pricing page has the details. Start a new chat, switch Hiasynth on from the tools menu, and type:

How big is the market for premium electric bikes in the Netherlands, and which cities should we launch in first?

ChatGPT reaches for Hiasynth, sizes the segment, and hands you a ranked list of cities with the numbers behind it. That's a market analysis, in a chat, in seconds.

Ask before you've subscribed and you get a short note with a link to the plans instead of an answer. Nothing is broken; the connection is fine.

What next

  • What to ask: questions that show what Hiasynth is good at.
  • Pricing: one subscription, credits that meter what you ask.
  • Troubleshooting: the short list of things that go wrong, and the fix for each.