Before you start

Full custom MCP support is currently available on ChatGPT Business and Enterprise/Edu workspaces on the web.

On ChatGPT Business, an Admin or Owner must add Alto Markets to the workspace before other members can use it.

If you are not an Admin or Owner, send this guide to the person who manages your ChatGPT workspace.

Alto Markets MCP endpoint – https:/alto-fx.com/mcp

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For your ChatGPT workspace administrator

Step 1 — Open Apps

Sign in to ChatGPT and make sure you are working inside the relevant Business, Enterprise or Edu workspace.

Go to:

Workspace Settings → Apps → Create

If prompted, enable Developer Mode.

On ChatGPT Business, only workspace Admins and Owners can enable Developer Mode and create or publish a custom MCP app.

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Step 2 — Add Alto Markets

Create a new custom app.

Enter:

Name
Alto Markets

MCP endpoint
https://alto-fx.com/mcp

Select the authentication option requested by ChatGPT.

Alto Markets uses secure OAuth authentication.

ChatGPT may scan the Alto MCP server to identify the available calculation tools as part of the setup process.

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Step 3 — Authorise Alto Markets

ChatGPT will direct you to Alto Markets to authorise the connection.

If you already have an Alto account:

Sign in with your existing account.

If you are new to Alto:

Select Register and create an account during the connection process.

Your Alto password is entered through Alto’s own authentication page and is not provided to ChatGPT.

Once authentication has been completed, you will be returned to ChatGPT.

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Step 4 — Complete the app setup

Once connected, Alto Markets should appear as a custom app in ChatGPT.

During testing it may initially appear under:

Workspace Settings → Apps → Drafts

and in your own Apps settings with a Dev label.

Workspace Admins and Owners can test the app before publishing it for other members of the workspace.

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Important — Start a new ChatGPT conversation

Once Alto Markets has been connected and authorised, open a new ChatGPT conversation before trying to use it.

The newly connected app may not appear in the conversation that was already open while you were completing the setup.

In the new conversation:

1. Open the Apps/Tools menu.
2. Select Alto Markets.
3. Ask your first FX question.

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For other members of the finance team

Once your workspace administrator has made Alto Markets available to the workspace:

Step 1

Open a new ChatGPT conversation.

Step 2

Open Apps/Tools and select Alto Markets.

Step 3

If prompted, connect your individual Alto account.

If you already have an Alto account, sign in.

If you do not, create one during the authentication process.

Step 4

Start asking FX questions in normal language.

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Try your first calculation

Once Alto Markets is connected, try:

“What is the current market rate for buying USD 100,000 against GBP for 30 November?”

Or upload an FX spreadsheet and ask:

“Analyse the executed FX trades in this spreadsheet and compare each transaction with the market rate at the time.”

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What can you ask Alto Markets to do?

Analyse executed FX trades

Compare historic spot and forward transactions with the relevant market rate at the time and estimate the embedded spread and monetary execution cost.

Value outstanding forwards

Calculate an indicative mark-to-market for existing FX forward contracts using current forward market rates.

Retrieve current FX rates

Ask for indicative current spot or forward market rates for specified currencies, amounts and value dates.

Retrieve historical FX rates

Ask for the indicative FX market rate at a particular historical date and time.

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Working with spreadsheets

You can also upload an FX schedule directly into ChatGPT and ask questions about it.

For example:

“Review this spreadsheet. Analyse the completed trades, mark the outstanding forwards to market and show me the remaining exposure by month.”

ChatGPT can interpret and organise the information in the spreadsheet while Alto Markets performs the specialist FX calculations.

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Alto Markets and ChatGPT perform different roles

ChatGPT understands and organises the question. Alto performs the FX calculation.

ChatGPT may independently summarise results, perform additional arithmetic or combine multiple Alto calculations.

Any interpretation or recommendation generated independently by ChatGPT is not a recommendation made by Alto Markets.

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Troubleshooting

Alto does not appear in the Apps/Tools menu

First, make sure you have opened a new ChatGPT conversation after completing the connection.

Also check that:

• you are using the correct ChatGPT workspace;
• Alto Markets has been made available by your workspace administrator;
• your Alto connection has been authenticated;
• you are using ChatGPT on the web, as full custom MCP support is currently web-only.

ChatGPT asks me to sign in to Alto

This is normal.

Each authorised user may need to connect their own Alto account before using Alto’s calculation tools.

If you do not already have an Alto account, you can register during this process.

I am not a ChatGPT workspace administrator

Send this installation guide to your ChatGPT Business, Enterprise or Edu workspace administrator and ask them to add Alto Markets using:

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Need help?

If you experience difficulty connecting Alto Markets, contact:

support@altomarkets.co.uk

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Start using Alto Markets in ChatGPT

Once Alto is connected, open a new conversation, select Alto Markets and ask your first FX question.

Alto MCP endpoint – https://alto-fx.com/mcp

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Important information

Alto Markets provides calculation and market-data outputs for informational purposes only.

Live market rates are indicative and are not executable quotes.

Alto’s Digital Services do not provide trading, hedging, investment, legal, tax or accounting advice.

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