Give your AI assistant live exchange rates

Finexly speaks the Model Context Protocol. Connect Claude, ChatGPT or any MCP client and it can read live rates for 170+ currencies, convert amounts, and look up history — without you writing a line of code.

Connect your assistant Read the docs

Things it can answer

An assistant without live data guesses at exchange rates, and its guess is as old as its training. With the connector attached it looks the number up.

“What is 4,500 USD in Japanese yen right now?”

Converts the amount at the current rate, not a remembered one.

“How has the euro moved against the dollar this quarter?”

Reads the daily series for a pair we collect and compares the ends of it.

“Price this invoice in the customer’s currency.”

Cross-rates through USD, the same way the API does.

Set up in three steps

  1. 1

    Open your assistant’s connector settings.

    In Claude: Settings → Connectors → Add custom connector. ChatGPT and other MCP clients have an equivalent screen.

  2. 2

    Paste the server URL.

    That is all the configuration there is. No API key to copy, no secret to store in a config file.

  3. 3

    Sign in and approve.

    You will be sent here to confirm the connection. Approving grants read access to rates and nothing else.

Server URL

https://mcp.finexly.com

What a connection can reach

Handing an AI assistant access to an account is a reasonable thing to be cautious about. Here is the whole of it.

It can

  • Read live exchange rates
  • Convert an amount between currencies
  • Read historical daily rates for collected pairs
  • List the currencies we cover

It cannot

  • See your account details or email
  • See your billing or payment information
  • Read, create or use your API keys
  • Change anything at all — every tool is read-only

A connection grants one scope, fx:read. There is no scope that grants account access, so there is nothing for a prompt-injected assistant to ask for. You can revoke a connection at any time from AI Connections.

Included in every plan

Tool calls come out of the same monthly allowance as REST requests, at a quarter of the cost each.

Plan MCP tool calls / month
Free 50
Starter 14,000
Growth 60,000
Professional 400,000
Business / Enterprise Unlimited

See full plan comparison →

Questions

What is MCP?

The Model Context Protocol is an open standard that lets an AI assistant call external tools. Adding the Finexly server gives your assistant four read-only tools for exchange rates, so it answers with live data instead of whatever it remembers from training.

Which assistants can connect?

Any MCP client. Claude and ChatGPT both support custom connectors over streamable HTTP with OAuth, which is what this server speaks. Editors and agent frameworks that implement MCP work the same way.

Can the assistant see my account or my API keys?

No. A connection grants exactly one scope, fx:read, and there is no scope that grants account access — not one you can decline, one that does not exist. Billing details, API keys and personal data are unreachable over MCP by construction.

How does it count against my plan?

Tool calls draw on the same monthly allowance as REST requests, at a quarter of the cost, because an assistant asks several small questions where an integrator makes one. The free plan includes a fixed allowance for evaluation.

Does it have history for every pair?

Live rates and conversions cover every currency we support, cross-rated through the US dollar. Historical series are available for the pairs we collect directly; ask for one we do not and the assistant is told so plainly rather than being handed an empty chart.

How do I disconnect?

From AI Connections in your dashboard. Disconnecting revokes the refresh token immediately, so the assistant loses access at once rather than when its current token expires.