GENE-Frankfurter
GENE-Frankfurter gives your AI assistant and Feluda Flows direct access to live and historical foreign exchange rate data sourced from the European Central Bank — one of the most trusted and widely
GENE-Frankfurter: Live and Historical Currency Exchange Rates for Your AI
GENE-Frankfurter gives your AI assistant and Feluda Flows direct access to live and historical foreign exchange rate data sourced from the European Central Bank — one of the most trusted and widely referenced rate providers in the world. With this gene installed, your AI can retrieve today's exchange rates for any supported currency pair, look up rates for any past date going back decades, convert any amount between currencies, analyse rate trends across custom date ranges, and calculate statistical summaries such as average, minimum, maximum, and percentage change — all in a single, always-available capability layer inside your Feluda application.
Whether you are building financial tools, automating multi-currency reporting, enriching business data with rate context, or simply need your AI to reason confidently about money and exchange rates, GENE-Frankfurter gives you immediate, reliable access to 30 currencies backed by ECB reference data — with no account, no API key, and nothing to configure before you start.
What can I do with GENE-Frankfurter enabled?
Once the gene is connected, your AI can check the current exchange rate between any two supported currencies and get rates for a whole basket of currencies at once with a single call. It can look up the exact rate on any specific date in the past — from yesterday to many years ago — enabling precise historical comparisons. It can convert any amount from one currency into one or many target currencies using that day's ECB reference rate, and immediately show the converted result. It can retrieve a full day-by-day rate series over any period you define, or from any start date all the way through to today. It can also compute per-currency statistics across any historical window — minimum rate, maximum rate, average rate, opening and closing rate, total change, and percentage change — making it straightforward for your AI to summarise rate behaviour over weeks, months, or years. Every operation is logged to a local history database, so your AI can refer back to previous lookups and build on prior results without making duplicate requests.
What tools does GENE-Frankfurter include?
GENE-Frankfurter comes with two powerful, production-ready tools. Every tool supports a help call that returns an immediate, plain-language summary of what that tool does, what parameters it accepts, and example uses — so your AI always knows exactly what to do before making a call.
| Tool | What it does |
|---|---|
| Frankfurter Rates | The core exchange rate tool. Retrieves the full list of all 30 supported currencies with their names. Fetches the latest ECB reference rates for any base currency against any combination of target currencies. Looks up the official rate for any specific past date — the ECB nearest trading day is returned when weekends or public holidays are requested. Converts any amount from a base currency into one or more target currencies using that day's live rate, returning each conversion result with the rate applied and the calculated amount. Every rate lookup and conversion is logged to the local history database for future reference. |
| Frankfurter Time Series | The date-range analysis tool. Retrieves a complete day-by-day rate series between any start date and end date for any base currency and target symbol set — returning the full chronological rate table. Supports open-ended series from any start date through to today's most recent available rate. Also computes statistical summaries over any date range: for each requested currency symbol it returns the minimum rate, maximum rate, average rate, first and last rates in the period, absolute change, and percentage change — all rounded and ready for immediate use in reports, comparisons, or downstream analysis. |
What is the data source behind GENE-Frankfurter?
GENE-Frankfurter is powered by Frankfurter, an open exchange rate API that publishes the official daily reference rates issued by the European Central Bank. The ECB publishes these rates every working day and they are used globally as a neutral, authoritative reference — by financial institutions, accounting systems, government agencies, and international businesses. Frankfurter makes those rates freely accessible with no authentication, no rate-limiting sign-up, and no commercial restrictions. GENE-Frankfurter brings that data directly into your AI and automation workflows.
No account or credentials required
GENE-Frankfurter is ready to use the moment it is installed. There is no API key to obtain, no account to register, and no credentials to manage. Both tools perform read-only access to publicly available ECB reference data. Install the gene, connect it to your AI, and start working with exchange rate data immediately.
Settings you can configure
GENE-Frankfurter exposes several settings from the Feluda Settings page that let you tune how the gene behaves without changing anything in your workflow.
| Setting | Description |
|---|---|
| User Agent | The identifier sent with every request. The default correctly identifies requests as coming from Feluda and is appropriate for all users. |
| Base URL | The API endpoint used for all rate data requests. The default points to the standard Frankfurter service. Change this only if you are running a self-hosted Frankfurter instance. |
| Default Base Currency | The currency used as the base when no base is specified in a request. Defaults to EUR. Change this to your home currency if you work primarily in a different currency such as USD, GBP, or JPY. |
| Max Tokens In Response | Controls the maximum size of a single tool response before the gene automatically splits it into readable pages. Adjust this to match the context window of the AI model you are using — larger values return more data per call. |
| Store Raw Responses | When enabled, the raw rate data received from the API is saved locally in your dataspace. Useful for inspection and auditing. Leave disabled in everyday use to keep your dataspace clean. |
| History Retention Days | How many days of lookup history to keep in the local database. Records older than this threshold are removed when history is pruned. The default keeps 30 days of lookups. |
Every tool has built-in help
Every tool in GENE-Frankfurter has a built-in help case. When your AI calls any tool with the help option, it immediately receives a structured description of what that tool does, all the parameters it accepts, which are required and which are optional, and a summary of every available operation. Your AI never has to guess what a tool needs — it can always ask the tool to explain itself first, and then proceed with exactly the right call. This makes GENE-Frankfurter reliable even when working with models that have never encountered the gene before.
How GENE-Frankfurter works inside Feluda Flows
GENE-Frankfurter becomes significantly more powerful when wired into Feluda Flows. Both tools can be connected into multi-step automated pipelines, turning what would otherwise be manual lookups into repeatable, scalable workflows that run without any human intervention.
Real-world use cases
Here are examples of how different users put GENE-Frankfurter to work.
Handy starting commands
These are ready-to-use prompts you can give your AI once GENE-Frankfurter is installed. Adapt the wording to your own style — your AI will know exactly what to do.
| What you want to do | What to say to your AI | What happens |
|---|---|---|
| Get latest rates | What are the current EUR exchange rates against USD, GBP, and JPY? | Fetches the latest ECB reference rates for EUR as the base, returning the current rate for each requested target currency. |
| Convert an amount | Convert 500 USD to EUR, GBP, and CHF using today's rates. | Retrieves the current ECB rates for each target currency and returns the converted amount for each one, showing the rate applied and the result. |
| Look up a historical rate | What was the EUR to USD rate on 1 June 2023? | Fetches the official ECB reference rate for that date and returns the rate for the requested currency pair. |
| List all supported currencies | What currencies does GENE-Frankfurter support? | Returns the full list of all 30 currencies available, with each currency code and its full name. |
| Get a rate series | Show me the daily EUR to USD rate from 1 January 2024 to 31 January 2024. | Returns the complete day-by-day ECB reference rate series for the requested currency pair over the defined period. |
| Analyse rate statistics | What were the minimum, maximum, and average EUR to USD and GBP rates in Q1 2024? | Fetches the full rate series for the period and returns a statistical summary per currency — minimum, maximum, average, first, last, absolute change, and percentage change. |
| Open-ended series to today | Fetch the EUR to GBP rate series from 1 January 2025 to today. | Returns all available ECB reference rates from the start date through to the most recent available trading day. |
| Historical conversion | What would 10,000 GBP have been worth in EUR on 15 March 2020? | Fetches the ECB reference rate for that specific date and returns the converted amount — useful for historical valuations and retrospective cost analysis. |
Reliable ECB reference data — always free, always open
The European Central Bank publishes official daily reference exchange rates for 30 currencies against the Euro. These rates are recognised internationally as a neutral, authoritative reference and carry no commercial restrictions. GENE-Frankfurter connects directly to this data through the Frankfurter open API — no authentication, no sign-up, and no usage caps. Everything the gene does goes directly from your Feluda application to the Frankfurter service, returning clean and structured rate data that your AI can work with immediately.
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