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ToolCargo

A practical MCP workflow

Research ECB reference exchange rates with AI and MCP

Use supported_currencies before latest_rates. ToolCargo reads the ECB’s direct daily XML feed, retains its original per-euro decimals and publication date, and derives selected cross-rates and optional conversion amounts. ECB source data are freely available on the ECB website.

Built for: Agents preparing dated informational currency comparisons.

What to connect

Create a ToolCargo account and use OAuth or an API key with a supported MCP client. Hosted connectors share your plan’s call quota; connect each required MCP endpoint separately. Review provider permissions before starting.

Client setup and test status · Current plans and limits

Run the workflow

  1. 1. Check current published currencies

    Call supported_currencies. Coverage comes from the fetched daily feed plus implicit EUR=1; do not assume every ISO currency is published. SAR and AED are not promised.

  2. 2. Select the base and quotes

    Call latest_rates with one to twelve unique quote symbols. EUR is the default base. To convert an amount, provide amount and quote together; quote is included even if it is outside symbols.

  3. 3. Keep source and derived figures distinct

    Retain the publication date, retrieval time and original per-euro decimal strings. ToolCargo derives each quote as its ECB per-euro rate divided by the base currency’s per-euro rate, and rounds converted amounts to four decimal places.

  4. 4. Label informational reference rates

    Cite the European Central Bank and identify ToolCargo’s modifications. ECB data are freely available; any ToolCargo fee covers hosted access, not purchase of ECB data. These working-day rates are informational and transaction use is strongly discouraged by the ECB.

A prompt to try

Use ToolCargo supported_currencies to check the ECB daily feed, then latest_rates with base EUR, symbols USD and GBP, amount 1150 and quote USD. Show the publication date, retrieval time and original per-euro decimals beside the derived conversion. Attribute the ECB and disclose the freely available source and ToolCargo modifications. Treat the result as an informational reference, not a transaction or tax rate.

What a useful result looks like

Current currency coverage → source publication date → original per-euro decimals → selected derived cross-rates → optional rounded conversion → attribution and use context.

Know the limits

Only currently published ECB daily currencies. No intraday feed, historical-rate query, guaranteed exchange execution or ZATCA determination. Holidays can leave an earlier publication date and rates can be amended. Each successful list or quote uses one shared-plan call with a fresh bounded fixed-source fetch.

Common questions

Can I convert SAR or AED?

Those currencies are not promised by this ECB connector. Check supported_currencies; unsupported currency requests return a clear error.

Why check publicationDate separately from fetchedAt?

publicationDate belongs to the ECB reference feed; fetchedAt records ToolCargo’s retrieval time. A fresh fetch can contain the previous working day’s data.

Are these bank or transaction quotes?

No. They are informational ECB reference rates, whose transaction use the ECB strongly discourages.

References and tool documentation

Use the provider’s documentation to check the underlying concepts, and ToolCargo’s references for the exact tools, inputs and limits.

Tool references for this workflow

Continue with the tools

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