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Historical exchange rates

by Frankfurter
frankfurter/historical

Historical exchange rates is a tool from Frankfurter, callable through the AgentSky API as frankfurter/historical and billed per call ($0.01).

Read central-bank reference exchange rates for one past date.

Overview

Read central-bank reference exchange rates for one past date. Source: https://frankfurter.dev/. Upstream is public and requires no API key; Gateway access requires your gateway key. Standard list price: $0.01 per successful call. Supplier rate limits apply.

JSON with amount, base, date and rates; date is the nearest earlier business day.

Input

These go in the input object of the run request.

FieldTypeRequiredDescription
datestringYesDate as YYYY-MM-DD, 1999-01-04 or later.
basestringNoISO 4217 base currency; defaults to EUR.
symbolsstringNoComma-separated ISO 4217 target currencies; defaults to all.

Requests up to 1 MB.

Example

Use your own API key and a saved idempotency key for each new job. Replace image or media placeholders with your own publicly reachable HTTPS URLs. Keep the same key and request body when recovering a timeout.

# Set once per job; reuse this key and the identical body after a timeout.
: "${AGENTSKY_IDEMPOTENCY_KEY:?Set a unique, saved key for this job}"
curl --fail-with-body https://gateway.agentsky.dev/v1/run \
  -H "authorization: Bearer $AGENTSKY_API_KEY" \
  -H "content-type: application/json" \
  -H "Idempotency-Key: $AGENTSKY_IDEMPOTENCY_KEY" \
  -d '{"provider":"frankfurter","endpoint":"historical","input":{"date":"2025-01-02"}}'
# If status is READY/RUNNING, poll GET /v1/runs/{runId} with the same API key.

Pricing

$0.01 per call using your plan when signed in. Read the final customer charge from price.amount.value after the run finishes. A RUNNING response is not the final bill.

Questions