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FastForex currency API

Physical currencies, rates and conversions

FastForex currency API is one of 7 APIs that FastForex publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Currency. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and rate-limit docs.

This API exposes 9 operations across 9 paths, and defines 11 schemas. It is described by OpenAPI 3.0.3, at version 2.3.2.

Requests are made against 2 base URLs: https://api.fastforex.io, https://api.beta.fastforex.io.

9 operations 9 paths 11 schemas 9 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.0.3
API Version
2.3.2
Base URL
https://api.fastforex.io
Authentication
API Key, API Key, HTTP Bearer, HTTP Basic
License
Terms of Service
Resource Areas
1

Authentication & Security 4

FastForex currency API declares 4 security schemes for authenticating requests. An API key is passed in the query as api_key (api_key). An API key is passed in the header as X-API-KEY (apiKeyHeader). It accepts HTTP bearer tokens (api_key) (bearerAuth). It accepts HTTP basic authentication (basicAuth). By default, every request must be authenticated.

Paths & Operations 9

Across 9 paths, the API surfaces 9 operations — 9 GET. Each is listed below with its method, path, parameters, and response codes.

currency 9

Physical currencies, rates and conversions

GET
/fetch-one
Fetch a single currency exchange rate, from and to any supported physical or digital currency. Midpoint spot rate.
2 params → 200400401403429
GET
/fetch-multi
Fetch multiple target exchange rates from a single source currency. Midpoint spot rates.
2 params → 200400401403429
GET
/fetch-all
Fetch all available currency rates for the supplied source currency. Midpoint spot rates.
1 param → 200400401403429
GET
/fetch-many-to-one
Fetch a set of many source currency rates to a single target currency (inverse of /fetch-multi). Midpoint spot rates. Costs one API call per pair returned.
2 params → 200400401403429
GET
/fetch-matrix
Fetch a matrix of multiple from/to currency pairs. Midpoint spot rates. Costs one API call per pair returned.
2 params → 200400401403429
GET
/convert
Convert an amount of one currency into another currency (supports physical and digital currencies)
4 params → 200400401403429
GET
/historical
Fetch midpoint currency exchange rates for a date in the past
3 params → 200400401403404429
GET
/time-series
Fetch a time-series dataset of daily currency exchange rates for the specified interval (only daily supported currently). See our FX quote & OHLC time-series endpoints for more granular data.
5 params → 200400401403429
GET
/currencies
Fetch a list of 160+ supported currencies with symbols. Also see /crypto/currencies
→ 200400401429

Schemas 11

The contract defines 11 schemas that model the data the API accepts and returns. Each schema is shown below with its type and property counts.

IsoDateTimeZone
string
ISO8601 Datetime with optional timezone offset YYYY-MM-DDTHH:MM:SS±HH:00
DateTimes
A datetime value. If no timezone offset supplied, UTC/GMT is assumed.
DateTime
string
UTC/GMT datetime YYYY-MM-DD HH:MM:SS
AnyCurrency
string
Currency code for a physical or digital/cryptocurrency
CurrencyList
string
A comma-separated list of three-letter ISO 4217 currency codes
ApiUsage
number
The number of API calls consumed by this request
Date
string
UTC/GMT date YYYY-MM-DD
TimestampMillis
number
Milliseconds since Jan 1 1970 (unix timestamp with millisecond precision)
ResponseTime
number
Server response time in milliseconds
Currency
string
Three-letter ISO 4217 currency code
Duration
string
ISO8601 Duration. https://en.wikipedia.org/wiki/ISO8601Durations

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

fastforex-currency-api-openapi.yml Raw ↑

Other APIs FastForex publishes across the network.

FastForex admin API
FastForex crypto API
FastForex fx API
FastForex plan-extra API
FastForex plan-one API
FastForex plan-premium API
Where this information came from

This is an independent, third-party profile of FastForex currency API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

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