FastForex

FastForex is a fast, reliable REST API providing real-time and historical currency exchange rates for 160+ world currencies, 500+ cryptocurrencies, and 2,300+ FX trading pairs. Features include currency conversion, many-to-one and multi-rate lookups, OHLC candlestick data, bid/ask pricing, WebSocket streaming, and up to 55 years of historical data. Average response time of 21ms with 100% uptime SLA.

FastForex publishes 4 APIs on the APIs.io network, including admin API, crypto API, currency API, and 1 more. Tagged areas include Currency Exchange, Forex, Financial Data, Exchange Rates, and Cryptocurrency.

The FastForex catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

FastForex’s developer surface includes authentication, documentation, engineering blog, pricing, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

40.9/100 developing ▬ flat Agent 29/100 agent ready saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemiumSelf serveFree trial⚡ Free to try

1 APIs

Currency Exchange Forex Financial Data Exchange Rates Cryptocurrency FX Trading Historical Data Real-Time Data

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 40.9/100 · developing

Contract Quality 11.3 / 21

Developer Ergonomics 3.6 / 17

Access Clarity 8.5 / 17

Operational Transparency 4.1 / 11

Contract Governance 1.0 / 10

Discoverability 5.8 / 9

Regulatory Posture 5.7 / 15

Agent readiness — 29/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 4 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Securities & Market Data regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/fastforex: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 4

Individual APIs this provider publishes, each with its own machine-readable definition.

FastForex admin API

Account admin

FastForex crypto API

Digital currencies, pairs & prices

FastForex currency API

Physical currencies, rates and conversions

FastForex fx API

Realtime FX trading pairs - instruments, prices and history

Open Collections 8

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

fastFOREX.io admin API

OPEN COLLECTION

fastFOREX.io admin crypto API

OPEN COLLECTION

fastFOREX.io admin currency API

OPEN COLLECTION

fastFOREX.io admin fx API

OPEN COLLECTION

fastFOREX.io admin plan-extra API

OPEN COLLECTION

fastFOREX.io admin plan-one API

OPEN COLLECTION

fastFOREX.io admin plan-premium API

OPEN COLLECTION

Scroll for all 8

Pricing Plans 1

Published pricing tiers and plan structures.

Fastforex Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Fastforex Rate Limits

9 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Fastforex Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Fastforex Context

0 classes · 36 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

FastForex API Rules

5 rules · 4 warnings 1 info

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

ConvertResponse

4 properties

JSON SCHEMA

Currency

0 properties

JSON SCHEMA

FetchMultiResponse

4 properties

JSON SCHEMA

FetchOneResponse

4 properties

JSON SCHEMA

FxQuoteResponse

2 properties

JSON SCHEMA

OhlcTimeSeriesResponse

10 properties

JSON SCHEMA

Examples 6

Example request and response payloads for these APIs.

Convert

3 fields

EXAMPLE

Fetch Multi

3 fields

EXAMPLE

Fetch One

3 fields

EXAMPLE

Fx Quote

3 fields

EXAMPLE

Historical

3 fields

EXAMPLE

Ohlc Time Series

3 fields

EXAMPLE

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Fastforex Authentication

apiKey/http · 4 schemes

SECURITY

Fastforex Domain Security

TLSv1.3 · HSTS

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Fastforex Agentic Access

20 operations

20 operations · 0 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrg

GitHubOrg

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: fastforex
name: FastForex
description: FastForex is a fast, reliable REST API providing real-time and historical currency exchange rates for 160+ world
  currencies, 500+ cryptocurrencies, and 2,300+ FX trading pairs. Features include currency conversion, many-to-one and multi-rate
  lookups, OHLC candlestick data, bid/ask pricing, WebSocket streaming, and up to 55 years of historical data. Average response
  time of 21ms with 100% uptime SLA.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: true
  try_now: true
  public: false
  label: Freemium (free trial) · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/fastforex.png
url: https://raw.githubusercontent.com/api-evangelist/fastforex/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.23'
type: Index
tags:
- Currency Exchange
- Forex
- Financial Data
- Exchange Rates
- Cryptocurrency
- FX Trading
- Historical Data
- Real-Time Data
apis:
- aid: fastforex:fastforex-admin-api
  name: FastForex admin API
  description: Account admin
  humanURL: https://www.fastforex.io/docs
  baseURL: https://api.fastforex.io
  tags:
  - Admin
  tags_raw:
  - admin
  properties:
  - type: OpenAPI
    url: openapi/fastforex-admin-api-openapi.yml
  - type: Documentation
    url: https://www.fastforex.io/docs
  - type: Plans
    url: plans/fastforex-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/fastforex-rate-limits.yml
  - type: FinOps
    url: finops/fastforex-finops.yml
- aid: fastforex:fastforex-crypto-api
  name: FastForex crypto API
  description: Digital currencies, pairs & prices
  humanURL: https://www.fastforex.io/docs
  baseURL: https://api.fastforex.io
  tags:
  - Crypto
  tags_raw:
  - crypto
  properties:
  - type: OpenAPI
    url: openapi/fastforex-crypto-api-openapi.yml
  - type: Documentation
    url: https://www.fastforex.io/docs
  - type: Plans
    url: plans/fastforex-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/fastforex-rate-limits.yml
  - type: FinOps
    url: finops/fastforex-finops.yml
- aid: fastforex:fastforex-currency-api
  name: FastForex currency API
  description: Physical currencies, rates and conversions
  humanURL: https://www.fastforex.io/docs
  baseURL: https://api.fastforex.io
  tags:
  - Currency
  tags_raw:
  - currency
  properties:
  - type: OpenAPI
    url: openapi/fastforex-currency-api-openapi.yml
  - type: Documentation
    url: https://www.fastforex.io/docs
  - type: Plans
    url: plans/fastforex-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/fastforex-rate-limits.yml
  - type: FinOps
    url: finops/fastforex-finops.yml
- aid: fastforex:fastforex-fx-api
  name: FastForex fx API
  description: Realtime FX trading pairs - instruments, prices and history
  humanURL: https://www.fastforex.io/docs
  baseURL: https://api.fastforex.io
  tags:
  - FX
  tags_raw:
  - fx
  properties:
  - type: OpenAPI
    url: openapi/fastforex-fx-api-openapi.yml
  - type: Documentation
    url: https://www.fastforex.io/docs
  - type: Plans
    url: plans/fastforex-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/fastforex-rate-limits.yml
  - type: FinOps
    url: finops/fastforex-finops.yml
common:
- type: AgenticAccess
  url: agentic-access/fastforex-agentic-access.yml
- type: DomainSecurity
  url: security/fastforex-domain-security.yml
- type: Authentication
  url: authentication/fastforex-authentication.yml
- type: Website
  url: https://www.fastforex.io
- type: Documentation
  url: https://www.fastforex.io/docs
- type: GitHubOrg
  url: https://github.com/fastforex
- type: Blog
  url: https://www.fastforex.io/hub
- type: Pricing
  url: https://www.fastforex.io/hub/2026-new-plans-new-features-new-data
- type: X
  url: https://x.com/fastforex_io
- type: Plans
  url: plans/fastforex-plans-pricing.yml
- type: RateLimits
  url: rate-limits/fastforex-rate-limits.yml
- type: FinOps
  url: finops/fastforex-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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