Open Exchange Rates

Open Exchange Rates provides a simple, reliable REST API for live and historical foreign exchange (forex) rates covering 200+ world currencies, with end-of-day historical data back to January 1st, 1999. The JSON API delivers latest rates, historical snapshots, bulk time-series, currency conversion, and OHLC data, authenticated with a per-account App ID and priced in published monthly tiers that start with a free plan.

Open Exchange Rates publishes 7 APIs on the APIs.io network, including Convert API, Currencies API, Historical Rates API, and 4 more. Tagged areas include Foreign Exchange, Currency, Exchange Rates, FX, and Currency Conversion.

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

Open Exchange Rates’ developer surface includes authentication, documentation, pricing, support, and 14 more developer resources.

🌐 Visit website 📡 Source on GitHub

50.7/100 developing ▬ flat Agent 29/100 agent ready Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0

AccessFreemiumSelf serve⚡ Free to try

7 APIs

Foreign Exchange Currency Exchange Rates FX Currency Conversion Forex Financial Data

Kin Score

Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0

Composite quality — 50.7/100 · developing

Contract Quality 15.2 / 25

Developer Ergonomics 6.2 / 20

Access Clarity 14.2 / 20

Operational Transparency 6.5 / 13

Contract Governance 1.2 / 12

Discoverability 7.4 / 10

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 Surface 0 / 5

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/openexchangerates: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 7

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

Open Collections 10

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

Rate Limits 1

Documented rate limits and quota policies.

Openexchangerates Rate Limits

6 limits

RATE LIMITS

FinOps 1

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

JSON Schema 4

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

Examples 4

Example request and response payloads for these APIs.

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 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

PostmanWorkspace

PostmanWorkspace

GitHubOrg

GitHubOrg

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 4

Status, limits, changes, and where to get help

RateLimits

StatusPage

Support

Contact

Commercial 5

Pricing, plans, and the legal terms of use

Pricing

Plans

FinOps

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

LinkedIn

Website

Website

Source (apis.yml)

aid: openexchangerates
url: https://raw.githubusercontent.com/api-evangelist/openexchangerates/refs/heads/main/apis.yml
name: Open Exchange Rates
kind: company
description: Open Exchange Rates provides a simple, reliable REST API for live and historical foreign exchange (forex) rates
  covering 200+ world currencies, with end-of-day historical data back to January 1st, 1999. The JSON API delivers latest
  rates, historical snapshots, bulk time-series, currency conversion, and OHLC data, authenticated with a per-account App
  ID and priced in published monthly tiers that start with a free plan.
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/openexchangerates.png
tags:
- Foreign Exchange
- Currency
- Exchange Rates
- FX
- Currency Conversion
- Forex
- Financial Data
created: '2026-07-11'
modified: '2026-08-08'
specificationVersion: '0.23'
apis:
- aid: openexchangerates:openexchangerates-convert-api
  name: Open Exchange Rates Convert API
  description: Convert a value between two currencies at the latest rates.
  humanURL: https://docs.openexchangerates.org/reference/latest-json
  baseURL: https://openexchangerates.org/api
  tags:
  - Convert
  properties:
  - type: OpenAPI
    url: openapi/openexchangerates-convert-api-openapi.yml
  - type: Documentation
    url: https://docs.openexchangerates.org/reference/api-introduction
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/latest-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/historical-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/time-series-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/convert
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/currencies-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/ohlc-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/usage-json
- aid: openexchangerates:openexchangerates-currencies-api
  name: Open Exchange Rates Currencies API
  description: List of supported currency symbols and names.
  humanURL: https://docs.openexchangerates.org/reference/latest-json
  baseURL: https://openexchangerates.org/api
  tags:
  - Currency
  tags_raw:
  - Currencies
  properties:
  - type: OpenAPI
    url: openapi/openexchangerates-currencies-api-openapi.yml
  - type: Documentation
    url: https://docs.openexchangerates.org/reference/api-introduction
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/latest-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/historical-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/time-series-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/convert
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/currencies-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/ohlc-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/usage-json
- aid: openexchangerates:openexchangerates-historical-rates-api
  name: Open Exchange Rates Historical Rates API
  description: End-of-day rates for any date back to 1999-01-01.
  humanURL: https://docs.openexchangerates.org/reference/latest-json
  baseURL: https://openexchangerates.org/api
  tags:
  - Historical Rates
  properties:
  - type: OpenAPI
    url: openapi/openexchangerates-historical-rates-api-openapi.yml
  - type: Documentation
    url: https://docs.openexchangerates.org/reference/api-introduction
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/latest-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/historical-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/time-series-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/convert
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/currencies-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/ohlc-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/usage-json
- aid: openexchangerates:openexchangerates-latest-rates-api
  name: Open Exchange Rates Latest Rates API
  description: Current exchange rates relative to a base currency.
  humanURL: https://docs.openexchangerates.org/reference/latest-json
  baseURL: https://openexchangerates.org/api
  tags:
  - Latest Rates
  properties:
  - type: OpenAPI
    url: openapi/openexchangerates-latest-rates-api-openapi.yml
  - type: Documentation
    url: https://docs.openexchangerates.org/reference/api-introduction
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/latest-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/historical-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/time-series-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/convert
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/currencies-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/ohlc-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/usage-json
- aid: openexchangerates:openexchangerates-ohlc-api
  name: Open Exchange Rates OHLC API
  description: Open, high, low, close, and average rates for a period.
  humanURL: https://docs.openexchangerates.org/reference/latest-json
  baseURL: https://openexchangerates.org/api
  tags:
  - OHLC
  properties:
  - type: OpenAPI
    url: openapi/openexchangerates-ohlc-api-openapi.yml
  - type: Documentation
    url: https://docs.openexchangerates.org/reference/api-introduction
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/latest-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/historical-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/time-series-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/convert
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/currencies-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/ohlc-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/usage-json
- aid: openexchangerates:openexchangerates-time-series-api
  name: Open Exchange Rates Time Series API
  description: Bulk daily historical rates for a date range.
  humanURL: https://docs.openexchangerates.org/reference/latest-json
  baseURL: https://openexchangerates.org/api
  tags:
  - Time Series
  properties:
  - type: OpenAPI
    url: openapi/openexchangerates-time-series-api-openapi.yml
  - type: Documentation
    url: https://docs.openexchangerates.org/reference/api-introduction
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/latest-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/historical-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/time-series-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/convert
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/currencies-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/ohlc-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/usage-json
- aid: openexchangerates:openexchangerates-usage-api
  name: Open Exchange Rates Usage API
  description: Account plan and usage statistics.
  humanURL: https://docs.openexchangerates.org/reference/latest-json
  baseURL: https://openexchangerates.org/api
  tags:
  - Usage
  properties:
  - type: OpenAPI
    url: openapi/openexchangerates-usage-api-openapi.yml
  - type: Documentation
    url: https://docs.openexchangerates.org/reference/api-introduction
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/latest-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/historical-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/time-series-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/convert
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/currencies-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/ohlc-json
  - type: APIReference
    url: https://docs.openexchangerates.org/reference/usage-json
common:
- type: AgenticAccess
  url: agentic-access/openexchangerates-agentic-access.yml
- type: DomainSecurity
  url: security/openexchangerates-domain-security.yml
- type: Authentication
  url: authentication/openexchangerates-authentication.yml
- type: GitHubOrganization
  url: https://github.com/openexchangerates
- type: LinkedIn
  url: https://www.linkedin.com/company/open-exchange-rates
- type: Website
  url: https://openexchangerates.org
- type: Documentation
  url: https://docs.openexchangerates.org
- type: Pricing
  url: https://openexchangerates.org/signup
- type: Plans
  url: plans/openexchangerates-plans-pricing.yml
- type: RateLimits
  url: rate-limits/openexchangerates-rate-limits.yml
- type: FinOps
  url: finops/openexchangerates-finops.yml
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/open-exchange-rates/overview
- type: GitHubOrg
  url: https://github.com/openexchangerates
- type: StatusPage
  url: https://status.openexchangerates.org
- type: TermsOfService
  url: https://openexchangerates.org/terms
- type: PrivacyPolicy
  url: https://openexchangerates.org/privacy
- type: Support
  url: https://support.openexchangerates.org
- type: Contact
  url: https://openexchangerates.org/contact
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-merged-from:
- open-exchange-rates

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