CurrencyAPI

CurrencyAPI (currencyapi.com, an Everapi product) is a foreign exchange rate and currency conversion REST API delivering real-time and historical exchange rates for 150+ fiat currencies, precious metals, and cryptocurrencies. A single versioned API (base https://api.currencyapi.com/v3) covers latest rates, historical rates back to 1999, time-series ranges down to minute accuracy, value conversion, currency metadata, and account quota status - authenticated with a simple apikey header and backed by published monthly plans that start with a free tier.

CurrencyAPI publishes 6 API contracts indexed on the APIs.io network, including Convert API, Currencies API, Historical API, and 3 more. Tagged areas include Foreign Exchange, Currency, Exchange Rates, Currency Conversion, and Financial Data.

The CurrencyAPI catalog on APIs.io includes 1 Spectral governance ruleset.

CurrencyAPI’s developer surface includes authentication, documentation, API reference, pricing, and 10 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

29.8/100 thin ▬ flat Agent 26/100 agent aware Front door AI 1/6 silent saas Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Foreign Exchange Currency Exchange Rates Currency Conversion Financial Data

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 29.8/100 · thin

Contract Quality 10.8 / 21

Developer Ergonomics 4.9 / 17

Access Clarity 2.5 / 17

Operational Transparency 1.3 / 11

Contract Governance 1.4 / 10

Discoverability 5.6 / 9

Regulatory Posture 0.9 / 15

Agent readiness — 26/100 · agent aware

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

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented) Ask about this →
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks Ask about this →

6 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 14.9 — up to +17.0 composite points Ask about this →
Developer Ergonomics scores 28.6 — up to +14.3 composite points Ask about this →
Contract Quality scores 50.8 — up to +12.3 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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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 the provider profile at artifacts.apis.io/currencyapi/apis.yml: open an issue on github.com/api-evangelist/currencyapi to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 6

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

CurrencyAPI Convert API

Convert a value between currencies.

CurrencyAPI Currencies API

Supported currency metadata.

CurrencyAPI Historical API

End-of-day historical exchange rates back to 1999.

CurrencyAPI Latest API

Latest foreign exchange rates.

CurrencyAPI Range API

Time-series exchange rates for a datetime range.

CurrencyAPI Status API

API health and account quota status.

Open Collections 7

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

Currency Convert API

OPEN COLLECTION

Currency Convert Currencies API

OPEN COLLECTION

Currency Convert Historical API

OPEN COLLECTION

Currency Convert Latest API

OPEN COLLECTION

Currency Convert Range API

OPEN COLLECTION

Currency Convert Status API

OPEN COLLECTION

CurrencyAPI

OPEN COLLECTION

Scroll for all 7

CurrencyAPI pricing

Not yet checked against CurrencyAPI's own pricing page. Compiled by API Evangelist on 2026-07-11 from currencyapi.com/pricing; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free free	—
Small paid	—
Medium paid	—
Large paid	—
Custom enterprise	—

Plan details, limits and sources →

Rate limits

Free Plan Monthly Quota: 300 per month requests
Free Plan Minute Limit: 10 per minute requests
Small Plan Monthly Quota: 15000 per month requests

Compiled by API Evangelist, not yet checked against CurrencyAPI's documentation. All 6 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

CurrencyAPI Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

CurrencyAPI Rate Limits

6 limits

RATE LIMITS

FinOps 1

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

CurrencyAPI Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

CurrencyAPI API Rules

67 rules · 65 error-severity 1 warn-severity 1 info-severity

SPECTRAL

Security Posture 2

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

CurrencyAPI Authentication

apiKey · 2 schemes

SECURITY

CurrencyAPI Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access (API Evangelist recommendations) 1

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

CurrencyAPI Agentic Access

6 operations

6 operations · 0 acting

AGENTIC

Resources

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

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

LinkedIn

Website

Website

Other 1

Properties that don't map to a standard resource type

PublicAPIsListing

PublicAPIsListing

Source (apis.yml)

aid: currencyapi
url: https://raw.githubusercontent.com/api-evangelist/currencyapi/refs/heads/main/apis.yml
name: CurrencyAPI
kind: company
description: CurrencyAPI (currencyapi.com, an Everapi product) is a foreign exchange rate and currency conversion REST API
  delivering real-time and historical exchange rates for 150+ fiat currencies, precious metals, and cryptocurrencies. A single
  versioned API (base https://api.currencyapi.com/v3) covers latest rates, historical rates back to 1999, time-series ranges
  down to minute accuracy, value conversion, currency metadata, and account quota status - authenticated with a simple apikey
  header and backed by published monthly plans that start with a free tier.
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: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/currencyapi.png
tags:
- Foreign Exchange
- Currency
- Exchange Rates
- Currency Conversion
- Financial Data
tags_raw:
- Foreign Exchange
- Currency
- Exchange Rates
- FX
- Currency Conversion
- Financial Data
created: '2026-07-11'
modified: '2026-07-11'
specificationVersion: '0.23'
apis:
- aid: currencyapi:currencyapi-convert-api
  name: CurrencyAPI Convert API
  description: Convert a value between currencies.
  humanURL: https://currencyapi.com/docs/latest
  baseURL: https://api.currencyapi.com/v3
  tags:
  - Convert
  properties:
  - type: OpenAPI
    url: openapi/currencyapi-convert-api-openapi.yml
  - type: Documentation
    url: https://currencyapi.com/docs/latest
  - type: Documentation
    url: https://currencyapi.com/docs/historical
  - type: Documentation
    url: https://currencyapi.com/docs/range
  - type: Documentation
    url: https://currencyapi.com/docs/convert
  - type: Documentation
    url: https://currencyapi.com/docs/currencies
  - type: Documentation
    url: https://currencyapi.com/docs/status
- aid: currencyapi:currencyapi-currencies-api
  name: CurrencyAPI Currencies API
  description: Supported currency metadata.
  humanURL: https://currencyapi.com/docs/latest
  baseURL: https://api.currencyapi.com/v3
  tags:
  - Currency
  tags_raw:
  - Currencies
  properties:
  - type: OpenAPI
    url: openapi/currencyapi-currencies-api-openapi.yml
  - type: Documentation
    url: https://currencyapi.com/docs/latest
  - type: Documentation
    url: https://currencyapi.com/docs/historical
  - type: Documentation
    url: https://currencyapi.com/docs/range
  - type: Documentation
    url: https://currencyapi.com/docs/convert
  - type: Documentation
    url: https://currencyapi.com/docs/currencies
  - type: Documentation
    url: https://currencyapi.com/docs/status
- aid: currencyapi:currencyapi-historical-api
  name: CurrencyAPI Historical API
  description: End-of-day historical exchange rates back to 1999.
  humanURL: https://currencyapi.com/docs/latest
  baseURL: https://api.currencyapi.com/v3
  tags:
  - Historical
  properties:
  - type: OpenAPI
    url: openapi/currencyapi-historical-api-openapi.yml
  - type: Documentation
    url: https://currencyapi.com/docs/latest
  - type: Documentation
    url: https://currencyapi.com/docs/historical
  - type: Documentation
    url: https://currencyapi.com/docs/range
  - type: Documentation
    url: https://currencyapi.com/docs/convert
  - type: Documentation
    url: https://currencyapi.com/docs/currencies
  - type: Documentation
    url: https://currencyapi.com/docs/status
- aid: currencyapi:currencyapi-latest-api
  name: CurrencyAPI Latest API
  description: Latest foreign exchange rates.
  humanURL: https://currencyapi.com/docs/latest
  baseURL: https://api.currencyapi.com/v3
  tags:
  - Latest
  properties:
  - type: OpenAPI
    url: openapi/currencyapi-latest-api-openapi.yml
  - type: Documentation
    url: https://currencyapi.com/docs/latest
  - type: Documentation
    url: https://currencyapi.com/docs/historical
  - type: Documentation
    url: https://currencyapi.com/docs/range
  - type: Documentation
    url: https://currencyapi.com/docs/convert
  - type: Documentation
    url: https://currencyapi.com/docs/currencies
  - type: Documentation
    url: https://currencyapi.com/docs/status
- aid: currencyapi:currencyapi-range-api
  name: CurrencyAPI Range API
  description: Time-series exchange rates for a datetime range.
  humanURL: https://currencyapi.com/docs/latest
  baseURL: https://api.currencyapi.com/v3
  tags:
  - Range
  properties:
  - type: OpenAPI
    url: openapi/currencyapi-range-api-openapi.yml
  - type: Documentation
    url: https://currencyapi.com/docs/latest
  - type: Documentation
    url: https://currencyapi.com/docs/historical
  - type: Documentation
    url: https://currencyapi.com/docs/range
  - type: Documentation
    url: https://currencyapi.com/docs/convert
  - type: Documentation
    url: https://currencyapi.com/docs/currencies
  - type: Documentation
    url: https://currencyapi.com/docs/status
- aid: currencyapi:currencyapi-status-api
  name: CurrencyAPI Status API
  description: API health and account quota status.
  humanURL: https://currencyapi.com/docs/latest
  baseURL: https://api.currencyapi.com/v3
  tags:
  - Status
  properties:
  - type: OpenAPI
    url: openapi/currencyapi-status-api-openapi.yml
  - type: Documentation
    url: https://currencyapi.com/docs/latest
  - type: Documentation
    url: https://currencyapi.com/docs/historical
  - type: Documentation
    url: https://currencyapi.com/docs/range
  - type: Documentation
    url: https://currencyapi.com/docs/convert
  - type: Documentation
    url: https://currencyapi.com/docs/currencies
  - type: Documentation
    url: https://currencyapi.com/docs/status
common:
- type: PublicAPIsListing
  url: https://github.com/public-apis/public-apis
- type: AgenticAccess
  url: agentic-access/currencyapi-agentic-access.yml
- type: DomainSecurity
  url: security/currencyapi-domain-security.yml
- type: Authentication
  url: authentication/currencyapi-authentication.yml
- type: GitHubOrganization
  url: https://github.com/everapihq
- type: LinkedIn
  url: https://www.linkedin.com/company/everapi
- type: Website
  url: https://currencyapi.com
- type: Documentation
  url: https://currencyapi.com/docs
- type: APIReference
  url: https://currencyapi.com/docs/latest
- type: Authentication
  url: https://currencyapi.com/docs/authentication
- type: Pricing
  url: https://currencyapi.com/pricing
- type: Plans
  url: plans/currencyapi-plans-pricing.yml
- type: RateLimits
  url: rate-limits/currencyapi-rate-limits.yml
- type: FinOps
  url: finops/currencyapi-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

CurrencyAPI — frequently asked questions

Does CurrencyAPI have an API?

Yes. APIs.io lists 6 APIs from CurrencyAPI, including CurrencyAPI Convert API, CurrencyAPI Currencies API and CurrencyAPI Historical API, and 3 more.

Is there an OpenAPI specification for the CurrencyAPI?

Yes. APIs.io indexes 6 OpenAPI specifications for CurrencyAPI, each linked for download from this page.

How do I authenticate with the CurrencyAPI?

CurrencyAPI uses bearer-token authentication (apiKey · 2 schemes). The details are profiled on APIs.io as CurrencyAPI Authentication.

How much does the CurrencyAPI cost?

APIs.io lists 5 pricing plans for CurrencyAPI, with each plan's price, limits and inclusions under Pricing on this page.

Is the CurrencyAPI ready for AI agents?

CurrencyAPI has a Kin Score of 29.8 out of 100 (thin) and an Agent Readiness score of 25.5 (agent-aware), scored by API Evangelist on 2026-11-13.

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