UniRate API

The UniRate API provides current foreign-exchange rates, currency conversion, a list of supported currencies, and country VAT rates over a simple REST interface. Current-rate endpoints are available on a free, self-serve tier (get a key at https://unirateapi.com); historical, precious-metals and commodities endpoints require a Pro subscription. Open-source client libraries are published for Python, Node/TypeScript, Go, Rust, Ruby, PHP, Java, Swift, .NET and more, plus an official MCP server for AI agents.

UniRate API publishes 4 API contracts indexed on the APIs.io network, including Commodity API, Currency API, Historical Currency API, and 1 more. Tagged areas include Currency, Exchange Rates, Foreign Exchange, Currency Conversion, and VAT.

UniRate API’s developer surface includes authentication, CLI, developer portal, pricing, signup flow, engineering blog, and 16 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

51.0/100 developing ▬ flat Agent 30/100 agent ready Front door AI 1/6 silent Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

2 published contracts 1 MCP Servers 2 Agent Skills

Currency Exchange Rates Foreign Exchange Currency Conversion VAT Finance Financial Data

What this lets a business do 2

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Data & Reference Information Services

AE-230

CurrencyHistorical Currency

GET /api/rates GET /api/convert GET /api/currencies GET /api/historical/rates

Tax Management

BC-220

VAT Rates

GET /api/vat/rates

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 51.0/100 · developing

Contract Quality 10.0 / 21

Developer Ergonomics 9.6 / 17

Access Clarity 12.5 / 17

Operational Transparency 4.1 / 11

Contract Governance 0.5 / 10

Discoverability 5.5 / 9

Regulatory Posture 3.7 / 15

Agent readiness — 30/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 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 5 / 5

Distinct Operations 3 / 3

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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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):

Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
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)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks

6 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 47.1 — up to +13.2 composite points
Contract Governance scores 4.5 — up to +11.5 composite points
Developer Ergonomics scores 56.5 — up to +8.7 composite points

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.

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/unirateapi/apis.yml: open an issue on github.com/api-evangelist/unirateapi 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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
E-invoicing and Tax Compliance (certified operators)	long-tail	6.5 (thin)	-	-
Obsidian Community Plugins (third-party APIs the Obsidian plugin ecosystem integrates)	long-tail	6.5 (thin)	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

APIs 4

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

UniRate API Commodity API

Precious metals prices (Gold, Silver, Platinum, Palladium) - Pro subscription required

UniRate API Currency API

Current exchange rates and conversion operations

UniRate API Historical Currency API

Historical exchange rates data (1999-2026)

UniRate API VAT Rates API

The VAT Rates API from UniRate API — 1 operation(s) for vat rates.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

UniRate MCP Server

Official Model Context Protocol server for the UniRate API. Gives MCP-compatible AI assistants (Claude Desktop, Cursor, Continue, Cline) a typed, currency-aware tool surface ove...

MCP SERVER

Agent Skills 2

Packaged agent skills for driving this provider's APIs from an AI assistant.

unirateapi-convert-currency

AGENT SKILL

unirateapi-historical-timeseries

AGENT SKILL

Pricing Plans 2

Published pricing tiers and plan structures.

Unirateapi Plans Pricing

2 plans

PLANS

Unirateapi Price Estimates

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Unirateapi Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

Unirateapi Finops

FINOPS

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Unirateapi Openapi Overlay

6 actions · update · unirateapi-openapi.yaml

GENERATED

Security Posture 2

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

Unirateapi Authentication

apiKey · 1 scheme

SECURITY

Unirateapi Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

Portal

Portal

SignUp

SignUp

Login

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

MCPServer

MCPServer

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Build 4

SDKs, sample code, and the tooling you integrate with

Packages

SDKs

CLI

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 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 3

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

APIsJSON

APIsJSON

Source (apis.yml)

aid: unirateapi
name: UniRate API
description: The UniRate API provides current foreign-exchange rates, currency conversion, a list of supported currencies,
  and country VAT rates over a simple REST interface. Current-rate endpoints are available on a free, self-serve tier (get
  a key at https://unirateapi.com); historical, precious-metals and commodities endpoints require a Pro subscription. Open-source
  client libraries are published for Python, Node/TypeScript, Go, Rust, Ruby, PHP, Java, Swift, .NET and more, plus an official
  MCP server for AI agents.
type: Index
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
url: https://raw.githubusercontent.com/api-evangelist/unirateapi/refs/heads/main/apis.yml
created: '2026-09-16'
modified: '2026-09-16'
tags:
- Currency
- Exchange Rates
- Foreign Exchange
- Currency Conversion
- VAT
- Finance
- Financial Data
tags_raw:
- Currency
- Exchange Rates
- Foreign Exchange
- Forex
- Currency Conversion
- VAT
- Finance
- Financial Data
apis:
- aid: unirateapi:unirateapi-commodity-api
  name: UniRate API Commodity API
  description: Precious metals prices (Gold, Silver, Platinum, Palladium) - Pro subscription required
  humanURL: https://unirateapi.com
  baseURL: https://api.unirateapi.com
  tags:
  - Commodity
  properties:
  - type: OpenAPI
    url: openapi/unirateapi-commodity-api-openapi.yml
  - type: ToolCrosswalk
    url: mcp/unirateapi-tool-crosswalk.yml
  - type: Plans
    url: plans/unirateapi-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/unirateapi-rate-limits.yml
  - type: ErrorCatalog
    url: errors/unirateapi-problem-types.yml
  - type: Lifecycle
    url: lifecycle/unirateapi-lifecycle.yml
  - type: Conventions
    url: conventions/unirateapi-conventions.yml
  - type: DataModel
    url: data-model/unirateapi-data-model.yml
  - type: Conformance
    url: conformance/unirateapi-conformance.yml
  - type: Components
    url: components/unirateapi-components.yml
  - type: Documentation
    url: https://unirateapi.com/apidocs/
  - type: APIReference
    url: https://unirateapi.com/apidocs/
- aid: unirateapi:unirateapi-currency-api
  name: UniRate API Currency API
  description: Current exchange rates and conversion operations
  humanURL: https://unirateapi.com
  baseURL: https://api.unirateapi.com
  tags:
  - Currency
  properties:
  - type: OpenAPI
    url: openapi/unirateapi-currency-api-openapi.yml
  - type: ToolCrosswalk
    url: mcp/unirateapi-tool-crosswalk.yml
  - type: Plans
    url: plans/unirateapi-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/unirateapi-rate-limits.yml
  - type: ErrorCatalog
    url: errors/unirateapi-problem-types.yml
  - type: Lifecycle
    url: lifecycle/unirateapi-lifecycle.yml
  - type: Conventions
    url: conventions/unirateapi-conventions.yml
  - type: DataModel
    url: data-model/unirateapi-data-model.yml
  - type: Conformance
    url: conformance/unirateapi-conformance.yml
  - type: Components
    url: components/unirateapi-components.yml
  - type: Documentation
    url: https://unirateapi.com/apidocs/
  - type: APIReference
    url: https://unirateapi.com/apidocs/
- aid: unirateapi:unirateapi-historical-currency-api
  name: UniRate API Historical Currency API
  description: Historical exchange rates data (1999-2026)
  humanURL: https://unirateapi.com
  baseURL: https://api.unirateapi.com
  tags:
  - Historical Currency
  properties:
  - type: OpenAPI
    url: openapi/unirateapi-historical-currency-api-openapi.yml
  - type: ToolCrosswalk
    url: mcp/unirateapi-tool-crosswalk.yml
  - type: Plans
    url: plans/unirateapi-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/unirateapi-rate-limits.yml
  - type: ErrorCatalog
    url: errors/unirateapi-problem-types.yml
  - type: Lifecycle
    url: lifecycle/unirateapi-lifecycle.yml
  - type: Conventions
    url: conventions/unirateapi-conventions.yml
  - type: DataModel
    url: data-model/unirateapi-data-model.yml
  - type: Conformance
    url: conformance/unirateapi-conformance.yml
  - type: Components
    url: components/unirateapi-components.yml
  - type: Documentation
    url: https://unirateapi.com/apidocs/
  - type: APIReference
    url: https://unirateapi.com/apidocs/
- aid: unirateapi:unirateapi-vat-rates-api
  name: UniRate API VAT Rates API
  description: The VAT Rates API from UniRate API — 1 operation(s) for vat rates.
  humanURL: https://unirateapi.com
  baseURL: https://api.unirateapi.com
  tags:
  - VAT Rates
  properties:
  - type: OpenAPI
    url: openapi/unirateapi-vat-rates-api-openapi.yml
  - type: ToolCrosswalk
    url: mcp/unirateapi-tool-crosswalk.yml
  - type: Plans
    url: plans/unirateapi-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/unirateapi-rate-limits.yml
  - type: ErrorCatalog
    url: errors/unirateapi-problem-types.yml
  - type: Lifecycle
    url: lifecycle/unirateapi-lifecycle.yml
  - type: Conventions
    url: conventions/unirateapi-conventions.yml
  - type: DataModel
    url: data-model/unirateapi-data-model.yml
  - type: Conformance
    url: conformance/unirateapi-conformance.yml
  - type: Components
    url: components/unirateapi-components.yml
  - type: Documentation
    url: https://unirateapi.com/apidocs/
  - type: APIReference
    url: https://unirateapi.com/apidocs/
common:
- type: Plans
  url: plans/unirateapi-plans-pricing.yml
- type: RateLimits
  url: rate-limits/unirateapi-rate-limits.yml
- type: CapabilityMap
  url: capabilities/unirateapi-capability-edges.yml
  name: UniRate API Business Capability Map
- type: Overlay
  url: overlays/unirateapi-openapi-overlay.yaml
- type: MCPServer
  url: mcp/unirateapi-mcp.yml
- type: DomainSecurity
  url: security/unirateapi-domain-security.yml
- type: Authentication
  url: authentication/unirateapi-authentication.yml
- type: Packages
  url: packages/unirateapi-packages.yml
- type: SDKs
  url: packages/unirateapi-packages.yml
- type: CLI
  url: cli/unirateapi-cli.yml
- type: LLMsTxt
  url: llms/unirateapi-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: Website
  url: https://unirateapi.com
- type: Portal
  url: https://unirateapi.com
- type: Pricing
  url: https://unirateapi.com/pricing
- type: SignUp
  url: https://unirateapi.com/register
- type: Login
  url: https://unirateapi.com/login
- type: TermsOfService
  url: https://unirateapi.com/terms
- type: PrivacyPolicy
  url: https://unirateapi.com/privacy
- type: Blog
  url: https://unirateapi.com/articles/
- type: APIsJSON
  url: https://raw.githubusercontent.com/UniRate-API/openapi/main/apis.json
- type: GitHubOrg
  url: https://github.com/UniRate-API
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-09-16'
  status: enriched
  artifacts_added: 23
  pass: local-v3

UniRate API — frequently asked questions

Does UniRate API have an API?

Yes. APIs.io lists 4 APIs from UniRate API, including UniRate API Commodity API, UniRate API Currency API and UniRate API Historical Currency API, and 1 more.

Is there an OpenAPI specification for the UniRate API?

Yes. APIs.io indexes 4 OpenAPI specifications for UniRate API, each linked for download from this page.

How do I authenticate with the UniRate API?

UniRate API uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Unirateapi Authentication.

How much does the UniRate API cost?

APIs.io lists 2 pricing plans for UniRate API, with each plan's price, limits and inclusions under Pricing Plans on this page.

Does UniRate API have an MCP server?

Yes. APIs.io lists 1 MCP server for UniRate API: Official Model Context Protocol server for the UniRate API. Gives MCP-compatible AI assistants (Claude Desktop, Cursor, Continue, Cline) a typed, currency-aware tool surface over UniRate's currency co

Is the UniRate API ready for AI agents?

UniRate API has a Kin Score of 51.0 out of 100 (developing) and an Agent Readiness score of 29.6 (agent-ready), scored by API Evangelist on 2026-10-31.

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