# Free Currency API

**Canonical:** https://apis.io/providers/freecurrencyapi/  
**Website:** https://freecurrencyapi.com/  
**APIs profiled:** 3

Free Currency API provides real-time and historical currency exchange rate data for 150+ currencies via a simple REST API. No registration is required for basic usage, making it ideal for hobby and development projects. The API offers daily-updated current exchange rates, historical rates dating back to 1999, and multi-currency support with official SDKs for JavaScript, Python, PHP, Go, Ruby, Rust, C#, and R.

## Kin Score — 40.6 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 40.6).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 61.5 |
| Governance | 9.8 |
| Contract Governance | 9.8 |
| Operational Transparency | 34.2 |
| Developer Ergonomics | 21.4 |
| Commercial Clarity | 39.5 |
| Access Clarity | 39.5 |

## Agent readiness — 45.4 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | na |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | na |
| Error Semantics | no |
| OpenAPI Examples | verified |
| Rate Limit Signal | verified |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | na |

## Access

Freemium · Open access — onboarding: open, pricing: freemium, trial: no (confidence: high).

## APIs (3)

- **Free Currency API Currencies API** — Available currency information
- **Free Currency API Exchange Rates API** — Current and historical exchange rate data
- **Free Currency API Status API** — API quota and status information

## Agentic access (1)

- **Freecurrencyapi Agentic Access** — 4 operations

## Security (2)

- **Freecurrencyapi Authentication** — apiKey · 2 schemes
- **Freecurrencyapi Domain Security** — TLSv1.3 · DMARC

## Plans (1)

- **Freecurrencyapi Plans Pricing**

## Tags

Currency, Exchange Rates, Finance, Historical Data, Free

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/freecurrencyapi/). Scores are computed from the provider's own public artifacts under a published rubric.