# FCS API

**Canonical:** https://apis.io/providers/fcsapi/  
**Website:** https://fcsapi.com/  
**APIs profiled:** 4

FCS API provides free and fast access to Forex, cryptocurrency, and stock market data through a simple REST and WebSocket API. It offers real-time and historical rates, technical indicators, and charting data for developers building trading, analytics, or financial applications. The service includes extensive documentation, pricing tiers, and a developer portal for easy integration.

## Kin Score — 31.2 / 100 (thin)

Scored 2026-11-06 under rubric 0.27.0. Trend: falling (-9.6 from 40.8).

| Facet | Score |
|---|---|
| Discoverability | 78.6 |
| Contract Quality | 24.7 |
| Contract Governance | 22.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 22.6 |
| Access Clarity | 53.9 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 14.7 (matched via fallback).

## Agent readiness — 15.1 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | partial |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |
| Pagination Ratio | na |
| Operation Distinctiveness | no |
| MCP Tool Quality | na |

## Access

Freemium — onboarding: unknown, pricing: freemium, trial: no (confidence: low).

## APIs (4)

- **FCS API** — Free and fast access to Forex, cryptocurrency, and stock market data via REST and WebSocket endpoints.
- **FCS API Forex API** — The Forex API from FCS API — 3 operation(s) for forex.
- **FCS API Raw API** — The Raw API from FCS API — 1 operation(s) for raw.
- **FCS API Stock API** — The Stock API from FCS API — 6 operation(s) for stock.

## Security (1)

- **Fcsapi Domain Security** — TLSv1.3 · HSTS

## Plans (1)

- **Fcsapi Plans Pricing**

## Tags

Finance, Foreign Exchange, Cryptocurrency, Stocks, Data API

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