# JPX (Japan Exchange Group)

**Canonical:** https://apis.io/providers/jpx/  
**Website:** https://www.jpx.co.jp/english/  
**APIs profiled:** 8

JPX (Japan Exchange Group) operates the Tokyo Stock Exchange, Osaka Exchange, and Tokyo Commodity Exchange, and sells Japanese market data through its JPX Market Innovation & Research arm. Its developer-facing product is the J-Quants API - a self-serve, subscription REST API (Free/Light/Standard/Premium plans, x-api-key auth, base https://api.jquants.com/v2) delivering historical equities OHLCV/minute/tick bars, indices, derivatives, financial statements, short-selling and margin data, EDINET filings, and TDnet disclosures, plus bulk CSV download, an MCP server, and a CLI - licensed to individual investors only. Institutional real-time data (FLEX Standard and FLEX MBO order-book feeds) and corporate historical data (J-Quants Pro via API/SFTP/Snowflake, J-Quants DataCube) are sales-gated services.

## Kin Score — 51.0 / 100 (developing)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 51.0).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 0.0 |
| Governance | 12.5 |
| Operational Transparency | 76.3 |
| Developer Ergonomics | 80.4 |
| Commercial Clarity | 76.3 |

Regulatory layer — **Securities & Market Data**: 51.7 (matched via tags).

## Agent readiness — 31.1 (agent-aware)

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

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (8)

- **J-Quants Equities API** — Listed issue master, daily and morning-session OHLCV, minute bars and tick trades (add-on), earnings calendar, and weekly trading by investor type for Tokyo Stock Exchange equit...
- **J-Quants Markets API** — Market-structure datasets under /v2/markets/* - trading calendar, short sale position reports, short ratio by sector, weekly margin interest, daily margin alerts, and breakdown ...
- **J-Quants Indices API** — Daily OHLC for TOPIX and other JPX indices under /v2/indices/* endpoints, with plan-gated access (TOPIX from Light, full index set from Standard).
- **J-Quants Financials API** — Corporate financial data under /v2/fins/* - summary report figures (EPS, forecasts), detailed BS/PL/CF statements, and cash dividend data sourced from TDnet disclosures.
- **J-Quants Derivatives API** — Daily OHLC for Osaka Exchange futures and options under /v2/derivatives/*, including Nikkei 225 options (Standard plan) and the full futures/options universe (Premium plan).
- **J-Quants EDINET Data API** — Structured data extracted from EDINET regulatory filings under /v2/edinet/* - major shareholders, cross-shareholdings (policy holdings), and large volume holding reports.
- **J-Quants TDnet Disclosure API** — Add-on access to TDnet timely-disclosure documents - a disclosure index (/td/list), document file retrieval (/td/files), and bulk CSV download (/td/bulk) covering five years of ...
- **J-Quants Bulk Download API** — File-based delivery alongside the REST endpoints - list available bulk files (/bulk/list) and download gzipped CSV extracts (/bulk/get) for supported datasets.

## MCP servers (1)

- **jpx-mcp.yml**

## Security (2)

- **Jpx Authentication** — apiKey · 1 scheme
- **Jpx Domain Security** — TLSv1.2 · HSTS · DMARC

## Plans (1)

- **Jpx Plans**

## Tags

Financial, Market Data, Stocks, Exchange, Trading, Derivatives, Indices, Reference Data, Japan

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