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J-Quants offers tiered market data access; XBRL parsing needed for deep analysis

By PulseAugur Editorial · [1 sources] ·

The J-Quants product from Japan Exchange Group offers tiered access to Japanese market data, with a generous free plan suitable for basic company screening and price history retrieval. However, for agents requiring detailed financial statements like balance sheets, profit and loss statements, or dividend data, a premium subscription is necessary. For agents needing granular, element-level XBRL data from filings, a separate solution that parses EDINET XBRL and TDnet disclosures is required, offering a more detailed view than J-Quants provides. AI

IMPACT Provides clarity on data access for AI agents needing Japanese market information, guiding developers on choosing between official data feeds and specialized parsing solutions.

RANK_REASON The item discusses a specific data product and its limitations for AI agents, rather than a new release or significant industry event.

Read on dev.to — MCP tag →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

J-Quants offers tiered market data access; XBRL parsing needed for deep analysis

How we ranked this

Signal score
33 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Tool
The item discusses a specific data product and its limitations for AI agents, rather than a new release or significant industry event.
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Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
Topics
product, infra
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High
Clearly on-topic for AI-industry coverage.
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Breaking (< 6h)
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Full methodology in our editorial standards.

COVERAGE [1]

  1. dev.to — MCP tag TIER_1 English(EN) · Ikkun ·

    J-Quants for agents: what it covers, and when you need more

    <h2> The short answer </h2> <p>J-Quants is the official JPX product for Japanese market data, and for most agents it is the right first call. It is operated by the exchange, it is priced for individuals, and since December 2025 it authenticates with a plain API key instead of a t…

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