edinet-company-ir-tracker

edinet-company-ir-tracker is a skill for Claude Code from Kokai-Data/japan-business-data. It costs 115 tokens per session (1,365 once invoked), scanned A, original, Apache-2.0.

A workflow for retrieving recent filings from Japan’s EDINET system, the government database for corporate disclosures, for one Japanese company. It groups filings into areas such as financial reports, takeovers, ownership, governance, and events.

In plain words
What is it for?
Use it for M&A target research, investment review, and preparing diligence discussions from a company’s recent disclosures.
Why use it?
It turns a long list of company filings into grouped signals for reviewing a company’s recent activity.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the kokai-data plugin — 19 skills, 8 commands, 7 agents, 1 MCP server shipped together

Good fit Use it for M&A target research, investment review, and preparing diligence discussions from a company’s recent disclosures.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/kokai-data/japan-business-data/edinet-company-ir-tracker
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Kokai-Data/japan-business-data --skill edinet-company-ir-tracker
Clone the repo
git clone --depth 1 https://github.com/Kokai-Data/japan-business-data

Made for: Claude Code.

Or install kokai-data, the plugin that ships this one along with the rest of its 19 skills, 8 commands, 7 agents, 1 MCP server.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for edinet-company-ir-tracker

README.md
[![agentmods](https://agentmods.dev/badge/skills/kokai-data/japan-business-data/edinet-company-ir-tracker/github.svg)](https://agentmods.dev/skills/kokai-data/japan-business-data/edinet-company-ir-tracker)
Your own site
<a href="https://agentmods.dev/skills/kokai-data/japan-business-data/edinet-company-ir-tracker"><img src="https://agentmods.dev/badge/skills/kokai-data/japan-business-data/edinet-company-ir-tracker/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for edinet-company-ir-tracker

Your own site · 80×15
<a href="https://agentmods.dev/skills/kokai-data/japan-business-data/edinet-company-ir-tracker"><img src="https://agentmods.dev/badge/skills/kokai-data/japan-business-data/edinet-company-ir-tracker.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 115 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,365 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00115 $0.01365
Opus 5 $0.00057 $0.00682
Sonnet 5 $0.00023 $0.00273
Haiku 4.5 $0.00012 $0.00136

Measured 12d ago against content hash 2788d8b16ccb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

edinet-company-ir-tracker scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/vertical-plugins/kokai-data/skills/edinet-company-ir-tracker/SKILL.md · 92 lines

How it starts

The opening of the file, as written. The whole thing — 92 lines — stays where its author put it; the contents beside it link to each section on GitHub.

When to use

Use this skill when:

  • The user provides a 法人番号 (13-digit) and you want to see if the company is listed + all their recent IR activity in one call.
  • You're prepping for an M&A target call and need a fast cluster view of annual / quarterly / TOB / large-shareholding / governance disclosures.
  • Investor / analyst use case: monitor a portfolio company's filings clustered by signal type.
  • You want Kokai signal overlay (not raw EDINET timeline) — clustered into actionable groups instead of a flat list.

How to invoke

Call the kokai MCP server's get_edinet_company_disclosures tool:

{
  "name": "get_edinet_company_disclosures",
  "arguments": {
    "corporateNumber": "<13-digit 法人番号>",
    "edinetCode": "<E12345 form, alternative to corporateNumber>",
    "lookbackDays": 30,
    "limit": 50
  }
}
  • corporateNumber OR edinetCode (one required). If both, edinetCode wins (skips resolver).
  • lookbackDays: default 30, max 90 (auto-clamped). Phase 2 will extend to 365 once EDINET code master is imported.
  • limit: default 50, max 100.

Output structure

{
  "corporateNumber": "...",
  "edinetCode": "E12345",
  "filerName": "...",
  "resolveStatus": "resolved",
  "documents": [/* all recent docs, submitDateTime desc */],
  "signal": {
    "annualReports": [/* 有価証券報告書 (docTypeCode=120, 130) */],
    "quarterlyReports": [/* 四半期 (140, 150) + 半期 (160, 170) */],
    "largeHolderReports": [/* 大量保有 (350, 360) */],
    "tobReports": [/* TOB (240-320) */],
    "correctionReports": [/* 訂正 (130, 150, 170, 190, etc.) */],
    "governanceReports": [/* 内部統制 (235, 236) */],
    "eventDisclosures": [/* 臨時報告書 (180, 190) */]
  },
  "source_authority": "official",
  "attribution_text": "出典: 金融庁 EDINET"
}

resolveStatus values

  • "resolved": 法人番号 → EDINET code 解決成功、上場企業確認
  • "unresolved": 法人番号 を渡したが lookback 内 IR なし or 上場企業でない (empty signal、200 で graceful degrade)
  • "skipped": edinetCode を直接渡したので resolver は skip

Read the full file on GitHub · 92 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 92 lines · 0 tokens per session scan A 2788d8b16ccb

Subscribe to this mod's changes

edinet-company-ir-tracker is a skill published in the GitHub repository Kokai-Data/japan-business-data (2 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 115 tokens to every session and 1,365 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.