proposal-prep

proposal-prep is a command for Claude Code from Kokai-Data/japan-business-data. It costs 28 tokens per session (214 once invoked), scanned A, original, Apache-2.0.

A command that prepares a one-page Japanese company proposal brief from a corporate number or company name.

In plain words
What is it for?
Summarising a company's business, recent grants or awards, possible support needs, and relevant authority information, with cited sources.
Why use it?
It gathers company details and recent public signals into a fixed format, reducing the manual work needed to prepare an initial proposal.

Command 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 Summarising a company's business, recent grants or awards, possible support needs, and…

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/kokai-data/japan-business-data/proposal-prep
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.

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 proposal-prep

README.md
[![agentmods](https://agentmods.dev/badge/commands/kokai-data/japan-business-data/proposal-prep.svg)](https://agentmods.dev/commands/kokai-data/japan-business-data/proposal-prep)
Your own site
<a href="https://agentmods.dev/commands/kokai-data/japan-business-data/proposal-prep"><img src="https://agentmods.dev/badge/commands/kokai-data/japan-business-data/proposal-prep.svg" alt="Measured on agentmods" height="20"></a>
Per session 28 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 214 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 $0.00028 $0.00214
Opus 5 $0.00014 $0.00107
Sonnet 5 $0.00006 $0.00043
Haiku 4.5 $0.00003 $0.00021

Measured 6d ago against content hash d1cfbf3082af, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

proposal-prep 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 6d 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/commands/proposal-prep.md · 27 lines

What it actually says

/proposal-prep

Run the proposal-prep-jp agent workflow on the provided Japanese company.

Argument: 13-digit 法人番号 (corporate number) OR company name.

If a company name is provided, the agent will call search_company first to confirm the corporate number with the user.

Usage:

  • /proposal-prep <13-digit 法人番号> (direct, fastest)
  • /proposal-prep <company name> (search candidates, then user confirms)

The brief includes:

  • Header: company name + 法人番号
  • 事業概要 (cited from gBizINFO records)
  • 直近トピック (cited from J-Grants subsidies, certifications, awards)
  • 支援ニーズ仮説 (cited from subsidy landscape signals)
  • 4-layer authority strip
  • 士業 boundary disclaimer
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. 6d ago First seen · 27 lines · 28 tokens per session scan A d1cfbf3082af

Subscribe to this mod's changes

proposal-prep is a command published in the GitHub repository Kokai-Data/japan-business-data (2 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 28 tokens to every session and 214 once invoked, about $0.0001 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.