What is datoon CLAUDE.md?

Repository instructions for datoon, a tool that converts suitable JSON data into TOON, a more compact format for language-model workloads. They describe which files are authoritative and which generated files mirror them.

Use them when developing, testing, documenting, or maintaining the datoon JSON-to-TOON gateway and its related packages and plugins.

They help coding agents change the correct source files and keep the Python package, command-line tools, plugins, documentation, and generated copies consistent.

How andrii-su/datoon configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to andrii-su/datoon. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/andrii-su/datoon/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/andrii-su/datoon

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/andrii-su/datoon/claude-md/github.svg)](https://agentmods.dev/instructions/andrii-su/datoon/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/andrii-su/datoon/claude-md"><img src="https://agentmods.dev/badge/instructions/andrii-su/datoon/claude-md/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/andrii-su/datoon/claude-md"><img src="https://agentmods.dev/badge/instructions/andrii-su/datoon/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,617 This file is loaded in full into every session.

When invoked 1,617 The same file — it is already loaded in full.

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.

Model	Per session	Once invoked
Fable 5.1	$0.01617	$0.01617
Opus 5.5	$0.00647	$0.00647
Sonnet 5.5	$0.00323	$0.00323
Haiku 4.5	$0.00162	$0.00162

Measured 2mo ago against content hash 1890e79c7fe6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

datoon CLAUDE.md 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 2mo 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.

CLAUDE.md · 176 lines

How it starts

The opening of the file, as written. The whole thing — 176 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md - datoon

This file is the maintainer guide for agents working in this repository. It explains source-of-truth files, generated mirrors, and checks that must stay green.

Project Overview

datoon is a smart JSON-to-TOON gateway for LLM data workloads. It converts structured JSON only when the payload is a good TOON candidate and estimated token savings clear the configured threshold.

It ships as:

Python package under src/datoon/;
CLI command datoon;
MCP server command datoon-mcp;
Claude Code plugin metadata under .claude-plugin/;
Codex plugin under plugins/datoon/;
standalone skill artifact datoon.skill;
docs and benchmarks.

Repository Layout

datoon/
├── README.md                         # Product overview and benchmark summary
├── INSTALL.md                        # User install guide
├── CONTRIBUTING.md                   # Contributor workflow
├── CLAUDE.md                         # Maintainer guide for agents
├── SECURITY.md
├── pyproject.toml
├── uv.lock
│
├── src/datoon/                       # Python package source
│   ├── analyzer.py                   # Payload structure suitability checks
│   ├── converter.py                  # JSON normalization, TOON CLI call, policy gating
│   ├── models.py                     # Config/report/outcome dataclasses
│   ├── cli.py                        # CLI entrypoint
│   └── mcp_server.py                 # MCP server tools
│
├── skills/datoon/                    # Skill source of truth
│   ├── SKILL.md                      # LLM-facing behavior
│   └── README.md                     # Human-facing skill docs
│
├── SKILL.md                          # Mirrored skill copy
├── datoon/SKILL.md                   # Mirrored skill copy for .skill layout
├── plugins/datoon/                   # Codex plugin distribution
├── datoon.skill                      # ZIP artifact containing datoon/SKILL.md
│
├── benchmarks/
│   ├── payloads.json                 # Main benchmark payload config
│   ├── run.py                        # JSON/TOON efficiency benchmark
│   └── agent_skill_eval/             # Saved subagent evaluation artifacts
│
├── scripts/
│   ├── validate_skill_sync.py        # Mirror/archive consistency check
│   ├── ab_skill_benchmark.py         # Claude CLI A/B benchmark harness
│   └── summarize_agent_skill_eval.py # Summarizes saved subagent artifacts
│
├── tests/                            # Unit and integration tests
├── docs/                             # Static docs site
└── .github/workflows/                # CI, release, publish, skill sync

Read the full file on GitHub · 176 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.

2mo ago First seen · 176 lines · 1,617 tokens per session scan A 1890e79c7fe6

Subscribe to this mod's changes

datoon CLAUDE.md is an instructions file published in the GitHub repository andrii-su/datoon (2 stars, last pushed 2d ago), licensed MIT. It adds 1,617 tokens to every session, about $0.0065 per session on Opus 5.5. 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.

LLM claude codex data skill toon

datoon CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
datoon CLAUDE.mdandrii-su/datoon	Instructions file	2	2d ago	MIT	A	1,617	Claude Code
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

datoon: Instructions file for Claude Code