kobato: Instructions file for Codex

AGENTS.md

kobato AGENTS.md is an instructions file for Codex, OpenCode from syhily/kobato. It costs 7,213 tokens per session, scanned A, original, MIT.

Project-specific instructions for working on syhily/kobato, a React application with server rendering, SQLite storage, and a DuckDB analytics sidecar. They describe its code layout, configuration file, and environment-variable rules.

In plain words
What is it for?
Use them when navigating the repository, changing server or client code, working with configuration, or running tests and tools that need a specific config file.
Why use it?
They help an agent make changes that fit the project’s existing structure and configuration behavior.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions AGENTS.md.

This is syhily/kobato's own configuration. It tells Codex and OpenCode how to work on kobato itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything kobato configures →

Reuse

Borrowing it

Nothing to install: this file belongs to syhily/kobato. 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/syhily/kobato/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/syhily/kobato

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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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.

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Your own site · 80×15
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Per session 7,213 This file is loaded in full into every session.
When invoked 7,213 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.07213 $0.07213
Opus 5.5 $0.02885 $0.02885
Sonnet 5.5 $0.01443 $0.01443
Haiku 4.5 $0.00721 $0.00721

Measured 2mo ago against content hash 674fe61670c5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

kobato AGENTS.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.

AGENTS.md · 397 lines

How it starts

The opening of the file, as written. The whole thing — 397 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Project conventions

Repository conventions for AI agents and contributors.

Quick orientation

  • React Router 8 Framework Mode with SSR (appDirectory: 'src'), React 19 TSX/TS only, SQLite (node:sqlite) + a DuckDB analytics sidecar.
  • Path alias @/* → ./src/*.
  • Five layers under src/: routes/ (orchestration), server/ (SSR), client/ (browser), ui/ (components), shared/ (isomorphic).

Config file

Infrastructure configuration lives in kobato.config.json — auto-created with defaults when missing. src/server/infra/config.ts's CONFIG_TABLE maps nested config paths to Zod schemas; the validated serverConfig object exported from that module is what consumers read. Env var names are derived by convention (path.join('__') → storage__database).

  • Location order: --config <path> → SEA <execDir>/kobato.config.json → ./kobato.config.json → ~/.config/kobato.config.json. First existing wins.
  • Precedence: schema defaults < config file < env vars. Env values differing from the file are written back.
  • VITEST=true without --config → env-only, zero filesystem access.
  • Tooling that spawns the binary MUST pass --config <tempDir>/… to avoid persisting throwaway config next to the binary.
  • Adding a config value: add a CONFIG_TABLE row → update kobato.config.example.json → cover it in tests/unit/server/infra/config.test.ts.

Subdirectory conventions

Claude loads these additively as it moves through the codebase:

File Scope
src/routes/AGENTS.md Route modules, loaders, actions, React Router conventions
src/server/AGENTS.md Server layers (infra, domains, http, render), API procedures, auth
src/client/AGENTS.md Browser hooks, oRPC client, React.lazy patterns
src/ui/AGENTS.md Pure-props components, shadcn, PT renderer, component architecture
src/styles/AGENTS.md Tailwind tokens, design-system CSS, @theme conventions
src/shared/AGENTS.md Isomorphic modules, Zod contracts, DTOs, PT schema
tests/AGENTS.md Test utilities, naming conventions, coverage rules

Read the full file on GitHub · 397 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. 2mo ago First seen · 397 lines · 7,213 tokens per session scan A 674fe61670c5

Subscribe to this mod's changes

kobato AGENTS.md is an instructions file published in the GitHub repository syhily/kobato (114 stars, last pushed 7d ago), licensed MIT. It adds 7,213 tokens to every session, about $0.0289 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 2026-08-30.

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