Borrowing it
Nothing to install: this file belongs to KittLabsAI/KittyCode. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/KittLabsAI/KittyCode/main/AGENTS.mdgit clone --depth 1 https://github.com/KittLabsAI/KittyCodeWrote 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.
[](https://agentmods.dev/instructions/kittlabsai/kittycode/agents-md)<a href="https://agentmods.dev/instructions/kittlabsai/kittycode/agents-md"><img src="https://agentmods.dev/badge/instructions/kittlabsai/kittycode/agents-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.
<a href="https://agentmods.dev/instructions/kittlabsai/kittycode/agents-md"><img src="https://agentmods.dev/badge/instructions/kittlabsai/kittycode/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00175 | $0.00175 |
| Opus 5.5 | $0.00070 | $0.00070 |
| Sonnet 5.5 | $0.00035 | $0.00035 |
| Haiku 4.5 | $0.00017 | $0.00017 |
Grade A, and why
KittyCode 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.
What it actually says
KittyCode Agent Guide
Development Rules
- Practice TDD when behavior changes: add or update a failing test first whenever practical.
- Reuse existing functions and modules before adding new helpers or parallel code paths.
- Do not introduce redundant variables, redundant helper functions, or duplicated logic.
- Prefer small, explicit functions with clear inputs and outputs.
Constraints
- Every code change must pass the full test suite:
python -m pytest -q. - Do not leave the project with broken imports, half-moved modules, or stale structure documentation.
- If a package move breaks legacy import paths still used by tests or callers, add a compatibility layer instead of forcing a broad rewrite.
- Keep the implementation simple and readable; avoid unnecessary architectural expansion.
- When changing the agent loop, tools, or CLI interrupt flow, verify both normal completion and interruption paths.
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 · 17 lines · 175 tokens per session scan A 45a972408827
KittyCode AGENTS.md is an instructions file published in the GitHub repository KittLabsAI/KittyCode (6 stars, last pushed 6mo ago), licensed MIT. It adds 175 tokens to every session, about $0.0007 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.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.