Borrowing it
Nothing to install: this file belongs to ronak-create/FableCut. 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/ronak-create/FableCut/main/AGENTS.mdgit clone --depth 1 https://github.com/ronak-create/FableCutWrote 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/ronak-create/fablecut/agents-md)<a href="https://agentmods.dev/instructions/ronak-create/fablecut/agents-md"><img src="https://agentmods.dev/badge/instructions/ronak-create/fablecut/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/ronak-create/fablecut/agents-md"><img src="https://agentmods.dev/badge/instructions/ronak-create/fablecut/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 | $0.00290 | $0.00290 |
| Opus 5.5 | $0.00116 | $0.00116 |
| Sonnet 5.5 | $0.00058 | $0.00058 |
| Haiku 4.5 | $0.00029 | $0.00029 |
Grade A, and why
FableCut 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 17d 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
Working with FableCut
The complete agent manual is in CLAUDE.md. Read it before changing the project schema, using the MCP tools, or editing the timeline. This file exists so agents that look for the cross-tool AGENTS.md convention, including OpenCode and Codex, find the same source of truth without duplicating it.
Project constraints
- Keep FableCut zero-runtime-dependency and standard-library only.
- Keep preview and export on the same compositor path.
- Prefer small, focused changes and preserve the existing terse browser-native style.
- If a schema, prop, text animation, API, or MCP surface changes, update
CLAUDE.mdand the EnglishREADME.mdin the same change. - Follow the "Shipping a feature" checklist in CONTRIBUTING.md: agent parity, docs and site, changelog.
- Run
npm testandnode .github/scripts/release-check.jsbefore opening a PR.
MCP entry point
The local MCP server is mcp-server.js. It can be started by any stdio-capable MCP client:
node /absolute/path/to/FableCut/mcp-server.js
Use the existing CLAUDE.md recipes and tool descriptions rather than inventing a second protocol or schema.
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.
- 17d ago Changed · +1 lines · +30 tokens per session 8bb022e5c376
- 1mo ago Changed · +4 tokens per session 4f7865c8b65e
- 1mo ago First seen · 22 lines · 256 tokens per session scan A 85506972106a
FableCut AGENTS.md is an instructions file published in the GitHub repository ronak-create/FableCut (766 stars, last pushed today), licensed MIT. It adds 290 tokens to every session, about $0.0012 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.
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).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.