Borrowing it
Nothing to install: this file belongs to contentful/skill-kit. 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/contentful/skill-kit/main/AGENTS.mdgit clone --depth 1 https://github.com/contentful/skill-kitWrote 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/contentful/skill-kit/agents-md)<a href="https://agentmods.dev/instructions/contentful/skill-kit/agents-md"><img src="https://agentmods.dev/badge/instructions/contentful/skill-kit/agents-md.svg" alt="Measured on agentmods" 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 | $0.02828 | $0.02828 |
| Opus 5 | $0.01414 | $0.01414 |
| Sonnet 5 | $0.00566 | $0.00566 |
| Haiku 4.5 | $0.00283 | $0.00283 |
Grade A, and why
skill-kit 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 3d 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.
This is a copy
92% identical to skill-kit CLAUDE.md — 126 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 126 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent Guide
This is the canonical instruction file for all coding agents working in this repository.
Project
@contentful/skill-kit — TypeScript SDK for building agent skills with CLI-driven workflows. Companion to @contentful/agents-kit.
Read SPEC.md before any substantive work. It is the source of truth for the SDK's design, primitives, and protocol. The notes below are a reading guide, not a replacement.
Tech stack
- Runtime: Node.js 24+ with tsx for dev
- Package manager: pnpm
- Language: TypeScript 7 for repository checks (strict mode, ESM)
- Schema validation: ArkType for public/runtime schemas; Zod 4 for MCP tool input schemas
- Test runner:
node --test --import tsx/esm, colocated*.test.tsfiles,node:assert/strict - Linting: oxlint (correctness + suspicious rules; style rules off — Prettier owns formatting)
- Formatting: Prettier (
singleQuote: true,printWidth: 120) - Build/distribution:
--mode bun(default) usesbun build --compilefor standalone executables;--mode nodeuses esbuild for lightweight.mjsbundles
Commands
pnpm install— install dependenciespnpm exec tsc --noEmit— type checknode --test --import tsx/esm 'src/**/*.test.ts'— run all SDK testsnode --test --import tsx/esm examples/get-to-know-you/src/skill.test.ts— run workflow example testsnode --test --import tsx/esm examples/ts-patterns/src/skill.test.ts— run reference example testsnode --test --import tsx/esm examples/contentful-help/src/skill.test.ts— run composite example testspnpm run lint— lint with oxlintpnpm run lint:fix— lint and auto-fix with oxlintpnpm exec prettier --check .— check formattingpnpm exec prettier --write .— fix formattingnode --import tsx/esm bin/skill-kit.js build <entry.ts> -o <outdir> --single— build a skill executable (dev, current platform)node --import tsx/esm bin/skill-kit.js build <entry.ts> -o <outdir> --mode node— build a skill as a Node.js bundle
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.
- 3d ago First seen · 126 lines · 2,828 tokens per session scan A f97a0e2a66df
skill-kit AGENTS.md is an instructions file published in the GitHub repository contentful/skill-kit (66 stars, last pushed yesterday), licensed MIT. It adds 2,828 tokens to every session, about $0.0141 per session on Opus 5. A static security scan graded it A with 0 findings. It is 92% identical to skill-kit CLAUDE.md, differing in 126 lines, and is treated as a copy.
Other instructions, from other repositories
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.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
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).
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
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.
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.