Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/typefully/agent-skills/claude-mdgit clone --depth 1 https://github.com/typefully/agent-skillsWhat 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 | $0.01032 | $0.01032 |
| Opus 5 | $0.00516 | $0.00516 |
| Sonnet 5 | $0.00206 | $0.00206 |
| Haiku 4.5 | $0.00103 | $0.00103 |
Grade A, and why
agent-skills 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 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.
How it starts
The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Overview
This repository contains AI agent skills for Typefully - markdown files that give AI agents specialized workflows for drafting, scheduling, and managing social media posts across X, LinkedIn, Threads, Bluesky, Mastodon, and Substack Notes.
Repository Structure
skills/typefully/SKILL.md- The main skill definition file with frontmatter metadata, the every-session workflow, and the full command reference. Keep it focused; move occasional or platform-specific detail intoreferences/.skills/typefully/references/- On-demand reference guides linked from SKILL.md:setup.md,comments.md,local-development.md, andplatforms/(x.md,linkedin.md,x-articles.md). Put setup, comment-workflow, local-dev, and platform-specific instructions here so they load only when needed.skills/typefully/CHANGELOG.md- User-facing changelog for the Typefully skill/CLIskills/typefully/scripts/typefully.js- JavaScript CLI for the Typefully API v2 (zero dependencies, Node.js 18+).claude-plugin/marketplace.json- Claude Code plugin marketplace configuration
The Skill System
Skills are markdown files with YAML frontmatter that define:
name- Skill identifierdescription- What the skill doesallowed-tools- Tools the skill can use (e.g.,Bash(./scripts/typefully.js:*))
The SKILL.md file documents the workflow and commands that AI agents should follow when using the skill.
CLI Script
The typefully.js script is a self-contained JavaScript CLI that wraps the Typefully API:
- Requirements: Node.js 18+ (for built-in fetch API)
- Dependencies: None (uses only Node.js built-in modules)
- Authentication: Priority order:
TYPEFULLY_API_KEYenvironment variable./.typefully/config.json(project-local)~/.config/typefully/config.json(user-global)
- API Base:
https://api.typefully.com/v2
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 · 90 lines · 1,032 tokens per session scan A 7589a88f1928
agent-skills CLAUDE.md is an instructions file published in the GitHub repository typefully/agent-skills (56 stars, last pushed 5d ago), licensed MIT. It adds 1,032 tokens to every session, about $0.0052 per session on Opus 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).
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.
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.
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 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).
next.js AGENTS.md
Instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.