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/workos/skills/claude-mdgit clone --depth 1 https://github.com/workos/skillsWrote 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/workos/skills/claude-md)<a href="https://agentmods.dev/instructions/workos/skills/claude-md"><img src="https://agentmods.dev/badge/instructions/workos/skills/claude-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 | $0.01669 | $0.01669 |
| Opus 5 | $0.00834 | $0.00834 |
| Sonnet 5 | $0.00334 | $0.00334 |
| Haiku 4.5 | $0.00167 | $0.00167 |
Grade A, and why
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 4d 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
94% identical to skills AGENTS.md — 6 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 — 132 lines — stays where its author put it; the contents beside it link to each section on GitHub.
@workos/skills
Claude Code plugin providing WorkOS integration skills (AuthKit, SSO, Directory Sync, RBAC, FGA, etc.).
Commands
# Testing & formatting
pnpm test # run tests (vitest)
pnpm format # oxfmt
pnpm lint # oxlint
# Evals
pnpm eval -- --dry-run # verify cases load (no API key needed)
pnpm eval -- --no-cache # full run, skip cache
pnpm eval -- --no-cache --product=sso # run specific product
pnpm eval -- --no-cache --case=sso-node-basic # run single case
pnpm eval -- --no-cache --fail-on-regression # full run with gates
pnpm eval -- --no-cache --samples=2 # multi-sample for variance measurement
pnpm eval -- --no-cache --samples=2 --save-all-samples # + persist all sample outputs
# Eval tooling
pnpm eval:diff -- --case=sso-node-basic # side-by-side transcript diff with signal highlighting
pnpm eval:label -- --case=X --ship=yes --who=nick --reason="..." # add human judgment
pnpm eval:calibrate # compare scorer vs human labels
Project Structure
.claude-plugin/marketplace.json— Claude Code marketplace catalog (source:./plugins/workos).agents/plugins/marketplace.json— Codex marketplace catalog (source:./plugins/workos).cursor-plugin/marketplace.json— Cursor marketplace catalog (mirrors Claude catalog)plugins/workos/— installable plugin (only this gets cached).claude-plugin/plugin.json— Claude Code plugin manifest.codex-plugin/plugin.json— Codex plugin manifest.cursor-plugin/plugin.json— Cursor plugin manifest (mirrors Claude manifest; versions synced by release-please)skills/— skill directories, each withSKILL.md- Hand-crafted AuthKit skills:
workos-authkit-base,workos-authkit-nextjs,workos-authkit-react,workos-authkit-react-router,workos-authkit-tanstack-start,workos-authkit-vanilla-js,workos-widgets - Router:
workos/SKILL.md— routes user requests to the right topic file or AuthKit skill - Topic files:
workos/references/*.md— lean files with doc URLs + gotchas + optional endpoint tables
- Hand-crafted AuthKit skills:
scripts/— eval framework (not cached with plugin)tests/—*.spec.tsfiles using vitest
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.
- 4d ago First seen · 132 lines · 1,669 tokens per session scan A e55b7497490e
skills CLAUDE.md is an instructions file published in the GitHub repository workos/skills (46 stars, last pushed today), licensed MIT. It adds 1,669 tokens to every session, about $0.0083 per session on Opus 5. A static security scan graded it A with 0 findings. It is 94% identical to skills AGENTS.md, differing in 6 lines, and is treated as a copy.
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.