ls-iam

ls-iam is a skill for Claude Code from developer-overheid-nl/skills-standaarden. It costs 45 tokens per session (6,164 once invoked), scanned B, original, EUPL-1.2.

Guidance on authentication and authorisation standards used by government systems, including OAuth, OpenID Connect, AuthZEN, and SAML.

In plain words
What is it for?
It is for questions about JWTs, PKCE, private-key JWT authentication, and OIN authentication in government integrations.
Why use it?
It helps distinguish proving who a user or service is from deciding what that user or service may access, using relevant Dutch government profiles.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: model in frontmatter.

Part of the standaarden plugin — 10 skills shipped together

Good fit It is for questions about JWTs, PKCE, private-key JWT authentication, and OIN authentication in government integrations.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/developer-overheid-nl/skills-standaarden/ls-iam
Install

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.

Any agent
npx skills add developer-overheid-nl/skills-standaarden --skill ls-iam
Clone the repo
git clone --depth 1 https://github.com/developer-overheid-nl/skills-standaarden

Made for: Claude Code.

Or install standaarden, the plugin that ships this one along with the rest of its 10 skills.

Wrote 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.

agentmods badge for ls-iam

README.md
[![agentmods](https://agentmods.dev/badge/skills/developer-overheid-nl/skills-standaarden/ls-iam/github.svg)](https://agentmods.dev/skills/developer-overheid-nl/skills-standaarden/ls-iam)
Your own site
<a href="https://agentmods.dev/skills/developer-overheid-nl/skills-standaarden/ls-iam"><img src="https://agentmods.dev/badge/skills/developer-overheid-nl/skills-standaarden/ls-iam/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.

agentmods 80×15 button for ls-iam

Your own site · 80×15
<a href="https://agentmods.dev/skills/developer-overheid-nl/skills-standaarden/ls-iam"><img src="https://agentmods.dev/badge/skills/developer-overheid-nl/skills-standaarden/ls-iam.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,164 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00045 $0.06164
Opus 5 $0.00023 $0.03082
Sonnet 5 $0.00009 $0.01233
Haiku 4.5 $0.00005 $0.00616

Measured 10d ago against content hash 0272862f50b4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade B, and why

ls-iam scanned grade B with 2 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 10d 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.

Sends data to an external URLmediumData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

token_response = requests.post("https://auth.example.com/token", data={

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- Bash(curl -s *)
skills/ls-iam/SKILL.md · 501 lines

The source is not reproduced here

Licensed EUPL-1.2

The repository is licensed EUPL-1.2, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

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.

  1. 10d ago First seen · 501 lines · 45 tokens per session scan B 0272862f50b4

Subscribe to this mod's changes

ls-iam is a skill published in the GitHub repository developer-overheid-nl/skills-standaarden (5 stars, last pushed yesterday), licensed EUPL-1.2. It adds 45 tokens to every session and 6,164 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it B with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.