schema-markup

schema-markup is a command for coding agents from citedy/skills. It costs 15 tokens per session (90 once invoked), scanned A, original, MIT.

A workflow for adding or correcting JSON-LD structured data, which is machine-readable information that describes a web page to search engines and other software.

In plain words
What is it for?
Use it for a page URL or page type when implementing, fixing, or optimizing schema markup and deciding where the JSON-LD should go.
Why use it?
It helps pages provide clearer information about their type and content through schema markup, reducing the need to design that data structure manually.

Command

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.

agentmods
npx agentmods add commands/citedy/skills/schema-markup
Clone the repo
git clone --depth 1 https://github.com/citedy/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 schema-markup

README.md
[![agentmods](https://agentmods.dev/badge/commands/citedy/skills/schema-markup.svg)](https://agentmods.dev/commands/citedy/skills/schema-markup)
Your own site
<a href="https://agentmods.dev/commands/citedy/skills/schema-markup"><img src="https://agentmods.dev/badge/commands/citedy/skills/schema-markup.svg" alt="Measured on agentmods" height="20"></a>
Per session 15 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 90 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original 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 $0.00015 $0.00090
Opus 5 $0.00008 $0.00045
Sonnet 5 $0.00003 $0.00018
Haiku 4.5 $0.00002 $0.00009

Measured 4d ago against content hash 1e958befd061, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

schema-markup 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.

commands/schema-markup.md · 10 lines

What it actually says

Treat $1 as the page URL or page type to add schema markup for. If $1 is missing, ask the user what page they want schema markup for and stop.

Read .claude/skills/schema-markup/SKILL.md and follow the workflow to implement schema markup.

Present the generated JSON-LD code and placement instructions.

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. 4d ago First seen · 10 lines · 15 tokens per session scan A 1e958befd061

Subscribe to this mod's changes

schema-markup is a command published in the GitHub repository citedy/skills (2 stars, last pushed 3mo ago), licensed MIT. It adds 15 tokens to every session and 90 once invoked, about $0.0001 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 2026-08-31.