# Schema Maker

> Generate JSON-LD structured data (Article, FAQPage, HowTo, Organization, Person with knowsAbout) and llms.txt from a markdown post. Schema is now a citation lever for AI answer engines rather than a rich-result one. Use when: 'add schema markup', 'JSON-LD for this post', 'structured data', 'разметка schema.org', 'llms.txt'.

- **Type:** Skill
- **Install:** `agentstack add skill-mikefluff-skills-schema-maker`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [Mikefluff](https://agentstack.voostack.com/s/mikefluff)
- **Installs:** 0
- **Category:** [AI & ML](https://agentstack.voostack.com/c/ai-and-ml)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [Mikefluff](https://github.com/Mikefluff)
- **Source:** https://github.com/Mikefluff/skills/tree/main/skills/schema-maker
- **Website:** https://www.npmjs.com/package/@mikefluff/skills

## Install

```sh
agentstack add skill-mikefluff-skills-schema-maker
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

Turn a finished markdown post into the structured data that decides whether an
answer engine can quote it. Deterministic: reads frontmatter and headings,
emits validated JSON-LD. No model call, no network.

## ROLE

Structured data used to be about rich results in Google. That era ended on
2026-05-07, when Google retired the FAQ rich result. The markup did not stop
mattering — it changed job. AI Overviews, ChatGPT browsing, Perplexity and
Gemini parse `FAQPage` first when deciding whose answer to quote, and pages
carrying Tier 1 schema turn up in AI summaries markedly more often than pages
without it.

So this skill optimises for citation, not for a SERP widget.

Not for writing the copy — that is `landing-copy` (marketing surfaces) or
`essay-write` (longform). Not for checking whether the prose is extractable —
that is `writer --aeo`. This skill assumes the text exists and describes it.

## PIPELINE

1. **Read the post.** Frontmatter supplies title, date, description and tags.
   The body supplies the FAQ pairs.

2. **Extract Q&A automatically.** Every question-form `##` / `###` heading plus
   the first paragraph under it becomes a `Question` / `acceptedAnswer` pair.
   This is why question headings are worth the trouble twice over: they help a
   human scan, and they are what an engine lifts. Run `writer --aeo` first if
   the headings are still statements.

3. **Attach the author entity.** `knowsAbout` is the property that ties an
   author to a topic, and author authority became a direct ranking input in the
   March 2026 update. An author node without `knowsAbout` and `sameAs` is a
   name, not an entity.

4. **Emit one graph.** Several types go into `@graph` rather than several
   script tags, so a parser can resolve references between them.

5. **Paste into the page head.** For a static site, into the layout template or
   the post's frontmatter, depending on the generator.

```bash
python3 -m common.runners.cli.schema --from ./post.md \
  --url "https://you.dev/posts/model-drift/" \
  --author-name "Your Name" --author-url "https://you.dev/about" \
  --knows-about "Claude Code,SEO" \
  --publisher-name "You" --publisher-url "https://you.dev"
```

## MODES

- `--from ` — read frontmatter + body
- `--types article,faq,organization` — which nodes to emit (default `article,faq`)
- `--url` — canonical URL of the page
- `--author-name` / `--author-url` / `--knows-about` / `--same-as` — the author entity
- `--publisher-name` / `--publisher-url`
- `--date-modified` — ISO date; defaults to `datePublished`
- `--raw` — omit the `` wrapper
- `--llms-txt --site-name X --site-summary Y` — render an llms.txt instead

## REFERENCES (load on demand)

| File | When to load |
|---|---|
| [references/types.md](references/types.md) | Which schema type fits the page, and what each one needs to be valid |
| [references/llms-txt.md](references/llms-txt.md) | Before promising anything about llms.txt — the honest state of the convention |

## CONSTRAINTS

- **Never describe content that is not on the page.** Schema that disagrees with
  the visible text is spam under Google's structured-data policy, and it is the
  one failure here that can cost a manual action rather than just doing nothing.
- **FAQ questions must be questions.** A statement in a `Question` node is
  rejected rather than emitted — the whole value is that engines lift the pair
  verbatim, and a statement defeats it.
- **`dateModified` is not optional in practice.** Freshness is read from both
  dates. An article that never declares a modification date reads as
  unmaintained however recently it was edited.
- **Headlines over 110 characters are rejected.** The Article type documents the
  limit and Google truncates past it.
- **Do not oversell llms.txt.** It is a community convention with no standards
  body and no vendor committed to reading it in production. Cheap and harmless,
  not a lever.

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [Mikefluff](https://github.com/Mikefluff)
- **Source:** [Mikefluff/skills](https://github.com/Mikefluff/skills)
- **License:** MIT
- **Homepage:** https://www.npmjs.com/package/@mikefluff/skills

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-mikefluff-skills-schema-maker
- Seller: https://agentstack.voostack.com/s/mikefluff
- Browse the marketplace: https://agentstack.voostack.com/browse

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