# Jsx Md Authoring

> Use when writing or modifying JSX-MD prompt components, Markdown-rendering primitives, XML intrinsic prompts, or packages/jsx-md and packages/jsx-md-beautiful-mermaid behavior.

- **Type:** Skill
- **Install:** `agentstack add skill-theseus-run-theseus-jsx-md-authoring`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [theseus-run](https://agentstack.voostack.com/s/theseus-run)
- **Installs:** 0
- **Category:** [Content & Media](https://agentstack.voostack.com/c/content-and-media)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [theseus-run](https://github.com/theseus-run)
- **Source:** https://github.com/theseus-run/theseus/tree/master/.agents/skills/jsx-md-authoring
- **Website:** https://www.theseus.run

## Install

```sh
agentstack add skill-theseus-run-theseus-jsx-md-authoring
```

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

## About

# JSX-MD Authoring

Use this skill for prompt components and Markdown rendering code.

## Read First

- `packages/jsx-md/README.md`
- `packages/jsx-md/src/primitives.tsx`
- `packages/jsx-md/src/render.ts`
- `packages/jsx-md/src/context.ts`

## Authoring Rules

- Prefer JSX-MD components over inline Markdown strings.
- Use lowercase XML intrinsics for structured LLM prompt sections such as ``, ``, and ``.
- Use `Md` only as an escape hatch for genuinely undecomposable Markdown.
- Escape user-supplied strings with `Escape` or `escapeMarkdown` when they should render literally.
- Use `Codeblock` for fenced code and let it choose a safe fence length.
- Keep `render()` deterministic and synchronous.
- Do not introduce React or DOM runtime assumptions into `jsx-md`.
- Use context only for cross-cutting rendering state, not arbitrary global state.

## Text Rules

- Bare JSX text is preferred for plain prose.
- Use `{...}` only when JSX syntax requires it, such as backticks, braces, ``, or apostrophes inside the text.
- Keep XML attributes primitive and serializable.

## Verification

- Run `bun test` in `packages/jsx-md` for renderer changes.
- Run `bun run typecheck` after export, type, or JSX runtime changes.

## Source & license

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

- **Author:** [theseus-run](https://github.com/theseus-run)
- **Source:** [theseus-run/theseus](https://github.com/theseus-run/theseus)
- **License:** MIT
- **Homepage:** https://www.theseus.run

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-theseus-run-theseus-jsx-md-authoring
- Seller: https://agentstack.voostack.com/s/theseus-run
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.