Markstream Custom Components

What it does

When your agent uses it

• Frontend & Design work in your project

Example prompts

• “/markstream-custom-components”

Workflow steps

7 steps, taken from the first numbered list in SKILL.md.

1. 1Classify the change as a built-in override, trusted tag, or parser transform.
2. 2Prefer scoped mappings. Vue, Vue 2, Svelte, and Angular can use setCustomComponents(customId, mapping); Svelte and Angular can also pass…
3. 3In React, prefer streamingComponents for parser-backed nodes and htmlComponents for sanitized attributes plus children.
4. 4Start with leaf nodes before containers that must preserve children.
5. 5For trusted tag bodies containing Markdown, use a nested renderer with the same allowlist. Do not add a second smooth-streaming loop.
6. 6Preserve node/loading props, identity keys, scope IDs, theme state, and preview-height estimates for async diagrams.
7. 7Remove temporary scoped registrations on cleanup and validate repeated and nested tags.

What it can do on your machine

Read from SKILL.md and the folder at commit 1e53ce2. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  No scripts in the folder and no shell commands in SKILL.md (its code samples are typescript).

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Markstream Custom Components loads about 770 tokens when it runs, and up to ~966 if it reads all its reference files. Until then it costs about 43 tokens; SKILL.md has 248 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~43

When it runs · the whole SKILL.md, loaded when a task matches

~770

With references · SKILL.md plus every file in references/, read only if the agent opens them

~966

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from sickn33/agentic-awesome-skills at commit 1e53ce2, republished under its MIT licence (© sickn33). 248 words, ~770 tokens.

name

markstream-custom-components

description

Override Markstream node renderers and add trusted custom tags across Vue, React, Svelte, and Angular using scoped or renderer-local mappings.

category

frontend

risk

critical

source

https://github.com/Simon-He95/markstream-vue/tree/main/.agents/skills/markstream-custom-components

source_repo

Simon-He95/markstream-vue

source_type

official

date_added

2026-07-21

author

Simon-He95

tags

markdown, components, vue, react, svelte, angular

tools

claude, cursor, gemini, codex

license

MIT

import MarkdownRender, {
  type NodeComponentProps,
  setCustomComponents,
} from 'markstream-react'
import 'markstream-react/index.css'

function ThinkingNode({ node }: NodeComponentProps<any>) {
  return <details><summary>Thinking</summary>{node.content}</details>
}

setCustomComponents('assistant-panel', { thinking: ThinkingNode })

export function Answer({ markdown }: { markdown: string }) {
  return (
    <MarkdownRender
      content={markdown}
      customId="assistant-panel"
      customHtmlTags={['thinking']}
      htmlPolicy="safe"
    />
  )
}

© sickn33, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file (references) in skills/markstream-custom-components of sickn33/agentic-awesome-skills.

• SKILL.md
• references/patterns.md

Open the folder on GitHubat commit 1e53ce2

Used in 1 other repository

We found 5 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in sickn33/agentic-awesome-skills, which our catalogue first saw on October 7, 2026.

• lingxling/awesome-skills-cnantigravity-awesome-skills/skills/markstream-custom-componentsantigravity-awesome-skills/plugins/agentic-awesome-skills/skills/markstream-custom-components+1 more