Claude Code Skills·Claude Skills·The open SKILL.md registry for Claude
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Jsonlines

Category: Dev Tools  ·  Sub-category: scaffolders  ·  Last updated:
type:generator
Vovk.ts JSON Lines streaming — generator handlers (`function*`, `async function*`), the `iteration` validation option, `validateEachIteration`, the `JSONLinesResponder` manual API, progressive responses via `progressive()`, consuming streams from the RPC client (async iteration, `using`, `asPromise`, `onIterate`, `abortController`), and `VovkIteration` / `VovkYieldType` inference. Use whenever the user asks to stream data ("stream tokens", "SSE-like streaming", "server-sent events", "progressive response", "poll in a loop", "yield results as they arrive", "chat completion streaming", "JSON Lines", "JSONL", "async generator endpoint", "incremental response", "push updates to the client"). Does NOT cover procedure basics → hand off to `procedure` skill. Does NOT cover RPC client setup / `vovk generate` → hand off to `rpc` skill. Does NOT cover WebSockets / bidirectional realtime — that's outside Vovk's scope.
Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

JSON Lines is Vovk's streaming model: server yields one JSON object per line, client consumes as async iterable. Works for chat completions, progress updates, long-running jobs, anything where data arrives over time.

What this skill does

Jsonlines is a community-contributed Claude Code skill in the scaffolders sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/jsonlines/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use whenever the user asks to stream data ("stream tokens", "SSE-like streaming", "server-sent events", "progressive response", "poll in a loop", "yield results as they arrive", "chat completion streaming", "JSON Lines", "JSONL", "async generator endpoint", "incremental response", "push updates to the client"). Does NOT cover procedure basics → hand off to `procedure` skill.

Who uses this skill

The Jsonlines Claude Code skill is built for developers, power users, and teams automating repetitive workflows and improving developer experience. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 211,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/jsonlines
curl -L https://claudskills.com/skills/jsonlines/SKILL.md \
  -o ~/.claude/skills/jsonlines/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/jsonlines/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/jsonlines/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\jsonlines\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Telegram

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Jsonlines Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/jsonlines/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Jsonlines skill do?
Vovk.ts JSON Lines streaming — generator handlers (`function*`, `async function*`), the `iteration` validation option, `validateEachIteration`, the `JSONLinesResponder` manual API, progressive responses via `progressive()`, consuming streams from the RPC client (async iteration, `using`, `asPromise`, `onIterate`, `abortController`), and `VovkIteration` / `VovkYieldType` inference. Use whenever the user asks to stream data ("stream tokens", "SSE-like streaming", "server-sent events", "progressive response", "poll in a loop", "yield results as they arrive", "chat completion streaming", "JSON Lines", "JSONL", "async generator endpoint", "incremental response", "push updates to the client"). Does NOT cover procedure basics → hand off to `procedure` skill. Does NOT cover RPC client setup / `vovk generate` → hand off to `rpc` skill. Does NOT cover WebSockets / bidirectional realtime — that's outside Vovk's scope.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Jsonlines skill?
Use Jsonlines when your Claude Code task falls under the Dev Tools category — specifically in the scaffolders area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Jsonlines" or describe the task and let Claude pick). Browse related skills at /category/tools/.
What is a Claude Code skill and how does the Jsonlines skill fit in?
A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Jsonlines is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Dev Tools category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA
finom. (2026). Jsonlines [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/jsonlines/
BibTeX
@misc{jsonlines-2026,
  author    = {finom},
  title     = {Jsonlines [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/jsonlines/}
}

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Security scan

Grade A · scanned 2026-10-25 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

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