What is previa?
previa is a Claude Code mod by Kelvi-Maycon that mantém um servidor de prévia no ar para o HTML editado e mostra a URL acima do prompt. It is listed under Interface and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | Kelvi-Maycon |
| Repository | Kelvi-Maycon/claude-code-mods |
| Popularity | no public popularity data yet |
| Category | Interface |
| Security | Review before installing (60/100) |
| Rank | #3,688 of 5,272 Claude Code mods; #1,538 in Interface |
| License | MIT |
| Last commit | 2026-10-08 |
| Hooks | 7 events |
| Sees | Bash calls, Write|Edit calls, compaction, every prompt |
| Draws on | AbovePrompt |
Is previa safe to install?
previa scores 60/100 on the MCPMods security check: Review before installing. Things to review: starts processes outside the sandbox; reads environment variables; watches every prompt or event. It passed 4 of 8 checks.
Mod footprints come from claude plugin validate, which lists every event a mod hooks and every API call it makes without running it.
| Check | Result |
|---|---|
| No network access | Pass |
| Starts processes outside the sandbox | Review |
| Writes no files or config | Pass |
| Reads environment variables | Review |
| Watches every prompt or event | Review |
| Doesn't drive Claude | Pass |
| Validator reported problems | Note |
| Has an open-source license | Pass |
API calls in its code
| Call | What it means |
|---|---|
$.clock.after | |
$.clock.every | |
$.clock.now | |
$.command.register | |
$.env.get | reads env vars |
$.fs.exists | reads files |
$.fs.stat | reads files |
$.process.run | runs processes |
$.process.spawn | |
$.session.cwd | |
$.session.id | |
$.state.get | |
$.state.set | |
$.store.get | keeps its own state |
$.store.set | keeps its own state |
$.ui.copy | draws interface |
$.ui.log | draws interface |
$.ui.resolve | draws interface |
$.ui.toast | draws interface |
How do I install previa?
- Check your Claude Code version. Mods need Claude Code 2.1.287 or later and are on by default.
claude --version
- Read its footprint. This lists every event it hooks and every API call it makes, without running it.
git clone https://github.com/Kelvi-Maycon/claude-code-mods claude plugin validate ./claude-code-mods/plugins/previa
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add Kelvi-Maycon/claude-code-mods && claude plugin install previa@claude-code-mods
Or ask Claude to set it up
Paste this into Claude Code and it installs previa for you:
Install the "previa" Claude Code mod from https://github.com/Kelvi-Maycon/claude-code-mods/tree/main/plugins/previa. Run claude plugin validate on it first and show me what it can access before you enable it.
More from Kelvi-Maycon/claude-code-mods
This repository has 5 Claude Code mods on MCPMods.
- barra-uso: Linha de pílulas acima do campo: uso do plano nas janelas de 5 h (5H) e 7 dias (7D), contexto até a compactação automáti (Low risk)
- cache-frio: Avisa antes de um envio que regrava o cache frio (parado além do ttl, contexto acima de 100k) e mostra contexto e tempo (Low risk)
- ds-primeiro: Anexa a skill do seu design system ao primeiro pedido de peça visual da sessão. Configure o nome da skill para ligar. (Low risk)
- progresso: Barras de progresso acima do prompt, com faixas de subagentes e comandos em background e som ao terminar, falhar ou espe (Review before installing)