Spec Driven Development
de formulahendry
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Se ejecuta en tu computadora★ 440MITActualizado hace 14 meses
Instalar
Tools MCP
Resumen
Descripción del creador (original en inglés)
Web production tools for AI agents: contrast, JP text, WebP, JSON-LD, slugs, dates and 40+ more
Los tres pilares de PopNx MCP
Estos tres nunca se combinan en una sola puntuación: las opiniones, las mediciones y la popularidad son cosas distintas.
- Opinión de usuariosiAún no hay reseñasLas reseñas se abrirán junto con las cuentas en una etapa posterior
- Nuestras revisiones básicasi1 de 1 superadasRevisado con información pública; el código aún no se ha escaneado
- UsoiAún sin medir★ –
Qué puedes hacer con él
Todavía no escribimos un resumen sencillo para este. Abajo están los datos que leímos del registro.
- Conexión: Se ejecuta en tu computadora
- Transporte: stdio
- Categoría: Otros
Instalación
Elige la app de IA que usas y copia la configuración.
Antes de instalar
- Revisiones básicas: 1 de 1 superadas
- Se ejecuta en tu computadora con los permisos de tu usuario (archivos, red, apps).
- Debes completar tú:
FIRSTCH_TOOLS_USAGE_LOG,FIRSTCH_APPS_BASE_URL,MARP_CHROME_PATH
Necesitas
- npmNode.js instalado (para el comando npx)
¿Qué app usas?
Elige tu app arriba. La recordamos, así que la próxima vez el botón dirá “Instalar en …”.
Abre Claude Desktop → Settings → Developer → Edit Config y pega esto en claude_desktop_config.json
{
"mcpServers": {
"tools": {
"command": "npx",
"args": [
"-y",
"@first-ch/tools-mcp"
],
"env": {
"FIRSTCH_TOOLS_USAGE_LOG": "your-value",
"FIRSTCH_APPS_BASE_URL": "your-value",
"MARP_CHROME_PATH": "your-value"
}
}
}
}Ejecuta esto en tu terminal
claude mcp add tools --env FIRSTCH_TOOLS_USAGE_LOG=your-value --env FIRSTCH_APPS_BASE_URL=your-value --env MARP_CHROME_PATH=your-value -- npx -y @first-ch/tools-mcpCompleta los valores vacíos antes de ejecutarlo.
O copia la configuración tú
Pégalo en .cursor/mcp.json de tu proyecto, o en ~/.cursor/mcp.json
{
"mcpServers": {
"tools": {
"command": "npx",
"args": [
"-y",
"@first-ch/tools-mcp"
],
"env": {
"FIRSTCH_TOOLS_USAGE_LOG": "your-value",
"FIRSTCH_APPS_BASE_URL": "your-value",
"MARP_CHROME_PATH": "your-value"
}
}
}
}Tu navegador te pide permiso para abrir la app; luego la app muestra la configuración y te pide confirmar. Los valores de las claves quedan vacíos para que los completes tú.
O copia la configuración tú
Pégalo en .vscode/mcp.json de tu proyecto
{
"servers": {
"tools": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@first-ch/tools-mcp"
],
"env": {
"FIRSTCH_TOOLS_USAGE_LOG": "your-value",
"FIRSTCH_APPS_BASE_URL": "your-value",
"MARP_CHROME_PATH": "your-value"
}
}
}
}Tu navegador te pide permiso para abrir la app; luego la app muestra la configuración y te pide confirmar. Los valores de las claves quedan vacíos para que los completes tú.
Este se ejecuta en tu computadora, y ChatGPT solo puede conectarse a servidores en internet. Elige otra app.
Tu elección se guarda en una cookie en este dispositivo; no necesitas cuenta.
Valores que debes completar
FIRSTCH_TOOLS_USAGE_LOGenvOptional. Path to a local JSONL file for opt-in usage logging. No logging when unset.FIRSTCH_APPS_BASE_URLenvOptional. Base URL for the app_* tools (default https://apps.first-ch.com). For testing only.MARP_CHROME_PATHenvOptional. Path to a Chrome/Chromium executable used by marp_render for PDF output. Auto-detected on common paths when unset; PDF is skipped (HTML still returned) if none is found.
Esta configuración se genera a partir de la ficha del creador en el registro. Si el README dice otra cosa, sigue el README.
Qué puede hacer
Se ejecuta en tu computadora; la lista de herramientas aparece en tu app de IA después de instalarlo.
Revisiones básicasi
Revisamos información que cualquiera puede ver; no hemos leído el código. Las revisiones que no aplican no se cuentan. · Revisado el 6 nov 2026
- ✓ Superada
El creador coincide con el repo
El nombre en el registro se verificó con la cuenta de GitHub First-CH, dueña del repo
- … Aún sin revisar
Sigue en mantenimiento
Todavía no hemos leído este repo en GitHub
- … Aún sin revisar
Tiene licencia
Todavía no hemos leído este repo en GitHub
- – No aplica
El endpoint responde
Este se ejecuta en tu computadora; no hay endpoint en internet
- – No aplica
Inicio de sesión con OAuth
Se ejecuta en tu computadora y usa ajustes locales en su lugar
- … Aún sin revisar
Sin instrucciones ocultas en las descripciones de herramientas
Se ejecuta en tu computadora; solo podemos leer listas de herramientas de endpoints en internet
Comparado con otros en Otrosi
- Más estrellas que el 0% de los otros 32464 servidores de esta categoría
- Publicado en el registro más recientemente que el 100% de los otros 32464 servidores de esta categoría
- Revisiones básicas iguales o mejores que el 100% de los otros 32464 servidores de esta categoría
Comparado con todos los servidores activos de esta categoría en el registro. Las estrellas solo cuentan cuando quien lo publica es dueño del repo.
Preguntas frecuentes
¿Es seguro Tools MCP?
Superó 1 de 1 revisiones básicas aplicables. No hemos leído el código. Antes de agregar una clave o un token, revisa qué acceso pide el servidor y usa una clave que tenga solo los permisos que necesitas.
¿Qué claves o códigos necesita?
El registro no indica ninguna clave obligatoria, aunque algunos servidores te piden iniciar sesión la primera vez que los usas.
¿Se ejecuta en mi computadora o en la nube?
Se ejecuta en tu computadora. Tu app de IA lo inicia cuando hace falta, y los datos no pasan por los servidores del creador (a menos que el propio servidor llame a un servicio en línea).
¿Sigue en mantenimiento?
El repo de GitHub cambió por última vez –, y la última versión (0.48.0) llegó al registro hoy.
¿Qué apps pueden usarlo?
Las apps compatibles con MCP, como Claude Desktop, Claude Code, Cursor y VS Code. También necesitas Node.js en tu computadora.
¿Qué puedo usar en su lugar?
En la misma categoría: Spec Driven Development, Remote Desktop Commander, yontu
Alternativas
Servidores de la misma categoría hechos por otros creadores, ordenados por estrellas.
Cómo leer una tarjeta:★ Estrellas de GitHubiTres pilares: reseñas · revisiones · usoiActualizado = fecha en que se publicó la última versión en el registroi
Remote Desktop Commander
de desktop-commander
Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.
Se ejecuta en la nube★ 211Actualizado ayer
Instalar
yontu
de senrecep
Türkçe yazı denetimi: TDK kuralları, yapay zekâ izleri, metin türüne göre üslup.
Se ejecuta en tu computadoraActualizado hoy
Instalar
README del creador
Abrir el README
Copiado tal cual del repo del creador. PopNx MCP no lo ha revisado ni lo respalda. Se quitaron HTML, imágenes y scripts. Los enlaces llevan fuera de este sitio.
@first-ch/tools-mcp
MCP server exposing First CH Tools' free web-tool logic — WCAG contrast, JP character/X-weight counting, WebP conversion, JSON-LD generation, llms.txt generation, encoding/line-ending conversion, Marp Markdown→slide rendering, Japanese/English test-data generation, text/code diffing, cron-expression explanation, Base64/data-URI encoding, URL query-parameter editing, HTML entity escaping/unescaping, JSON⇄YAML conversion, px ⇄ rem/em unit conversion, colour-code conversion with alpha compositing, MD5/SHA-1/SHA-256/SHA-384/SHA-512 hashing, JWT decoding with expiry and signature checks, User-Agent parsing with device/bot detection, bulk UUID v4 / ULID generation, aspect-ratio calculation with responsive sizing, case conversion between camelCase, snake_case and kebab-case, CSV/TSV ⇄ JSON conversion, IP/CIDR calculation with subnet splitting and IP-range reduction, business-day date calculation with Japanese public holidays, HTML-to-Markdown conversion, Japanese era ⇄ Western date conversion with age calculation, and URL-slug generation from Japanese titles — to AI agents such as Claude Code. All of those run on your machine.
It also ships **app_* tools for the 38 web apps at [apps.first-ch.com](https://apps.first-ch.com) (site checks such as GEO/AI-search readiness, meta tags, security headers, SSL certificates, DNS and email DNS, redirects, broken links, structured data, AI-crawler access, Japanese readability, and AI-assisted business-tone and LP-copy checks). Unlike the local tools, an app_* tool sends its input (a URL, domain name or text) to apps.first-ch.com** and returns the JSON the app's API responds with — see Network access, files and privacy.
日本語版は 後半セクション を参照してください。
Install
Three ways to add this server, pick whichever fits your client.
Requires Node.js `>=24` (all three methods below run the server via npx, so Node must be installed even when the MCP client itself — e.g. Claude Code's native, no-Node install — doesn't strictly require it).
1. npm, via the Claude Code CLI
claude mcp add firstch-tools -- npx -y @first-ch/tools-mcp2. Claude Code plugin (also installs the same MCP server)
/plugin marketplace add First-CH/firstch-tools-mcp/plugin install firstch-tools@first-ch
3. Any other MCP client (generic JSON config)
Add to your client's server config (e.g. mcp.json / claude_desktop_config.json):
{"mcpServers": { "firstch-tools": { "command": "npx", "args": ["-y", "@first-ch/tools-mcp"] } } }
This server is also registered in the MCP Registry as io.github.First-CH/tools-mcp (see server.json), so registry-aware clients can discover and install it by that name too.
Tools
| Tool | What it does | Main input | ||
|---|---|---|---|---|
contrast_check | Computes the WCAG 2.1 contrast ratio between a foreground and background color and returns AA/AAA pass/fail (normal text, large text, UI components) | fg, bg (hex, e.g. #333333 / 333 / fff) | ||
count_chars | Counts Japanese text by grapheme, breaks it down into zenkaku/hankaku, counts lines, and computes the X (Twitter) post weight (zenkaku=2, hankaku=1, URL=23 flat, limit 280) | text | ||
webp_convert | Converts PNG/JPEG files (absolute paths) to WebP using the same libwebp WASM encoder (default quality 80) as the browser tool at tools.first-ch.com/webp/. Output defaults to the same directory as each input with a .webp extension | paths[] (absolute paths), quality? (1-100), outputDir? | ||
jsonld_generate | Generates schema.org JSON-LD for organization / faqpage / service / breadcrumb. Empty fields are omitted automatically. Returns both a json object and a ready-to-embed snippet | type, plus the matching organization / faq / service / breadcrumb object | ||
llmstxt_generate | Generates an llms.txt file (per the llmstxt.org proposed format) summarizing a site for AI crawlers/agents | siteName, summary?, notes?, sections? | ||
encoding_convert | Detects the character encoding (UTF-8 / Shift_JIS), BOM and line endings (CRLF / LF / CR) of a file or text and converts it to UTF-8. Useful for diagnosing garbled Japanese CSVs and for normalising line endings. Output is UTF-8 only — encoding *to* Shift_JIS is not supported (no standard API, and a mapping table would be required). | base64 or text, mode (analyze \ | convert), encoding, newline, bom | |
marp_render | Renders Marp Markdown to slides. Emits a self-contained HTML file (theme CSS inlined; opens in a browser and prints one-slide-per-page) and optionally PDF. Ships a bundled Japanese theme firstch (paper/ink/vermilion; uses IBM Plex Sans JP if installed) used as the default theme. Marp front-matter in the Markdown (theme: / paginate: / size: / ) is honored. | markdown or inputPath, theme?, formats? (html \ | pdf), outputPath?, title? | |
testdata_generate | Generates dummy data for form / CSV-import testing. mode=records returns names, kana readings, addresses, postal codes, emails and phone numbers as CSV/TSV/JSON/XLSX with a choice of encoding (UTF-8 / Shift_JIS), BOM and line endings. format=xlsx returns a real Excel workbook as base64 (or writes it to outputPath) — the ZIP/OOXML parts are assembled directly, with no spreadsheet dependency, and postal codes and phone numbers are written as text cells so leading zeros survive; mode=text returns strings of exactly n-1 / n / n+1 characters for maxlength boundary tests. All output is fictional (emails use the RFC 2606 example.com family). Passing a seed makes the output reproducible | mode?, rows?, fields?, format?, locale?, encoding?, newline?, bom?, header?, seed?, preset?, length?, outputPath? | ||
diff_check | Compares two texts (or two files) and returns the added/removed/changed line counts plus a unified diff (.patch) — the same logic as the browser tool at tools.first-ch.com/diff/. Lines are matched with patience diff (lines occurring exactly once in both sides become anchors), falling back to Myers only inside anchor-less ranges. With format=blocks / both, paired changed lines are also compared at token level (runs of letters/digits are one token, CJK characters one each) and returned as changed_parts, so you can see *which words* changed. CRLF/CR/LF all count as the same line break; trailing-whitespace-only differences are ignored by default | a/b (text) or pathA/pathB (absolute paths), format? (unified \ | blocks \ | both), context?, ignoreWhitespace?, ignoreCase?, words? |
cron_explain | Explains a cron expression in plain language and returns the upcoming run times — the same logic as the browser tool at tools.first-ch.com/cron/. Parsing follows Vixie cron (crontab(5)): ranges, steps, lists, JAN-DEC / SUN-SAT names and the @daily-style shorthands; six fields means the first one is seconds (node-cron / Spring style). warnings call out the traps — day-of-month and day-of-week are OR'd (not AND'd) when both are restricted, */n that does not divide its range evenly is not a uniform interval, and impossible dates such as February 30th never fire. Run times are found on the wall clock of the target time zone and converted back to real instants, so they stay correct across daylight-saving transitions | expression, timeZone? (IANA, default UTC), count? (default 5, max 100), from? (ISO 8601) | ||
base64_encode | Encodes text or a file as Base64 and a data: URI, and returns ready-to-paste HTML / CSS background-image snippets — the same logic as the browser tool at tools.first-ch.com/base64/. With mode="decode" it turns Base64 or a data URI back into bytes, writing them to outputPath when given. For SVG it returns both encodings and defaults to the shorter one (percent-encoding beats Base64, which always inflates by ~33%), always escaping & " < > # %, whitespace and non-ASCII so the URI drops straight into an HTML attribute or a CSS url("…"). Decoding accepts standard or URL-safe Base64, tolerates whitespace and newlines, does not require padding, and trusts the actual magic numbers (PNG/JPEG/GIF/WebP/ico/PDF/zip/woff/woff2/SVG) over the MIME type a data URI claims | mode? (encode default / decode), text? or path?, base64?, outputPath?, urlSafe?, wrap? (76 for MIME), dataUri?, mimeType?, snippets? | ||
url_params | Breaks a URL's query string into keys and values, edits it (set / remove / utm / removeTracking / sort) and rebuilds it — the same logic as the browser tool at tools.first-ch.com/url/. Values come back decoded (%XX to characters, + to a space), and parameters you did not touch are written back byte-for-byte, so calling it with nothing but a url returns exactly what you passed in — signed URLs survive a round trip. reencode normalises the whole query with encodeURIComponent rules instead. warnings flag duplicate keys, unencoded spaces and non-ASCII, broken %XX, + being read as a space, mixed-case UTM values, a missing utm_source/utm_medium, passwords in the URL, credential-looking keys and URLs over 2,000 characters. Relative paths and broken percent-encoding are parsed as far as they can be read instead of throwing. mode="encode" / "decode" converts a bare string instead (scheme: component / uri / form). No network access — the URL is never fetched | url?, mode? (parse default / encode / decode), text?, scheme?, set?, remove?, utm?, removeTracking?, sort?, reencode?, spaceAsPlus? | ||
html_escape | Escapes < > & " ' into HTML entities, or with mode="unescape" turns entities such as &, ' and あ back into characters — the same logic as the browser tool at tools.first-ch.com/html-escape/. Escaping handles & first, so a second pass never double-escapes what the first pass produced; pick named or numeric references (numeric), decide whether quotes are escaped (quotes, mandatory inside an attribute value) and whether ' is written as ' or ' (apos — ' does not exist in HTML 4.01), and encode non-ASCII characters as references (nonAscii) when the charset may not survive the pipeline. Unescaping covers all 252 named references from HTML 4.01 plus decimal and hexadecimal ones, maps C1-range references such as to their Windows-1252 characters as the spec requires, and leaves unknown names, out-of-range numbers and semicolon-less references untouched rather than guessing. notes reports already-escaped input, bare &, missing semicolons, unknown entity names and no-break spaces (U+00A0) | mode? (escape default / unescape), text? or path?, outputPath?, quotes?, apos?, numeric?, nonAscii? (none / named / decimal / hex) |
| json_to_yaml | Converts JSON to formatted YAML, and yaml_to_json converts back — the same logic as the browser tool at tools.first-ch.com/json-yaml/, with no YAML dependency (the parser and writer are implemented in this package). Choose the indent width, the quoting style (quote), how null is written (nullStyle), whether multi-line strings become | blocks (block), whether keys are sorted (sortKeys) and whether the output starts with --- (docStart). Strings another parser could read as a different type — yes / no / on / off, 0755, 12:30, 2026-08-12, anything numeric-looking — plus strings with surrounding whitespace or a leading - / * / # are quoted automatically, so the output means the same thing to a YAML 1.1 parser such as PyYAML. JSON containing comments, trailing commas, single quotes or unquoted keys (as in tsconfig.json) is read and conver
Solo se muestra el principio; lee el resto en el repo