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regexcronsql-validator MCP Server

answering

regexcronsql-validator is answering right now. Last checked 14 min ago. It exposes 3 tools. Last commit 11 Aug 2026.

Valida regex, cron y SQL contra ejecucion real. Pago por llamada via x402/USDC.

Uptime history 22 days of history
22 days agonow
100.0%
Uptime 24h
91 of 91 checks
3
Tools
read from the server
489 ms
Response time
average over 24h
0
Stars
last commit 11 Aug 2026

What the code does

We read the source, 13 h ago · tools taken from the live server · rules 3dff92dd89df

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Runs an external command worker-configuration.d.ts:3387
    exec(input?: string | URLPatternInit, baseURL?: string): URLPatternResult | null;

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 14 min ago.

run in your terminal
claude mcp add regexcronsql-validator --transport http https://regexcronsql-validator.encodari.workers.dev/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "regexcronsql-validator": {
      "url": "https://regexcronsql-validator.encodari.workers.dev/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.regexcronsql-validator]
url = "https://regexcronsql-validator.encodari.workers.dev/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "regexcronsql-validator": {
      "url": "https://regexcronsql-validator.encodari.workers.dev/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "regexcronsql-validator": {
      "url": "https://regexcronsql-validator.encodari.workers.dev/mcp"
    }
  }
}

Available tools 3

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

validar
validar_cron
Calcula las próximas ejecuciones reales de una expresión cron usando cron-parser (no una suposición del modelo sobre cuándo dispararía). Interpreta los campos en UTC para que el resultado no dependa de la zona horaria del servidor que corre la tool. Cuesta $0.02 USDC (Base) por llamada.
validar_regex
Ejecuta un patrón de expresión regular (motor nativo de JavaScript) contra una lista de strings de prueba y devuelve, para cada uno, si hizo match, el match completo y los grupos capturados. Usa RegExp real, no una suposición del modelo sobre qué haría el patrón. Cuesta $0.02 USDC (Base) por llamada.
validar_sql
Ejecuta una consulta SQL (dialecto Postgres, motor pg-mem en memoria) contra tablas de prueba opcionales y devuelve las filas reales resultantes. Usa un motor SQL real, no una suposición del modelo sobre qué devolvería la query. Sin base de datos persistente: las tablas se crean desde cero en cada llamada y se descartan al terminar. Cuesta $0.04 USDC (Base) por llamada.

Endpoints

URLTransportStateLatencyChecked
https://regexcronsql-validator.encodari.workers.dev/mcp streamable-http answering 632 ms 14 min ago

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regexcronsql-validator — questions

Answers built from our own checks of this server.

What can regexcronsql-validator do?
It exposes 3 tools, read directly from the server on our last check. Among them: validar_cron, validar_regex, validar_sql. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is regexcronsql-validator working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 489 ms. The bar chart above shows every period we have measured.
How do I connect regexcronsql-validator?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does regexcronsql-validator need an API key?
No. regexcronsql-validator completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 3 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is regexcronsql-validator?
It answers our handshake in 489 ms on average, which is faster than 35% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is regexcronsql-validator open source?
Yes — it is published under the MIT licence, written in TypeScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.