Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Descripción del creador (original en inglés)
Exact date/time math for agents: business days, holidays, time zones, cron, RRULE, SLA. x402 paid.
Estos tres nunca se combinan en una sola puntuación: las opiniones, las mediciones y la popularidad son cosas distintas.
Todavía no escribimos un resumen sencillo para este. Abajo están los datos que leímos del registro.
Elige la app de IA que usas y copia la configuración.
Necesitas
¿Qué app usas?
Elige tu app arriba. La recordamos, así que la próxima vez el botón dirá “Instalar en …”.
Funciona en Claude para web, escritorio y móvil:
https://date-math.datemath.workers.dev/mcpEjecuta esto en tu terminal
claude mcp add --transport http date-math https://date-math.datemath.workers.dev/mcpPégalo en .cursor/mcp.json de tu proyecto, o en ~/.cursor/mcp.json
{
"mcpServers": {
"date-math": {
"url": "https://date-math.datemath.workers.dev/mcp"
}
}
}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.
Pégalo en .vscode/mcp.json de tu proyecto
{
"servers": {
"date-math": {
"type": "http",
"url": "https://date-math.datemath.workers.dev/mcp"
}
}
}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.
ChatGPT solo se conecta a servidores en internet:
https://date-math.datemath.workers.dev/mcpLos nombres de los menús pueden variar un poco según el plan y con el tiempo.
Tu elección se guarda en una cookie en este dispositivo; no necesitas cuenta.
Esta configuración se genera a partir de la ficha del creador en el registro. Si el README dice otra cosa, sigue el README.
Nombres y descripciones de las herramientas tal como los informó el servidor el 7 nov 2026. Los escribió el creador, no nosotros; los mostramos como texto sin formato.
date_diffDifference between two dates or datetimes: calendar (Y/M/D), total days/weeks/hours, and business days (weekdays in [from, to) minus holidays; pass country to exclude its public holidays). Costs $0.001 per call (x402).
date_addAdd or subtract years/months/weeks/days/business days/hours/minutes/seconds. Month-end clamping; business days skip weekends, given holidays, and the public holidays of an optional country. Costs $0.001 per call (x402).
timezone_convertConvert an instant or local wall-clock time between IANA time zones (DST-aware). Costs $0.001 per call (x402).
date_infoCalendar facts for a date: weekday, ISO week, quarter, day of year, leap year, weekend. Costs $0.001 per call (x402).
public_holidaysPublic holidays for a country and year: 207 countries, 2000–2050. Lunar or government-proclaimed dates are rule-based estimates. Costs $0.001 per call (x402).
working_hours_overlapFind when working hours overlap across time zones (meeting windows). Per-participant hours optional; skips weekends by default; up to 14 days. Costs $0.001 per call (x402).
cron_scheduleExplain a cron expression in plain English and list its next run times in any time zone. Costs $0.001 per call (x402).
parse_date_textResolve natural-language dates like "next Friday at 3pm", "in 2 weeks" or "Dec 25 to Jan 2" to exact datetimes, relative to a reference time and time zone. Costs $0.001 per call (x402).
city_timeFind the IANA time zone and current local time for up to 10 cities by name ("Cebu", "São Paulo", "Springfield" + country). 7,000+ cities. Costs $0.001 per call (x402).
recurring_datesExpand an iCalendar RRULE ("every 2nd Tuesday", "Mon/Wed until June") into concrete dates and times in a time zone, DST-aware, with optional excluded dates. Costs $0.001 per call (x402).
business_hours_deadlineSLA math in working hours: the deadline N business hours after a start time, or business time elapsed between two times. Custom hours and workdays, holidays, country public holidays, DST-aware. Costs $0.001 per call (x402).
Revisamos información que cualquiera puede ver; no hemos leído el código. Las revisiones que no aplican no se cuentan. · Revisado el 7 nov 2026
El nombre en el registro se verificó con la cuenta de GitHub JowenDelaPena, dueña del repo
Todavía no hemos leído este repo en GitHub
Todavía no hemos leído este repo en GitHub
Respondió en 280 ms (HTTP 200)
No hace falta iniciar sesión
Leímos 11 descripciones de herramientas y no encontramos instrucciones ocultas para la IA
Comparado con todos los servidores activos de esta categoría en el registro. Las estrellas solo cuentan cuando quien lo publica es dueño del repo.
Superó 3 de 3 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.
El registro no indica ninguna clave obligatoria, aunque algunos servidores te piden iniciar sesión la primera vez que los usas.
Se ejecuta en la nube del creador. Te conectas por internet sin instalar nada, pero lo que envías pasa por los servidores del creador.
El repo de GitHub cambió por última vez –, y la última versión (1.2.0) llegó al registro hoy.
Las apps compatibles con MCP, como Claude Desktop, Claude Code, Cursor y VS Code. Se conecta por URL, así que también funcionan las apps que aceptan servidores MCP remotos, como ChatGPT en modo desarrollador.
En la misma categoría: Spec Driven Development, Remote Desktop Commander, Playcal
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
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.
Edit-settle-verify loop, observe, replay and log tools for AI agents working in the Unity Editor
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.
Exact date and time math for AI agents, paid per call. LLMs are unreliable at business days, DST, recurring schedules and holiday calendars. Date Math gives them deterministic answers over HTTP or MCP.
https://date-math.datemath.workers.devhttps://date-math.datemath.workers.dev/mcp (Streamable HTTP)/llms.txt · /openapi.jsonHTTP (POST, JSON body) | MCP tool | What it does |
|---|---|---|
/v1/diff | date_diff | Days, weeks, months and business days between two dates. Pass country to skip its public holidays. |
/v1/add | date_add | The date N days, weeks, months or business days before or after a date |
/v1/convert | timezone_convert | Converts a time between IANA time zones (DST-aware) |
/v1/info | date_info | Weekday, ISO week, quarter, day of year, leap year |
/v1/holidays | public_holidays | Public holidays for 207 countries, 2000–2050 |
/v1/overlap | working_hours_overlap | When working hours overlap across time zones (meeting slots) |
/v1/cron | cron_schedule | Explains a cron expression and lists its next runs in any zone |
/v1/parse | parse_date_text | "next Friday at 3pm" → an exact ISO datetime |
/v1/city | city_time | City name → time zone and local time (7,000+ cities) |
/v1/recurrence | recurring_dates | Expands an iCal RRULE ("every 2nd Tuesday") into dates |
/v1/business_hours | business_hours_deadline | SLA deadline N working hours from now, or working time elapsed |
Every response is a JSON object. Errors look like {"error":{"code","message"}}. Full schemas and examples are in /openapi.json.
# Unpaid call → HTTP 402 with payment terms in the PAYMENT-REQUIRED header
curl -i -X POST https://date-math.datemath.workers.dev/v1/business_hours \ -H "Content-Type: application/json" \ -d '{"start":"2026-11-06T16:00","hours":2,"timezone":"Asia/Manila","country":"PH"}'
| Request body | Result |
|---|---|
/v1/business_hours {"start":"2026-11-06T16:00","hours":2,"timezone":"Asia/Manila"} | "deadline":"2026-11-09T10:00:00+08:00" (Monday) |
/v1/add {"date":"2026-12-22","business_days":5,"country":"PH"} | "result":"2026-12-31" (skips Christmas and Rizal Day) |
/v1/overlap {"timezones":["Asia/Manila","Europe/London"],"date":"2026-11-10","work_end":"18:00"} | One window: 09:00–10:00Z |
/v1/recurrence {"rrule":"FREQ=MONTHLY;BYDAY=2TU","start":"2026-01-01T10:00","timezone":"Asia/Manila","count":3} | Jan 13, Feb 10, Mar 10 at 10:00 +08:00 |
Any x402 client pays automatically. With the official TypeScript client:
import { wrapFetchWithPaymentFromConfig } from "@x402/fetch";
import { ExactEvmScheme } from "@x402/evm"; import { privateKeyToAccount } from "viem/accounts";
const pay = wrapFetchWithPaymentFromConfig(fetch, { schemes: [{ network: "eip155:8453", client: new ExactEvmScheme(privateKeyToAccount(process.env.KEY as 0x${string})) }], });
const res = await pay("https://date-math.datemath.workers.dev/v1/city", { method: "POST", headers: { "Content-Type": "application/json" }, body: JSON.stringify({ cities: ["Cebu", "London"] }), }); console.log(await res.json());
The wallet needs USDC on Base. No ETH is required, because the facilitator pays gas.
https://date-math.datemath.workers.dev/mcp (Streamable HTTP, stateless)tools/list) is free._meta, and x402-aware clients handle it automatically:import { createx402MCPClient } from "@x402/mcp";
import { ExactEvmScheme } from "@x402/evm/exact/client"; import { StreamableHTTPClientTransport } from "@modelcontextprotocol/sdk/client/streamableHttp.js";
const client = createx402MCPClient({ name: "my-agent", version: "1.0.0", schemes: [{ network: "eip155:8453", client: new ExactEvmScheme(account) }], autoPayment: true, }); await client.connect(new StreamableHTTPClientTransport(new URL("https://date-math.datemath.workers.dev/mcp"))); const r = await client.callTool("public_holidays", { country: "US", year: 2026 });
MCP clients without x402 support can list the tools, but calls return "Payment required".
The service is a single Cloudflare Worker and fits the free plan: every tool uses 0–6 ms of CPU per call.
cd worker
npm install npm test # 99 tests npx wrangler login npx wrangler deploy
Set your own wallet and price in worker/wrangler.toml:
| Setting | Meaning |
|---|---|
PAY_TO | Your wallet address. Leave empty to make every endpoint free. |
PRICE | Price per call, e.g. $0.001 |
X402_NETWORK | eip155:8453 (Base) or eip155:84532 (Base Sepolia, for testing) |
FACILITATOR_URL | Defaults to PayAI: no key needed, and it pays gas |
Optional secrets (set with npx wrangler secret put):
To check your deployment against x402scan's discovery rules, run node tools/x402scan-audit.mjs https://your-worker.workers.dev.
@x402/hono and @x402/mcp.x-payment-info, /.well-known/x402, x402 Bazaar metadata on every 402, and llms.txt.worker/scripts/build-*.mjs), so lookups are O(1) per request.Intl formatters and a week-segment cache. They're tested against direct lookups for tricky zones (Morocco, Lord Howe, Chatham).worker/src/cron.ts), checked against cron-parser on 400 random expressions.new Function), which Workers blocks. wrangler.toml aliases it to a no-op shim (worker/src/shims/bazaar.ts).Contact: see info.contact in /openapi.json.