Date Difference Skill

What this skill does

Let your agent measure the gap between two dates. Call it as an MCP tool to return the difference in days, months and years. You switch it on with a single toggle — no SDK and no endpoint wiring — and it answers over MCP or REST using the same key as every other skill.

See it work

A real response from the Date Difference Skill — exactly what your agent gets back when it makes the call.

vervekit · datecalculatortool call

{
  "start": "2022-01-01",
  "end": "2022-12-31"
}

result

minutes: 524160
hours: 8736
days: 364
weeks: 52
months: 11
years: 0
start: { … }
end: { … }

Run it with your own input. Live calls happen in your dashboard, on your key.

Ways to use it

One toggle, a new capability

Enable Date Difference and your app or agent can add date difference to your app on demand — no SDK, no endpoint wiring. It answers over MCP or REST using the same key as every other skill.

A tool agents call themselves

Over MCP, Date Difference appears to your model as the datecalculator tool it invokes whenever a task needs it — you don't write the glue, the agent reaches for it.

REST from any backend

Prefer to call it directly? Any language that can send a GET can hit Date Difference to add date difference to your app inline in your own server-side code.

Use it in your app

Once enabled, this skill is reachable two ways — pick whichever fits how you build. Both use the same key.

For AI agentsMCP

It appears to your model as a callable tool. No extra code — the agent invokes it when a task needs it.

datecalculator

For apps & backendsREST

Call it from your server with one request and your key. Node, Python, Go — anything that can send a GET.

GET /v1/datecalculator

Ask your agent

“Enable Date Difference and ask your agent to add date difference to your app.”
“What are the important dates I should know about?”

Date Difference Skill, answered

How to connect it over MCP or REST.

How do I add Date Difference to my app or agent?

Enable the Date Difference Skill on VerveKit, then reach it two ways with the same key: over MCP (it appears to your agent as the datecalculator tool) or over REST (call it from any backend). No SDK to install and no endpoint to wire.

MCP or REST — which should I use?

Both work off one key. Use MCP when an AI agent should decide when to add date difference to your app — the skill shows up as a callable tool. Use REST when your own server-side code should call it directly. Many apps use both.

Which agents and frameworks does it work with?

Any MCP client — Claude, Cursor, LangChain, and custom agents all speak the Model Context Protocol, so Date Difference appears as a standard tool with nothing skill-specific to integrate.

How many credits does a Date Difference call cost?

Each call costs 1 credit. Every skill rides the same key and the same connection, so enabling more skills doesn't add more integrations to manage.

Do I need to install anything?

No SDK and no endpoint wiring — enabling the skill is a toggle. You point your agent at the VerveKit MCP endpoint (or call REST) and Date Difference is available immediately.

Where does the data come from, and what shows on my bill?

VerveKit runs on APIVerve, our production data engine; Date Difference is one of 300+ skills on the same key. Invoices and card statements show APIVERVE.

One toggle, a new capability

A tool agents call themselves

REST from any backend

Date Difference Skill, answered

Give your software a way to act on the world.

Scaling in production?