Overview
Date Calculator works by analyzing the dates provided and calculating the date difference. It uses advanced algorithms to calculate the date difference based on the dates and returns the calculated date difference.
Live Test Date Calculation for AI Agents Source →
The tool
Once your client is connected to the VerveContext server, this appears in its tool list as DateCalculationforAIAgents. It is read-only and open-world — it fetches and never mutates anything on your side — so most clients call it without asking you to confirm.
{
"name": "DateCalculationforAIAgents",
"arguments": {
"start": "2022-01-01",
"end": "2024-08-31"
}
}You do not name the tool yourself; the model picks it. Asking about 2022-01-01 in the terms this source covers is enough for it to reach for DateCalculationforAIAgents on its own — naming it explicitly also works, and is the way to force the call.
Connecting
One server URL covers every source in the catalog, including this one. Authorization is OAuth: the client opens a browser once, and there is no key to paste into a config file.
{
"mcpServers": {
"vervecontext": {
"url": "https://api.vervecontext.com/v1/mcp"
}
}
}https://api.vervecontext.com/v1/mcpPer-client setup — Claude, Cursor, VS Code, ChatGPT — is on the MCP setup page.
Arguments
These are the properties on the tool's inputSchema, so a well-behaved client validates them before the call is made. Premium arguments are accepted on every plan but only take effect on plans that include them.
| Argument | Type | Description |
|---|---|---|
startRequired | string | The start date for calculating the difference (format: YYYY-MM-DD) date |
endRequired | string | The end date for calculating the difference (format: YYYY-MM-DD) date |
What the model gets back
The result carries a structuredContent object matching the tool's declared outputSchema, so a client reads fields without parsing prose. status is "ok" and error is null on success; a null field means the value was not available for that input, not that the call failed.
{
"status": "ok",
"error": null,
"data": {
"minutes": 524160,
"hours": 8736,
"days": 364,
"weeks": 52,
"months": 11,
"years": 0,
"start": {
"date": "2022-01-01",
"day": "Saturday",
"month": "January",
"year": "2022",
"words": "Saturday, January 1st 2022"
},
"end": {
"date": "2022-12-31",
"day": "Saturday",
"month": "December",
"year": "2022",
"words": "Saturday, December 31st 2022"
}
}
}
Response fields
Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.
| Field | Type | Example | Description |
|---|---|---|---|
minutes | number | 524160 | Total number of minutes between start and end dates |
hours | number | 8736 | Total number of hours between start and end dates |
days | number | 364 | Total number of days between start and end dates |
weeks | number | 52 | Total number of weeks between start and end dates |
months | number | 11 | Total number of months between start and end dates |
years | number | 0 | Total number of years between start and end dates |
start | object | {…} | The start date, broken into its formatted parts |
start.date | string | 2022-01-01 | Formatted start date in YYYY-MM-DD format |
start.dayPremium | string | Saturday | Day of week name for the start date |
start.monthPremium | string | January | Month name for the start date |
start.year | string | 2022 | Year for the start date |
start.wordsPremium | string | Saturday, January 1st 2022 | Human-readable formatted start date with day and month |
end | object | {…} | The end date, broken into its formatted parts |
end.date | string | 2022-12-31 | Formatted end date in YYYY-MM-DD format |
end.dayPremium | string | Saturday | Day of week name for the end date |
end.monthPremium | string | December | Month name for the end date |
end.year | string | 2022 | Year for the end date |
end.wordsPremium | string | Saturday, December 31st 2022 | Human-readable formatted end date with day and month |
Why ground on it
A model can produce something that looks like this answer from its training data, and be confidently out of date or simply wrong. This source returns the current value in a shape you can check, which is the difference between an answer you can cite and one you have to hedge.
Point an evaluation at minutes: it is the field most worth pinning a claim to, and it is either present and current or absent — never plausibly invented.
Failure modes
Errors come back as tool errors carrying a sentence the model can act on, not a bare status code. Error handling covers the full list.
| Status | What it means |
|---|---|
400 / 422 | The arguments did not validate. The message names the offending one. |
401 | The OAuth session is invalid or expired — reconnect the server. |
403 | Blocked by a key restriction or an IP allow-list. Never a bad identity. |
404 | This source is not part of VerveContext. Check the catalog. |
429 | Out of credits, or a brief rate limit. The message tells them apart. |
A call costs 2 credits each time the tool actually runs; a model that reasons about the tool without calling it costs nothing.
Use cases
- Billing Cycle Tracking
- Subscription management platforms calculate elapsed days and months between customer signup dates and renewal periods to generate accurate prorated invoices.
- Milestone Deadline Tracking
- When managing sprint deadlines, engineering tools track remaining weeks and days against delivery targets to flag overdue milestones.
- Hotel Stay Calculation
- Booking engines compute total nights and days between check-in and check-out dates to present stay lengths and determine nightly rate totals.
- Insurance Policy Eligibility
- To determine policy eligibility, insurance portals calculate the total years and months between an incident date and policy inception.
Other ways to use Date Calculation for AI Agents
Set up Date Calculation for AI Agents on VerveContext, or reach the same source a different way. Your VerveContext account and credits work on all of them — one key, one balance.
Related
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