# Date Range Validator — AI Connector

Validates a start and end date pair. Date Range Validator is listed under Developer Tools in the ChatGPT apps directory, built by Beike Yan.

Source: https://node8.ai/ai-connectors/developer-tools/date-range-validator/

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[AI Connectors](https://node8.ai/ai-connectors/) · [Developer Tools](https://node8.ai/ai-connectors/developer-tools/)

# Date Range Validator

Validates a start and end date pair

Listed in ChatGPT

[ChatGPT listing](https://chatgpt.com/plugins/date-range-validator?open_in_app) [date-range-validator.onrender.com](https://date-range-validator.onrender.com)

Overview

## What Date Range Validator does

Date Range Validator takes a start date and an end date and checks whether the pair holds together. When it does, the app also calculates how long the interval is.

Bad input is handled explicitly. Fields that are missing or values that do not parse come back as errors rather than as a guess, and results arrive in a fixed structure so a calling workflow can rely on the shape.

No external action of any kind is performed. The record includes an out-of-scope example to make the boundary clear: asking whether a given range is suitable for an email is not a question this app answers. Beike Yan publishes it.

### Who it is for

Anyone wiring date validation into an agent workflow that needs the same answer shape every time.

### What stands out

The scope is narrow by design, and the record names the kind of question it will decline.

Availability

## Where Date Range Validator is listed

Date Range Validator is listed in the ChatGPT apps directory only. Beike Yan has no connector under the same domain in the Claude directory; 392 of the 3,150 products here are on both marketplaces, and this is not one of them.

ChatGPT apps are built on MCP, and the same server can back a Claude connector, so the absence is a distribution decision rather than a technical one.

ChatGPT listing

## In the ChatGPT apps directory

Developer

Beike Yan

Filed under

Developer Tools

Listed since

June 2026

Authentication

Authenticates when installed

Website

[date-range-validator.onrender.com](https://date-range-validator.onrender.com)

Policies published

Privacy policy · Terms of service

Official listing

[Open in ChatGPT](https://chatgpt.com/plugins/date-range-validator?open_in_app)

Snapshot

August 2026

### Example prompts from the listing

-   Validate date range: start="2026-06-01", end="2026-06-10"
-   Out-of-scope input: "Is this range okay for email?"

Nearby

## Other Developer Tools connectors

### [Context7](https://node8.ai/ai-connectors/developer-tools/context7/)

Current library documentation pulled into the model's context

Claude · ChatGPT

### [Payload Completeness Checker](https://node8.ai/ai-connectors/developer-tools/payload-completeness-checker/)

Checks a JSON payload against a required-field schema

ChatGPT

### [PostGrid](https://node8.ai/ai-connectors/developer-tools/postgrid/)

Physical mail dispatch and postal address verification

Claude

### [Required Fields Validator](https://node8.ai/ai-connectors/developer-tools/required-fields-validator/)

Checks objects against a list of required fields

ChatGPT

### [swatchdog](https://node8.ai/ai-connectors/developer-tools/swatchdog/)

Checks generated UI code against a design token set

Claude

### [PageShare](https://node8.ai/ai-connectors/developer-tools/pageshare/)

Publishing and access control for ChatGPT-generated HTML pages

ChatGPT

[All 188 Developer Tools connectors](https://node8.ai/ai-connectors/developer-tools/)

This is an independent catalogue entry compiled by Node8 from Date Range Validator's public marketplace listing as it stood in August 2026. Listing facts come from the marketplaces; the comparisons against the rest of the directory and any live-endpoint measurements are Node8's. Node8 is not affiliated with Beike Yan, and inclusion here is not an endorsement.

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