Who it is for
Developers checking form submissions or API inputs against a fixed field list.
AI Connectors · Developer Tools
Required Fields Validator
Checks objects against a list of required fields
Overview
What Required Fields Validator does
Required Fields Validator takes an object plus a list of fields that must be present, then reports the difference. The response is structured rather than prose, naming the fields that are absent and the ones that are invalid.
The scope is deliberately narrow. It is meant for checking structured data, not for interpreting free-form text, so input needs to arrive already shaped as an object with named keys.
The example prompts show the shape of the work: validating a form against name, email, and location; validating the same form with location left out; and validating one that carries fields beyond the required list.
What stands out
It answers one narrow question, and the listing says outright that free-form analysis is out of scope.
Availability
Where Required Fields Validator is listed
Required Fields 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
- Policies published
- Privacy policy · Terms of service
- Official listing
- Open in ChatGPT
- Snapshot
- August 2026
Example prompts from the listing
- Validate form with required fields: name, email, location
- Validate form missing location
- Validate form with extra fields
Nearby
Other Developer Tools connectors
Payload Completeness Checker
Checks a JSON payload against a required-field schema
ChatGPT
Date Range Validator
Validates a start and end date pair
ChatGPT
Lightrun
Live runtime snapshots and metrics from running applications
Claude
Magicweave
Game economy design, validation, and simulation for Magicweave backends
Claude
OctoPerf MCP
Load test scenarios, runs, and results on the OctoPerf platform
Claude
Vantage
Cost analysis for cloud, SaaS, and AI spend
ChatGPT
This is an independent catalogue entry compiled by Node8 from Required Fields 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.
Want your company reachable inside ChatGPT and Claude?
Node8 builds MCP servers end to end: deciding which tools are worth exposing, the authentication and permission model, the review submissions, and the onboarding that gets them used. One server serves ChatGPT, Claude, and Microsoft Copilot.