Who it is for
Developers or integration engineers validating request bodies before sending them to an API.
AI Connectors · Developer Tools
Payload Completeness Checker
Checks a JSON payload against a required-field schema
Overview
What Payload Completeness Checker does
This app compares a JSON object against a schema of required fields and reports the gap. Two inputs are expected: the payload itself, and a required_schema object describing what has to be present.
The check covers two things. It confirms that required keys exist, and it compares each value's type against what the schema expects at a basic level. The response comes back structured, stating whether the payload passed, which fields were absent, and which held a value of the wrong type.
The boundaries are set out plainly. It is read-only. It does not send the payload anywhere, call other systems, retain data, alter the object, correct the problems it finds, or make any judgement about business logic.
What stands out
It reports problems without touching the payload, which keeps it usable as a pre-flight check inside a larger workflow.
Availability
Where Payload Completeness Checker is listed
Payload Completeness Checker 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
- Check if this payload is ready for submission.
- Check this payload for missing required fields.
- Check this payload for invalid field types.
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This is an independent catalogue entry compiled by Node8 from Payload Completeness Checker'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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