# Payload Completeness Checker — AI Connector

Checks a JSON payload against a required-field schema. Payload Completeness Checker is listed under Developer Tools in the ChatGPT apps directory, built by Beike Yan.

Source: https://node8.ai/ai-connectors/developer-tools/payload-completeness-checker/

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

# Payload Completeness Checker

Checks a JSON payload against a required-field schema

Listed in ChatGPT

[ChatGPT listing](https://chatgpt.com/plugins/payload-completeness-checker?open_in_app) [payload-completeness-checker.onrender.com](https://payload-completeness-checker.onrender.com)

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.

### Who it is for

Developers or integration engineers validating request bodies before sending them to an API.

### 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

Website

[payload-completeness-checker.onrender.com](https://payload-completeness-checker.onrender.com)

Policies published

Privacy policy · Terms of service

Official listing

[Open in ChatGPT](https://chatgpt.com/plugins/payload-completeness-checker?open_in_app)

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.

Nearby

## Other Developer Tools connectors

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

Checks objects against a list of required fields

ChatGPT

### [API Documentation Checker](https://node8.ai/ai-connectors/developer-tools/api-documentation-checker/)

Compare API documentation against a stated contract

ChatGPT

### [Date Range Validator](https://node8.ai/ai-connectors/developer-tools/date-range-validator/)

Validates a start and end date pair

ChatGPT

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

Live runtime snapshots and metrics from running applications

Claude

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

Physical mail dispatch and postal address verification

Claude

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

Checks generated UI code against a design token set

Claude

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

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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