# API Documentation Checker — AI Connector

Compare API documentation against a stated contract. API Documentation Checker is listed under Developer Tools in the ChatGPT apps directory, built by BEIKE YAN.

Source: https://node8.ai/ai-connectors/developer-tools/api-documentation-checker/

---

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

# API Documentation Checker

Compare API documentation against a stated contract

Listed in ChatGPT

[ChatGPT listing](https://chatgpt.com/plugins/api-documentation-checker?open_in_app) [api-documentation-checker.sidcraigau.workers.dev](https://api-documentation-checker.sidcraigau.workers.dev)

Overview

## What API Documentation Checker does

This app works on API contracts and the documentation written around them. It pulls the details out of a contract, meaning endpoints, parameters, responses, and error cases, then checks whether the accompanying documentation actually covers them. It can also diff two versions of a contract and report what changed between them.

Output is structured and tied to evidence. The record is clear that analysis stays inside what has been supplied: nothing is inferred about an API beyond the text handed to it.

That limit shapes what the results are good for. A gap the checker reports is a gap between two documents in front of it, not a judgement about the service behind them.

### Who it is for

API teams and technical writers auditing whether reference docs match the contract they describe.

### What stands out

It declines to reason past the supplied material, which keeps coverage checks and version diffs anchored to the text itself.

Availability

## Where API Documentation Checker is listed

API Documentation 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

July 2026

Authentication

Authenticates when installed

Website

[api-documentation-checker.sidcraigau.workers.dev](https://api-documentation-checker.sidcraigau.workers.dev)

Policies published

Privacy policy · Terms of service

Official listing

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

Snapshot

August 2026

### Example prompts from the listing

-   Extract the endpoints, parameters, responses, and errors from this API contract.
-   Check whether this documentation fully covers the stated API contract.
-   Compare these two API contract versions and identify the changes.

Nearby

## Other Developer Tools connectors

### [Mintlify](https://node8.ai/ai-connectors/developer-tools/mintlify-mcp/)

Edit and manage Mintlify documentation sites

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

### [3Min API](https://node8.ai/ai-connectors/developer-tools/3min-api/)

REST API creation from a JSON schema

ChatGPT

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

No-code mobile and web app building by chat

ChatGPT

### [API Response Cleaner](https://node8.ai/ai-connectors/developer-tools/api-response-cleaner/)

Trim API responses down to requested fields

ChatGPT

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

Cloudflare platform guidance plus authenticated account access in Codex

ChatGPT

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

This is an independent catalogue entry compiled by Node8 from API Documentation 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.

## 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.

[See how it works](https://node8.ai/mcp) Book a strategy session