How do I install CoreNexis API?

Copy the http config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.

Does CoreNexis API need an API key?

No required environment variable is listed on this record.

What transport does CoreNexis API use?

CoreNexis API is reached over HTTP.

When was CoreNexis API last checked?

Last checked 2026-11-08. PDF from HTML or Markdown, OCR, email validation, image conversion and hosting, QR and barcodes.

CoreNexis API MCP server

Power your agent

Add this server

The publisher's own URL. Not a PlugMCP endpoint.

Add to Cursor Add in Claude Add to VS Code Run on PlugMCP

Host a copy with our keys and logs.

Server URL

https://api.corenexis.com/mcp/server

The Claude button above opens Claude with the name and URL filled in. You still confirm it there.

shClaude Code

1claude mcp add --transport http com.corenexis-api https://api.corenexis.com/mcp/server

Run in a terminal.

jsonClaude Desktop

1{2  "mcpServers": {3    "com.corenexis-api": {4      "command": "npx",5      "args": [6        "-y",7        "mcp-remote",8        "https://api.corenexis.com/mcp/server"9      ]10    }11  }12}

claude_desktop_config.json

Remote · HTTPPublisher installStep-by-step: add this in Claude

Remote URL or a command on your machine? How the two installs differ

Run on PlugMCP

Host a copy with our keys and logs.

A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.

Launch

Server facts

Remote

Transport: http
Version: 1.0.1
Last checked

Tools

No tool list yet. Remote servers get one after the first health check.

FAQ

Questions

What is the Corenexis API?

The Corenexis API Platform is a set of production REST APIs for documents, images and data quality. One key, one header, predictable JSON - and a free tier on every API. The same APIs are available to AI assistants through a remote MCP server, so ChatGPT, Claude, n8n or your own agent can generate a PDF, read a scanned receipt or validate an email in the middle of a conversation.


REST API	`https://api.corenexis.com/<api>/v1` - header `x-api-key`
MCP server	`https://api.corenexis.com/mcp/server` - Streamable HTTP, API key
Registry name	`com.corenexis/api` on the Official MCP Registry
n8n	Community node in `Core-Nexis/n8n-nodes-corenexis-api`
Dashboard	https://dash.corenexis.com - keys, subscriptions, usage

APIs

API	Endpoint	What it does	Docs
Markdown to PDF	`POST /markdown-to-pdf/v1`	Markdown into a print-ready PDF or page images	docs
HTML to PDF	`POST /html-to-pdf/v1`	HTML and CSS rendered by a real browser engine into a PDF or screenshot	docs
Image to Text (OCR)	`/image-ocr/v1`	Text out of photos, screenshots, scans and receipts	docs
PDF to Text (OCR)	`/pdf-to-text/v1`	Text from PDFs, scanned pages included, as a background job	docs
Email Validator	`/email-validator/v1`	Syntax, domain, mailbox and risk checks	docs
Disposable Email Detector	`/disposable-email-validator/v1`	Tell a throwaway address from a real one	docs
Image Conversion	`/image-conversion/v1`	Convert, resize and compress images	docs
Image CDN	`/image-cdn/v3`	Host an image and get a fast delivery link	docs
QR Code and Barcode	`/qr-barcode/v1`	QR, UPI QR, Code128, EAN-13 and UPC-A codes	docs

Every request and response example: docs/apis.md.

Quick start

Sign up at https://dash.corenexis.com/auth/signup and create a key at https://dash.corenexis.com/api-keys.
Subscribe to the APIs you need (each has a free tier). One key works for all of them.
Call an API:

curl -X POST https://api.corenexis.com/email-validator/v1 \
  -H "x-api-key: your_api_key" \
  -H "Content-Type: application/json" \
  -d '{"email": "[email protected]"}'

MCP server

Point any MCP client at https://api.corenexis.com/mcp/server with your key in x-api-key.

{
  "mcpServers": {
    "corenexis": {
      "type": "http",
      "url": "https://api.corenexis.com/mcp/server",
      "headers": { "x-api-key": "your_api_key" }
    }
  }
}

claude mcp add --transport http corenexis https://api.corenexis.com/mcp/server \
  --header "x-api-key: your_api_key"

MCP Client node: connection HTTP Streamable, endpoint https://api.corenexis.com/mcp/server, authentication Header Auth with name x-api-key and your key as the value.

curl -X POST "https://api.corenexis.com/mcp/server" \
  -H "x-api-key: your_api_key" \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

Tools

Tool	What it does	Quota
`corenexis_list_apis`	Every API with its tools, docs and subscribe links	free
`corenexis_account`	Check the key and the account	free
`corenexis_subscriptions`	Subscribed APIs with plan, status, renewal and usage	free
`corenexis_api_details`	One API's plans, features and limits	free
`markdown_to_pdf`	Markdown to PDF or images, returns a hosted link	1 call
`html_to_pdf`	HTML and CSS to PDF or image with a browser engine	1 call
`image_to_text`	OCR of a photo, screenshot or scan from a URL or base64	1 call
`pdf_to_text`	Start PDF text extraction, returns a `job_id`	1 call
`pdf_to_text_status`	Collect a `pdf_to_text` result	free
`email_validate`	Full email check: syntax, domain, mailbox, risk	1 call
`disposable_email_check`	Is the address from a disposable provider	1 call
`image_convert`	Convert, resize or compress an image, returns a hosted link	1 call
`image_cdn_upload`	Host an image and get a delivery link	1 call
`qr_barcode_generate`	QR, UPI QR or barcode image, returns a hosted link	1 call

The MCP server holds no keys of its own: every tool call is the same REST call made with your key and counts against the same quota. Full reference: docs/mcp.md.

CoreNexis API

Add this server

Host a copy with our keys and logs.

Server facts

Tools

Questions

How do I install CoreNexis API?

Does CoreNexis API need an API key?

What transport does CoreNexis API use?

When was CoreNexis API last checked?

Documentation

What is the Corenexis API?

APIs

Quick start

MCP server

Tools

Screenshots

Links