ContrastAPI

Name: ContrastAPI
Author: UPinar

by UPinarversion 1.36.4i★ –iRuns in the cloud

Registry namecom.contrastcyber/api

Install

Overview

Description from the maker (original English)

55 tools, 7 Resources, Sigma rules, email SPF/DMARC, MITRE, CVE/KEV, risk_score. No key.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi0 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Chat & email

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 0 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://api.contrastcyber.com/mcp/

Run this in your terminal

claude mcp add --transport http api https://api.contrastcyber.com/mcp/

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "api": {
      "url": "https://api.contrastcyber.com/mcp/"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "api": {
      "type": "http",
      "url": "https://api.contrastcyber.com/mcp/"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://api.contrastcyber.com/mcp/

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

! Caution
Maker matches the repo
The publisher (contrastcyber.com) is not the repo owner (UPinar); someone else may have listed it
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Chat & emaili

More stars than 0% of the other 1762 servers in this category
Published to the registry more recently than 61% of the other 1762 servers in this category
Basic checks equal to or better than 40% of the other 1762 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is ContrastAPI safe?

It passed 0 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.36.4) reached the registry 19 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Vexa, emailmd, MCP WhatsApp Cloud

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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Runs in the cloud★ 2,949Apache-2.0Updated 2 months ago

Install

emailmd

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Render markdown into email-safe HTML, lint drafts for deliverability problems, and preview emails.

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MCP WhatsApp Cloud

by codespar

MCP server for WhatsApp Cloud API (Meta) — messages, media, and templates via Graph API

Runs on your computer★ 277MITUpdated 5 months ago

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

ContrastAPI — 55 Security Tools + 7 MCP Resources for AI Agents

Security intelligence, built for AI agents. Give your agent grounded answers about vulnerabilities, threats, and attack surface — backed by authoritative sources (NVD, CISA KEV, FIRST EPSS, MITRE ATLAS & D3FEND), never guesswork. CVE/KEV/CWE lookup with EPSS exploit-probability and composite risk scoring, domain & IP investigation, IOC enrichment, code-security checks, and live web intelligence. 55 tools, 7 Resources, and 3 Prompts — free, no API key, no signup.

中文 · Live: api.contrastcyber.com

Documentation

[API Documentation](docs/API_Documentation.md) — REST reference: 60+ endpoints, authentication, rate limits, token costs, and response envelope.
[MCP Documentation](docs/MCP_Documentation.md) — MCP tool-selection guide, 7 Resources, 3 Prompts, and copy-paste agent prompts.

Setup (MCP)

Any MCP client

"mcpServers": { "contrastapi": { "command": "npx", "args": ["-y", "mcp-remote", "https://api.contrastcyber.com/mcp/"] } } }

Restart your agent. Other clients (Python SDK, Node SDK, cURL, VS Code): [mcp-setup](https://api.contrastcyber.com/mcp-setup) · [quickstart](https://api.contrastcyber.com/quickstart)

Claude Desktop — one-click extension

Grab the .mcpb file from the [latest release](https://github.com/UPinar/contrastapi/releases/latest) and double-click it (or Claude Desktop → Settings → Extensions → Install Extension…). No signup, no API key — all 55 tools ready immediately.

SDKs

pip install contrastapi      # Python 3.10+ — sync + async, typed responses, shortcut helpers

npm install contrastapi # Node 14+ — concrete TypeScript types, 14 namespaces

Both SDKs cover every HTTP endpoint and MCP tool — CVE/KEV/CWE, ATLAS, D3FEND, Sigma rules, email security posture, domain, IP, IOC, code security, and web intelligence — with wire-exact response shapes and a typed exception hierarchy that mirrors the API error envelope. They also expose MCP Resources for browsing the ATLAS, D3FEND, and CWE catalogs (see docs/MCP_Documentation.md) and a conditional triage Prompt (see docs/MCP_Documentation.md#contrast-triage). Web-intelligence tools — robots_txt, redirect_chain, email_verify, brand_assets, seo_audit, geo_audit — ship with an explicit ethical floor: per-target throttling, robots.txt respected, no SMTP probing.

Links

OpenAPI: openapi.json

Also available on

Smithery · npm · VS Code Marketplace · Awesome OSINT MCP · RapidAPI

Multi-agent verdict metadata

Responses include a verdict block — deterministic, falsifiable_fields, data_age_seconds, sources_queried / sources_unavailable, completeness — so a verifier agent can independently re-derive specific fields from the upstream authority (NVD, RDAP, CT logs, URLhaus). Probe GET /v1/capabilities for "verdict_metadata": true.

CVE responses also embed next_calls: list[PivotHint] — {tool, input, reason} triples that suggest the next MCP tool to call (e.g. kev_detail when kev.in_kev=true, cwe_lookup when cwe_id is set). Agents chain workflows without manual prompting.

MIT

ContrastAPI

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Chat & emaili

Common questions

Alternatives

Vexa

emailmd

MCP WhatsApp Cloud

README from the maker

ContrastAPI — 55 Security Tools + 7 MCP Resources for AI Agents

Documentation

Setup (MCP)

Any MCP client

Claude Desktop — one-click extension

SDKs

Links