Shield

Name: Shield
Author: ShieldAPI

Protect digital identities and infrastructure by scanning for data breaches, malicious URLs, and compromised credentials.

CommunityOnlineNo sign-inGlobalFreeRead-only

What it can do

Shieldapi.Check Password: Check if a password has been exposed in data breaches (900M+ HIBP hashes). Returns breach count and exposure status.
Shieldapi.Check Password Range: k-Anonymity password range lookup via HIBP. Returns all matching hash suffixes and their breach counts for the given 5-char prefix.
Shieldapi.Check Email: Check if an email has been exposed in known data breaches. Returns breach list, dates, and compromised data types.

What data it sees

Do you need an account

No: the server works without sign-in

Protect digital identities and infrastructure by scanning for data breaches, malicious URLs, and compromised credentials. Secure interactions by detecting prompt injection attacks and evaluating plugin supply chain risks. Monitor the reputation of domains, IPs, and email addresses to defend against phishing and malware.

How to connect

How to connect Shield to Claude

The server address to paste into Claude settings:

https://shieldapi-mcp--shieldapi.run.tools

Open Claude (claude.ai or the desktop app).
Go to Settings → Connectors.
Click Add custom connector.
Paste the server address copied below into Remote MCP server URL and click Add.
In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect Shield to ChatGPT

The server address to paste into ChatGPT settings:

https://shieldapi-mcp--shieldapi.run.tools

Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
Open Settings → Connectors and click Create.
Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect Shield to Cursor

The server address to paste into Cursor settings:

https://shieldapi-mcp--shieldapi.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (9)

Raw names from tools/list. Only developers need these.

shieldapi.check_password	Check if a password has been exposed in data breaches (900M+ HIBP hashes). Returns breach count and exposure status.
shieldapi.check_password_range	k-Anonymity password range lookup via HIBP. Returns all matching hash suffixes and their breach counts for the given 5-char prefix.
shieldapi.check_email	Check if an email has been exposed in known data breaches. Returns breach list, dates, and compromised data types.
shieldapi.check_domain	Analyze domain reputation: DNS records, blacklist status (Spamhaus, SpamCop, SORBS), SPF/DMARC configuration, and SSL certificate details.
shieldapi.check_ip	Analyze IP reputation: blacklist presence, Tor exit node detection, reverse DNS, and geolocation data.
shieldapi.check_url	Scan a URL for phishing, malware, and brand impersonation. Uses URLhaus database and heuristic analysis.
shieldapi.full_scan	Comprehensive security scan that auto-detects the target type (URL, domain, IP, or email) and runs all applicable checks.
shieldapi.check_prompt	Detect prompt injection attacks in text. Scans for 200+ patterns across 8 categories including encoding tricks, multi-language payloads, and obfuscation. Response time <100ms.
shieldapi.scan_skill	Scan an AI skill/plugin for supply chain risks across 8 categories based on Snyk ToxicSkills taxonomy: data exfiltration, privilege escalation, secret exposure, and more.