Bring Regex
to Cursor
Learn how to connect Regex Toolkit to Cursor and start using 3 AI agent tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code.
GDPR Free for SubscribersCompatible with every major AI agent and IDE
Gemini
What is the Regex Toolkit MCP Server?
Parsing unstructured text to find contact information is a classic LLM vulnerability. AI models often "guess" email boundaries or invent fake phone numbers when summarizing text. The Regex Toolkit MCP enforces strict mathematical patterns to guarantee 100% extraction and validation accuracy.
The Superpowers
- Flawless Extraction: Pull every single valid Email, URL, or Phone number from a giant block of text instantly into a clean JSON array.
- Zero-Trust Validation: Ensure that user inputs are structurally perfect before passing them to external databases or CRMs.
- PII Redaction Engine: Instantly mask sensitive client data (
[EMAIL_REDACTED]) before generating public reports or passing context to unsecure layers. - Privacy First (Local): Your data never leaves your infrastructure. The regex engine compiles and executes entirely locally.
Built-in capabilities (3)
Extracts all unique emails, URLs, or phone numbers from a large body of text
Redacts sensitive PII (emails, phones, URLs) from a text blob by replacing them with [REDACTED] tags
Validates if a single string perfectly matches an email, URL, or phone format
Why Cursor?
Cursor's Agent mode turns Regex Toolkit into an in-editor superpower. Ask Cursor to generate code using live data from Regex Toolkit and it fetches, processes, and writes. all in a single agentic loop. 3 tools appear alongside file editing and terminal access, creating a unified development environment grounded in real-time information.
- —
Agent mode turns Cursor into an autonomous coding assistant that can read files, run commands, and call MCP tools without switching context
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Cursor's Composer feature can generate entire files using real-time data fetched through MCP. no copy-pasting from external dashboards
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MCP tools appear alongside built-in tools like file reading and terminal access, creating a unified agentic environment
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VS Code extension compatibility means your existing workflow, keybindings, and extensions all work alongside MCP tools
Regex Toolkit in Cursor
Regex Toolkit and 4,000+ other MCP servers. One platform. One governance layer.
Teams that connect Regex Toolkit to Cursor through Vinkius don't need to source, host, or maintain individual MCP servers. Every tool call runs inside a hardened runtime with credential isolation, DLP, and a signed audit chain.
Raw MCP | Vinkius | |
|---|---|---|
| Server catalog | Find and host yourself | 4,000+ managed |
| Infrastructure | Self-hosted | Sandboxed V8 isolates |
| Credential handling | Plaintext in config | Vault + runtime injection |
| Data loss prevention | None | Configurable DLP policies |
| Kill switch | None | Global instant shutdown |
| Financial circuit breakers | None | Per-server limits + alerts |
| Audit trail | None | Ed25519 signed logs |
| SIEM log streaming | None | Splunk, Datadog, Webhook |
| Honeytokens | None | Canary alerts on leak |
| Custom domains | Not applicable | DNS challenge verified |
| GDPR compliance | Manual effort | Automated purge + export |
Why teams choose Vinkius for Regex Toolkit in Cursor
The Regex Toolkit MCP Server runs on Vinkius-managed infrastructure inside AWS — a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts. All 3 tools execute in hardened sandboxes optimized for native MCP execution.
Your AI agents in Cursor only access the data you authorize, with DLP that blocks sensitive information from ever reaching the model, kill switch for instant shutdown, and up to 60% token savings. Enterprise-grade infrastructure, zero maintenance.
* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure
How Vinkius secures
Regex Toolkit for Cursor
Every tool call from Cursor to the Regex Toolkit MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.
Frequently asked questions
Why use this instead of asking the AI to find the emails?
Because LLMs predict text probabilistically. They might miss emails embedded in weird characters (like contact@company.com. with a trailing dot) or hallucinate non-existent addresses. Regex provides mathematical certainty.
Does the PII masking send data to the cloud?
Never. The mask_sensitive_data tool runs exclusively on your local Javascript engine (V8). It acts as a local firewall, ensuring sensitive strings are redacted before any external processing happens.
What format of phone numbers are supported?
The regex captures international formats with country codes (e.g., +1, +55), optional parentheses for area codes, and spacing/hyphens commonly used globally.
What is Agent mode and why does it matter for MCP?
Agent mode is Cursor's autonomous execution mode where the AI can perform multi-step tasks: reading files, editing code, running terminal commands, and calling MCP tools. Without Agent mode, Cursor operates in a simpler ask-and-answer mode that doesn't support tool calling. Always ensure you're in Agent mode when working with MCP servers.
Where does Cursor store MCP configuration?
Cursor looks for MCP server configurations in a mcp.json file. You can configure servers at the project level (.cursor/mcp.json in your project root) or globally (~/.cursor/mcp.json). Project-level configs take precedence.
Can Cursor use MCP tools in inline edits?
No. MCP tools are only available in Agent mode through the chat panel. Inline completions and Tab suggestions do not trigger MCP tool calls. This is by design. tool calls require user visibility and approval.
How do I verify MCP tools are loaded?
Open Settings → Features → MCP and look for your server name. A green indicator means the server is connected. You can also check Agent mode's available tools by clicking the tools dropdown in the chat panel.
Tools not appearing in Cursor
Ensure you are in Agent mode (not Ask mode). MCP tools only work in Agent mode.
Server shows as disconnected
Check Settings → Features → MCP and verify the server status. Try clicking the refresh button.
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