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Vinkius

Node Crypto Connector for AI agents.

1 live capability

Sign API requests and verify webhooks with perfect cryptographic accuracy.

Live agent request Node Crypto / Connector

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AI Agent

Why people use Node Crypto

Crypto Hash Engine for Secure Webhook Verification

This Connector takes that manual work off your plate. Your agent calls the capability, sends the payload and secret, and gets the exact hex digest back in one go. It turns a five-minute debugging headache into a three-second automated task.

  • Claude
  • ChatGPT
  • Gemini
  • Cursor
  • Visual Studio Code
  • Windsurf

What Vinkius changes

Your agent gets 100% accurate cryptographic signatures instead of hallucinated guesses.

Use it from Claude, ChatGPT, Cursor or another AI client you already have.

One account · 5,900+ Connectors

  1. Real-world use case 01

    Stripe Webhook Verification

    An engineer asks the agent to verify a Stripe payload.

  2. Real-world use case 02

    Shopify API Signing

    A developer needs to sign a request to Shopify.

  3. Real-world use case 03

    File Integrity Checks

    A user wants to check if a file was corrupted.

Complete set · 1capability

The complete Node Crypto capability set.

These are the exact actions your AI can choose when you ask it to work with Node Crypto.

Capability set01 / 01

01

1 capability in this set.

Part of 1 available through Node Crypto.

  1. 01 Capability

    Hash payload

    Generates a mathematical cryptographic hash or HMAC for signing webhooks and API payloads. You can specify the algorithm and provide a secret key to ensure 100% accuracy.

Set up in minutes

One URL. Then ask Node Crypto to work.

Claude and ChatGPT only need the Connector URL. Copy it once, add it in settings, and use Node Crypto from the conversation.

Choose your client

Live preview
Advanced clients IDE · CLI

Claude · Web + desktop

Official guide ↗

Connector URL · ready to paste

Streamable HTTP
https://edge.vinkius.com/vk_preview_ExrheqLNp398PCQGOrBOD5gdyHYDjJWnoq5YE8Oh/mcp
  1. Step 01

    Open Connectors

    In Claude Web or Claude Desktop, open Settings and choose Connectors.

  2. Step 02

    Add the URL

    Choose Add custom connector, name it Node Crypto, and paste the URL above.

  3. Step 03

    Turn it on in chat

    Select +, open Connectors, and enable Node Crypto for the conversation.

Where the request belongs

Work Node Crypto can move forward.

Built around the request

This is for the backend engineer who needs to secure webhooks or the security analyst who's tired of manual hash verification failing in production.

01

Backend Engineer

Signs production API requests for Stripe or Shopify integrations on a Tuesday afternoon.

02

Security Engineer

Verifies incoming webhook signatures to prevent spoofing and unauthorized data access.

03

Full-stack Developer

Handles cryptographic requirements without writing custom Node.js crypto boilerplate for every endpoint.

Build the capability set

Add more capabilities.

Each Connector adds new actions and data without changing how you work.

Browse Connectors
Hash Checksum Calculator logo
01 Managed Connector

Hash Checksum Calculator

Generate, compare, and validate cryptographic and non-cryptographic hashes like MD5, SHA-256, and CRC32.

View Connector
Cryptographic Action Attestor logo
02 2 capabilities

Cryptographic Action Attestor

Creates a tamper-proof audit trail of every agent action using SHA-256 hashing.

View Connector
Webhook HMAC Signature Validator logo
03 3 capabilities

Webhook HMAC Signature Validator

Verify the authenticity of incoming webhook payloads by validating their HMAC signatures.

View Connector
Object Hash Engine logo
04 1 capability

Object Hash Engine

Generate deterministic SHA-256 fingerprints of any JSON object. Keys are automatically sorted so {b:2,a:1} and {a:1,b:2} always produce the exact same hash. Essential for deduplication.

View Connector
CRC32 Checksum Engine logo
05 1 capability

CRC32 Checksum Engine

Calculate CRC32 checksums instantly. the same algorithm inside ZIP, PNG, Ethernet, and MPEG-2. Pure JS, zero dependencies, three output formats.

View Connector
Bcrypt Hash Engine logo
06 2 capabilities

Bcrypt Hash Engine

Hash and verify passwords with the industry-standard bcrypt algorithm. Two capabilities in one: hash with configurable salt rounds, and verify against stored hashes. Pure JS. zero compilation.

View Connector

Bring your own AI

Change the model, client or framework. Keep Node Crypto connected.

  • Claude
  • ChatGPT
  • Gemini
  • Cursor
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  • CrewAI
  • Vercel AI SDK

Before you connect

Questions about Node Crypto.

The practical details behind the request, access and result.

Can the Crypto Hash Engine MCP handle Stripe webhooks?

Yes, it's specifically designed to sign and verify webhooks using HMAC-SHA256, which is the standard for platforms like Stripe.

Why can't I just ask my AI to generate the hash?

AI models are language predictors, not calculators. They often hallucinate strings that look like hashes but are mathematically incorrect. This Connector uses the real Node.js crypto library for 100% accuracy.

Does the Crypto Hash Engine MCP support different algorithms?

It supports MD5, SHA1, SHA256, and SHA512, so you can use it for both modern security and legacy system requirements.

How does the Crypto Hash Engine MCP handle secret keys?

You provide the secret key as an optional parameter when signing a payload, allowing your agent to perform secure HMAC signing without exposing the key in the prompt logic.

Is it safe to use for production API signing?

Yes, because it offloads the cryptographic math to the native V8 engine, it provides the mathematical certainty needed for production environments.

Can I use the Crypto Hash Engine MCP to verify file integrity?

You can pass a string of file contents to the capability to generate an MD5 or SHA-256 checksum, then compare it against your expected value.

What algorithms are supported?

MD5, SHA-1, SHA-256, and SHA-512.

Can it do HMAC signing?

Yes, just provide the secret parameter and it will generate the HMAC variant.

Is the secret stored anywhere?

Absolutely not. The hashing occurs in real-time in memory and the secret is immediately discarded.

One connection away

Give your agent a direct line to Node Crypto.

Connect Node Crypto once. Keep it beside 5,900+ managed Connectors when the next task needs more.

Explore every Connector No credit card required · Free tier available