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Vinkius

JSON Web Token Connector for AI agents.

1 live capability

Cryptographically verify API authentication tokens and session keys.

Live agent request JSON Web Token / Connector

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AI Agent

Why people use JSON Web Token

JWT Decoder & Verifier for Secure API Authentication

With this Connector, you can stay entirely within your local environment. Your agent handles the signature verification automatically, giving you a clear 'pass' or 'fail' on every token you inspect.

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

What Vinkius changes

You get cryptographically sound token validation without trusting the AI to guess the security.

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

One account · 5,900+ Connectors

  1. Real-world use case 01

    Debugging a failing login

    A developer asks the agent to check why a token is rejected; the capability confirms the signature is invalid.

  2. Real-world use case 02

    Webhook validation

    A user wants to ensure a Stripe webhook is real; the agent uses the capability to check the signature against a secret.

  3. Real-world use case 03

    Permission auditing

    An admin asks the agent to list roles in a batch of tokens; the capability extracts them from the payload.

Complete set · 1capability

The complete JSON Web Token capability set.

These are the exact actions your AI can choose when you ask it to work with JSON Web Token.

Capability set01 / 01

01

1 capability in this set.

Part of 1 available through JSON Web Token.

  1. 01 Capability

    Decode jwt

    Pass a JWT and secret key to verify the signature and extract the payload. This blocks forged tokens.

Set up in minutes

One URL. Then ask JSON Web Token to work.

Claude and ChatGPT only need the Connector URL. Copy it once, add it in settings, and use JSON Web Token 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_D5R4DSb6SK0l9HMwb0HCmTETZzhB9BBHQbV1DXPU/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 JSON Web Token, and paste the URL above.

  3. Step 03

    Turn it on in chat

    Select +, open Connectors, and enable JSON Web Token for the conversation.

Where the request belongs

Work JSON Web Token can move forward.

Built around the request

The security engineer who needs to audit auth flows without manually running scripts, or the backend developer who is tired of manually decoding tokens to find a specific user ID. It's for anyone who needs to verify cryptographic signatures without leaving their local environment.

01

Security Engineer

Verifying the integrity of incoming webhooks or third-party API requests during a security audit.

02

Backend Developer

Debugging why a specific token is being rejected by the production environment during a deployment.

03

DevOps Engineer

Checking if session tokens are correctly signed and formatted across different environments.

Build the capability set

Add more capabilities.

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

Browse Connectors
JWT Claims Validator logo
01 1 capability

JWT Claims Validator

Validate JWT structure and expiration claims without signature verification.

View Connector
JWT Payload Extractor logo
02 3 capabilities New

JWT Payload Extractor

Extract and decode JWT payloads deterministically without cryptographic verification.

View Connector
Deterministic JWT Inspector logo
03 1 capability

Deterministic JWT Inspector

Transform your AI into a cybersecurity diagnostic capability. Instantly decode and inspect JSON Web Tokens (Headers, Payloads, and Expiry metadata) without requiring signature keys.

View Connector
JWT Decoder & Validator logo
04 4 capabilities

JWT Decoder & Validator

Decode JWT segments and verify cryptographic signatures and temporal claims.

View Connector
JWT & Base64 Decoder logo
05 2 capabilities

JWT & Base64 Decoder

Stop hallucinating Base64 translations. Instantly decode complex JWT tokens into readable headers and payloads with exact expiration mathematics.

View Connector
Webhook HMAC Signature Validator logo
06 3 capabilities

Webhook HMAC Signature Validator

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

View Connector

Bring your own AI

Change the model, client or framework. Keep JSON Web Token connected.

  • Claude
  • ChatGPT
  • Gemini
  • Cursor
  • VS Code
  • Windsurf
  • ZCode
  • Cline
  • Zed
  • Continue
  • Kiro
  • Roo Code
  • Zencoder
  • Goose
  • Void
  • Augment Code
  • Amp
  • Qodo
  • Tabnine
  • Pieces
  • Sourcegraph Cody
  • JetBrains
  • Warp
  • Amazon Q
  • Antigravity
  • BoltAI
  • Raycast
  • Jan
  • LM Studio
  • AnythingLLM
  • Open WebUI
  • Msty
  • Cherry Studio
  • LibreChat
  • TypingMind
  • Chorus
  • 5ire
  • n8n
  • LangChain
  • LlamaIndex
  • CrewAI
  • Vercel AI SDK

Before you connect

Questions about JSON Web Token.

The practical details behind the request, access and result.

Can the JWT Decoder & Verifier check if a token is forged?

Yes, it performs a cryptographic signature check against your secret or public key to ensure the token is authentic.

Does the JWT Decoder & Verifier work offline?

Yes, all decoding and verification happen locally on your machine, so your keys never leave your environment.

Can I use the JWT Decoder & Verifier for my private API keys?

Yes, you can provide your secret key to the capability to verify the integrity of your private API tokens.

Is the JWT Decoder & Verifier safe for my secrets?

Yes, because it processes everything locally. It does not send your keys or tokens to any external service.

How does the JWT Decoder & Verifier handle expired tokens?

It automatically checks the expiration claim and will notify you if the token is no longer valid.

Can the JWT Decoder & Verifier read user roles?

Yes, it extracts all claims from the payload, including user IDs, roles, and permission scopes.

Can I decode a token without the secret?

Yes, if you omit the secret, it will only decode the payload, but it will not verify authenticity.

Does it check expiration dates?

Yes, if the secret is provided, it will automatically throw an error if the token is expired.

What algorithms does it support?

It supports standard JWT algorithms including HS256, HS384, and HS512.

One connection away

Give your agent a direct line to JSON Web Token.

Connect JSON Web Token once. Keep it beside 5,900+ managed Connectors when the next task needs more.

Explore every Connector No credit card required · Free tier available