• PASS
  • FAIL
  • WARN
  • HUMAN

How to validate NFT metadata with your AI

Connect NMKR Cardano to your agent to run automated checks on your asset files. You'll catch formatting errors before they hit the blockchain.

Ask AI about this page

Short answer

How can I check if my Cardano NFT metadata is correct?

Your AI uses the NMKR Cardano MCP to scan your metadata files for compliance with Cardano standards. It identifies missing fields or incorrect structures so you can fix them before minting. You get a clear breakdown of what passed and what failed.

Where every issue lands.

Validation outcomes

The AI sorts your metadata results into these categories.

PASS

Clean metadata

The AI confirms your file meets all Cardano requirements. You're ready to move to the minting stage.

FAIL

Schema errors

The AI finds structural issues or missing mandatory fields. You'll see exactly which parts of the JSON are broken.

WARN

Standard deviations

The AI flags non-critical issues that don't break the file but might cause problems later. You can decide whether to fix these now.

HUMAN

Manual review

The AI flags complex logic or asset descriptions that require your creative eye. You handle the final artistic polish.

The workflow

What your AI does when the metadata arrives.

Your agent handles the heavy lifting of technical auditing.

  1. Scan the file

    Your AI reads the raw JSON data you provide to understand the asset structure.

    validate_nft_metadata

  2. Check standards

    The agent compares your specific fields against the required Cardano metadata schema.

    validate_nft_metadata

  3. Fetch existing data

    If you are updating an existing collection, the AI pulls current details to compare changes.

    get_nft_details

  4. Report errors

    The AI summarizes every discrepancy found during the validation process.

    validate_nft_metadata

Try it

Copy these to start.

Use these prompts to begin your validation task.

Starting points

Replace the bracketed text with your actual file paths or collection IDs.

NMKR Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_6zdfWbZZjgyHkkbp2SzU8DID6EWNFh0jxytNXqEK/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — NMKR capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "nmkr-cardano-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_6zdfWbZZjgyHkkbp2SzU8DID6EWNFh0jxytNXqEK/mcp"
    }
  }
}
Copy into chat04

  • Validate this metadata file for Cardano compliance: [path/to/metadata.json]

  • Check if this NFT metadata follows the correct schema: [link/to/file]

  • Compare this new metadata against the existing NFT details: [NFT_ID]

  • List all errors found in my Cardano NFT metadata file: [path/to/metadata.json]

  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Start here

Connect NMKR Cardano once, then ask.

One click connects this MCP to your client. Your credentials stay encrypted and secure.

Connect NMKR Cardano to your AI

FAQ

Common questions

  • 01

    Can the AI fix the metadata errors for me?

    No. The AI identifies the errors and tells you what is wrong, but you must manually edit the files to ensure they are exactly how you want them.

  • 02

    Will this tool actually mint the NFT on Cardano?

    No. This tool is strictly for validation and retrieving details. It does not have the capability to execute minting transactions.

  • 03

    Does it check for image link validity?

    Yes, the AI can verify that the metadata points to valid URI locations as part of the schema check.

  • 04

    Can I use this with any AI client?

    Yes, as long as your client supports the Model Context Protocol (MCP).

  • 05

    Does the AI store my private keys?

    No. This MCP does not require or store your private keys to perform metadata validation.

  • More questions about NMKR Cardano? The Connector page answers them. See everything the NMKR Cardano Connector can do

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