• TYPE ERROR
  • SCHEMA GAP
  • VALID DATA
  • HUMAN ACTION

How to debug agent data types with your AI

Connect ReqBin to your agent to inspect outgoing JSON payloads. You'll see exactly how your variables are formatted before they hit your API.

Ask AI about this page

Short answer

Is my agent sending strings instead of numbers?

Use ReqBin to intercept the JSON your agent sends. The AI will inspect the payload to confirm if values like IDs or prices are correctly typed as numbers. You'll get a clear breakdown of the data structure.

Debug outcomes.

Where your issues land.

The AI uses ReqBin to categorize the specific type of data mismatch it finds.

TYPE ERROR

Identify string mismatches

The AI flags variables that should be numbers but are wrapped in quotes. You'll see exactly which fields are causing the type error.

SCHEMA GAP

Check missing keys

The agent compares the sent JSON against your expected structure. It identifies if required fields are missing from the payload.

VALID DATA

Confirm correct types

The AI verifies that integers and floats are passed without quotes. You get confirmation that your data matches your API requirements.

HUMAN ACTION

Fix the source

The AI points out the specific variable that failed validation. You must manually update your agent's logic or prompt to fix it.

The workflow

What your AI does when the request arrives.

The AI uses the ReqBin MCP to capture and analyze the data your agent is attempting to transmit.

  1. Capture payload

    The AI sends the agent's data to the endpoint to see the raw JSON structure.

    echo_post_json

  2. Inspect types

    The agent looks at the values to see if numbers are being treated as strings.

    echo_post_json

  3. Validate schema

    The AI checks the received object against your intended data model.

    echo_post_json

  4. Report findings

    The agent summarizes the type mismatches so you know what to change.

    echo_post_json

Try it

Copy these to start.

Paste these into your chat to begin debugging.

Starting points

Swap out the variable names and endpoint details for your own.

ReqBin Connector

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

Connector linkhttps://edge.vinkius.com/vk_preview_aR9WI4Mp6olzIvTKIzYgIY1lPabc2yalWWCXXHI5/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 — ReqBin capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "reqbin-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_aR9WI4Mp6olzIvTKIzYgIY1lPabc2yalWWCXXHI5/mcp"
    }
  }
}
Copy into chat04

  • Use ReqBin to check if the 'price' variable in my last request was a number or a string.

  • Inspect the JSON payload for my Stripe integration and tell me if the IDs are integers.

  • Run an echo_post_json test on my current agent output to verify the schema is correct.

  • Check the last request sent to my database and list any variables that are currently formatted as strings.

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

Start here

Connect ReqBin once, then ask.

Link the MCP to your client and you're ready. Your credentials stay encrypted on our side.

Connect ReqBin to your AI

FAQ

How this task behaves.

  • 01

    Can the AI fix my code for me?

    No. The AI identifies the type errors, but you have to manually update your code or agent prompts.

  • 02

    Will this change the data sent to my real API?

    No. The AI uses the echo tool to inspect the data, so it doesn't interfere with your live production traffic.

  • 03

    Can I use this to test different JSON structures?

    Yes. You can ask the AI to send various payloads through the tool to see how they are handled.

  • 04

    Does the AI store my sensitive API keys?

    No. Vinkius manages the connection securely, and the AI only sees the data you tell it to inspect.

  • 05

    Can the AI delete data from my database?

    No. This MCP only has the capability to post JSON to an endpoint for inspection.

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

Connect ReqBin to Claude, Cursor, ChatGPT & more