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Payload Validator

https://payload-validator.gumballtools.com/api/mcp

● healthy

Validate JSON, YAML, XML and CSV with exact line/column errors and silent-corruption warnings.

Transport

streamable-http

Auth

—

Cost

—

Protocol revision

2025-11-25

negotiated, not declared

Listed in

Directories this entry was found in.

mcp-registry

How to connect

MCP endpoint (streamable-http)

https://payload-validator.gumballtools.com/api/mcp

JSON-RPC initialize probe

curl -X POST https://payload-validator.gumballtools.com/api/mcp \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{}}'

Homepage

https://payload-validator.gumballtools.com

Source code

https://github.com/bwalvoord/gumball