Server data from the Official MCP Registry
JSON syntax validation, JSON Schema checking, structure stats. x402 micropayment.
About
JSON syntax validation, JSON Schema checking, structure stats. x402 micropayment.
Remote endpoints: sse: https://json-validator.api.klymax402.com/mcp
Security Report
Valid MCP server (1 strong, 0 medium validity signals). 5 known CVEs in dependencies Imported from the Official MCP Registry. Trust signals: trusted author (135/139 approved).
1 tool verified · Open access · 5 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
How to Connect
Remote Plugin
No local installation needed. Your AI client connects to the remote endpoint directly.
Add this to your MCP configuration to connect:
{
"mcpServers": {
"io-github-br0ski777-json-validator": {
"url": "https://json-validator.api.klymax402.com/mcp"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
JSON Validator API
JSON validator with optional JSON Schema validation and structure stats. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.
Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.
Quickstart -- MCP
Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):
{
"mcpServers": {
"json-validator": {
"url": "https://json-validator.api.klymax402.com/mcp"
}
}
}
Quickstart -- HTTP (x402)
curl -X POST "https://json-validator.api.klymax402.com/api/validate" \
-H "Content-Type: application/json" \
-d '{"json":"..."}'
# -> 402 Payment Required, with an x402 payment challenge in the response body
Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.
Tools
| Tool | Method | Path | Price | Description |
|---|---|---|---|---|
data_validate_json | POST | /api/validate | $0.003 | Validate JSON and optionally check against a JSON Schema |
data_validate_json
Use this when you need to validate JSON syntax or validate JSON data against a JSON Schema. Returns validity status, parse errors, formatted JSON, and structure stats (depth, key count, arrays, total size). Do NOT use for password checking — use security_check_password. Do NOT use for hash generation — use crypto_generate_hash. Do NOT use for cron expressions — use util_parse_cron.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
json | string | yes | JSON string to validate |
schema | object | no | Optional JSON Schema to validate against |
Example agent prompts
- "Validate JSON syntax or validate JSON data against a JSON Schema"
Payment
- Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
- Network: Base L2 (
eip155:8453) - Asset: USDC
- Facilitator: Coinbase CDP (primary), PayAI (fallback)
Part of klymax402
100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.
- Catalog: https://klymax402.com/llms.txt
- Full API reference: https://klymax402.com/llms-full.txt
- Live stats: https://klymax402.com/stats
License
MIT
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