JSON Schema Validator is answering right now. Last checked 11 min ago. It exposes 1 tools.
Validates JSON against a JSON Schema, lists violations. x402 payment required (testnet USDC).
Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 5 September 2026. No other catalogue keeps this.
Over the last week it answered 99.8% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 11 min ago.
claude mcp add json-schema-validator --transport http https://faceted-napped-debtless.ngrok-free.dev/json-schema-validator/mcp
{
"mcpServers": {
"json-schema-validator": {
"url": "https://faceted-napped-debtless.ngrok-free.dev/json-schema-validator/mcp"
}
}
}
[mcp_servers.json-schema-validator]
url = "https://faceted-napped-debtless.ngrok-free.dev/json-schema-validator/mcp"
{
"mcpServers": {
"json-schema-validator": {
"url": "https://faceted-napped-debtless.ngrok-free.dev/json-schema-validator/mcp"
}
}
}
{
"mcpServers": {
"json-schema-validator": {
"url": "https://faceted-napped-debtless.ngrok-free.dev/json-schema-validator/mcp"
}
}
}
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
json_schema_validator
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://faceted-napped-debtless.ngrok-free.dev/json-schema-validator/mcp | streamable-http | answering | 569 ms | 11 min ago |
Validates email syntax and MX records. x402 payment required (testnet USDC).
Normalizes and deduplicates a list of URLs. x402 payment required (testnet USDC, Base Sepolia).
Extracts emails from texts. x402 payment required (testnet USDC).
Checks current App Store version by bundle ID. x402 payment required (testnet USDC).
Checks if a URL path is allowed by robots.txt. x402 payment required (testnet USDC).
Converts text titles into URL-safe slugs and flags duplicates. x402 payment required (testnet USDC).
Test webhook endpoints — send requests, measure latency, validate responses. x402 micropayment.
Generates relationally valid test data in a PostgreSQL database from its live schema.
Answers built from our own checks of this server.