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ELYREON JSON Schema Payload Validator MCP Server

answering

ELYREON JSON Schema Payload Validator is answering right now. Last checked 5 min ago. Last commit 25 Oct 2026.

JSON Schema validator for API payloads via MCP: bounded checks and structured pass/fail errors.

Uptime history 9 days of history · worst day 99%
9 days agonow
100.0%
Uptime 24h
91 of 91 checks
—
Tools
hidden behind auth
91 ms
Response time
average over 24h
0
Stars
last commit 25 Oct 2026

ELYREON JSON Schema Payload Validator missed one check this week

Everything else answered, so this is steady rather than shaky. We check every 15 minutes, which is how a one-off gets told apart from the start of a pattern, and how you hear about the next one within the hour instead of from your users.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 5 min ago.

run in your terminal
claude mcp add payload-validator --transport http https://elyreon-payload-validator.colt2822.workers.dev/mcp
Settings → Connectors → Add custom connector, then paste this address
https://elyreon-payload-validator.colt2822.workers.dev/mcp
~/.codex/config.toml
[mcp_servers.payload-validator]
url = "https://elyreon-payload-validator.colt2822.workers.dev/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "payload-validator": {
      "url": "https://elyreon-payload-validator.colt2822.workers.dev/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "payload-validator": {
      "type": "http",
      "url": "https://elyreon-payload-validator.colt2822.workers.dev/mcp"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, but it did not say what kind of credentials it expects.

Endpoints

URLTransportStateLatencyChecked
https://elyreon-payload-validator.colt2822.workers.dev/mcp streamable-http needs auth 62 ms 5 min ago

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ELYREON JSON Schema Payload Validator — questions

Answers built from our own checks of this server.

Why is there no tool list for ELYREON JSON Schema Payload Validator?
The server answered our handshake with an authorization challenge, so it is running — but it will not describe its tools to an anonymous client. To see them you need to connect with your own credentials. We record it as alive, not as broken: 100.0% of checks in the last 24 hours got a reply.
Is ELYREON JSON Schema Payload Validator working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 91 ms. The bar chart above shows every period we have measured.
How do I connect ELYREON JSON Schema Payload Validator?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address. You will need your own credentials: it refuses anonymous clients.
Does ELYREON JSON Schema Payload Validator need an API key?
Yes. Every time we knock, ELYREON JSON Schema Payload Validator answers with an authorization challenge instead of its tool list — that is how we know it is running and gated rather than broken. Bring your own credentials and it will talk.
How fast is ELYREON JSON Schema Payload Validator?
It answers our handshake in 91 ms on average, which is faster than 93% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is ELYREON JSON Schema Payload Validator open source?
The code is open source: it is published under the MIT licence, written in Python and 0 stars on GitHub. The licence covers the code in the repository, not the hosted service at elyreon-payload-validator.colt2822.workers.dev, which runs on its operator's own terms.