Vega MCP Server

by thetempleofdoom-vega-mcp Your server? Claim it

not responding

Vega is listed as active in the registry but did not answer our last check. It exposes 23 tools.

22 developer utilities: base64, hashes, JWT, JSON tools, unit conversion. Free, keyless.

Uptime history 47 days of history · worst day 0%

47 days agonow

0.0%

Uptime 24h

0 of 92 checks

Tools

read from the server

86 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 1

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 2 October 2026. No other catalogue keeps this.

2 Oct a tool appeared breach_catalog

Vega does not always answer

Over the last week it answered 0.0% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 3 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add vega --transport http https://vega-mcp.thetempleofdoom.com/mcp

Settings → Connectors → Add custom connector, then paste this address

https://vega-mcp.thetempleofdoom.com/mcp

~/.codex/config.toml

[mcp_servers.vega]
url = "https://vega-mcp.thetempleofdoom.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "vega": {
      "url": "https://vega-mcp.thetempleofdoom.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "vega": {
      "type": "http",
      "url": "https://vega-mcp.thetempleofdoom.com/mcp"
    }
  }
}

Available tools 23

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

json

json_diff

Diff two JSON values (added/removed/changed keys).

json_format

Validate + pretty-print JSON.

json_to_csv

Flatten a JSON array of objects to CSV.

url

url_decode

Percent-decode a string.

url_encode

Percent-encode a string.

url_parse

Parse a URL into scheme/host/path/query/fragment.

base64

base64_decode

Base64-decode (returns text + hex).

base64_encode

Base64-encode text.

base

base_convert

Convert a number between bases 2-36.

breach

breach_catalog

Search public breach metadata by breach name or domain (what happened, not who). Keyless HIBP catalog.

case

case_convert

Convert case: camel/snake/kebab/pascal/title/upper/lower.

cron

cron_explain

Explain a 5-field cron expression.

epoch

epoch

Convert a unix epoch to human-readable UTC + relative.

hash

hash

Hash a string. algo = md5/sha1/sha256/sha512.

hex

hex_to_text

Decode hex bytes to text.

html

html_decode

Decode HTML entities.

jwt

jwt_decode

Decode a JWT header+payload (no signature verification).

now

now

Current unix time (UTC).

regex

regex_test

Test a regex; return matches + groups.

slugify

slugify

Slugify text (lowercase, dashes, ascii).

string

string_metrics

Length/word/line/char counts + Shannon entropy.

text

text_to_hex

Encode text to hex.

uuid

uuid

Generate a random UUID v4.

Endpoints

URL	Transport	State	Latency	Checked
https://vega-mcp.thetempleofdoom.com/mcp	streamable-http	answering	86 ms	3 min ago

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Vega — questions

Answers built from our own checks of this server.

What can Vega do?

It exposes 23 tools, read directly from the server on our last check. Among them: base64_decode, base64_encode, base_convert, breach_catalog, case_convert, cron_explain and 17 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

What is Vega mostly used for?

Its tools cluster around url, json and base64. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.

Is Vega working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 92 checks got a reply (0.0%), average response time 86 ms. The bar chart above shows every period we have measured.

The registry lists Vega as active — why does it not respond?

The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.

How do I connect Vega?

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.

Does Vega need an API key?

No. Vega completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 23 of them are readable on this page. This is what we observed, not what the docs claim.