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Zero Core Verify MCP Server

answering

Zero Core Verify is answering right now. Last checked 11 min ago. 15 installs a week from npm. It exposes 5 tools. Last commit 1 May 2026.

Post-tx outcome verification via LLM-as-judge. Zero Core Verify.

Installs per day peak 6 · avg 2 · +78% w/w
a month agotoday
Uptime history 47 days of history
47 days agonow
100.0%
Uptime 24h
91 of 91 checks
5
Tools
read from the server
398 ms
Response time
average over 24h
15
Installs / week
npm and PyPI

Nothing serious here today

Today is the operative word: we check Zero Core Verify every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

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 11 min ago.

run in your terminal
claude mcp add zero-core-verify --transport http https://verify.rugslayer.com/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "zero-core-verify": {
      "url": "https://verify.rugslayer.com/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.zero-core-verify]
url = "https://verify.rugslayer.com/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "zero-core-verify": {
      "url": "https://verify.rugslayer.com/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "zero-core-verify": {
      "url": "https://verify.rugslayer.com/mcp"
    }
  }
}

Available tools 5

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

health
health
Check Harvey Verify server status, uptime, and payment network configuration.
report
report_outcome
Record a simple pass/fail outcome report for a service call. No LLM analysis - just logs the result to the quality database. Cheaper alternative to verify_outcome when you only need to record success/failure.
service
get_service_quality
Get aggregated quality scores for a service based on all past verifications. Returns average completeness, accuracy, pass rate, format compliance rate, SLA compliance rate, and quality trend.
tools
list_tools
List all available Harvey Verify tools with pricing and input requirements. Use this for discovery.
verify
verify_outcome
Post-transaction verification using LLM-as-judge. Checks if a service delivered what was promised. Returns completeness score, accuracy score, format compliance, SLA adherence, issues list, and overall pass/fail.

Endpoints

URLTransportStateLatencyChecked
https://verify.rugslayer.com/mcp streamable-http answering 400 ms 11 min ago

Alternatives to Zero Core Verify

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31 tools answering

Zero Core Verify — questions

Answers built from our own checks of this server.

What can Zero Core Verify do?
It exposes 5 tools, read directly from the server on our last check. Among them: get_service_quality, health, list_tools, report_outcome, verify_outcome. 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 →
Is Zero Core Verify 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 398 ms. The bar chart above shows every period we have measured.
How do I connect Zero Core Verify?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Zero Core Verify need an API key?
No. Zero Core Verify completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 5 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Zero Core Verify?
It answers our handshake in 398 ms on average, which is faster than 38% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
How many people use Zero Core Verify?
The npm package @meltingpixels/zero-core-verify was installed 15 times in the last week. Week over week that is +78%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Zero Core Verify open source?
We cannot say either way: written in TypeScript, 1 stars on GitHub and 2 open issues, but we could not determine the licence, and without one the code is not open source by default.