ReplyLayer MCP Server

by replylayer Your server? Claim it

answering

ReplyLayer is answering right now. Last checked 14 min ago. 94 installs a week from npm.

Safe email for AI agents: a mailbox with inbound scanning, outbound checks and human review.

Installs per day peak 312 · avg 66 · +112% w/w

a month agotoday

Uptime history 16 days of history · worst day 93%

16 days agonow

100.0%

Uptime 24h

91 of 91 checks

—

Tools

hidden behind auth

404 ms

Response time

average over 24h

Installs / week

npm and PyPI

Nothing serious here today

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

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 14 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add replylayer --transport http https://api.replylayer.ai/v1/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "replylayer": {
      "url": "https://api.replylayer.ai/v1/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.replylayer]
url = "https://api.replylayer.ai/v1/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "replylayer": {
      "url": "https://api.replylayer.ai/v1/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "replylayer": {
      "url": "https://api.replylayer.ai/v1/mcp"
    }
  }
}

This one needs environment variables set before it will start: REPLYLAYER_API_KEY (ReplyLayer API key. Optional if you ran `npx -y replylayer-mcp init`, which stores it locally.). The author declared them in the registry entry; get the values from the project itself.

This endpoint answered with an authorization challenge. The server is running, but you need an API key from its owner to call it.

Endpoints

URL	Transport	State	Latency	Checked
https://api.replylayer.ai/v1/mcp	streamable-http	needs key	394 ms	14 min ago

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ReplyLayer — questions

Answers built from our own checks of this server.

Why is there no tool list for ReplyLayer?

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 ReplyLayer 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 404 ms. The bar chart above shows every period we have measured.

How do I connect ReplyLayer?

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. You will need your own key: it refuses anonymous clients.

Does ReplyLayer need an API key?

Yes. Every time we knock, ReplyLayer 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 ReplyLayer?

It answers our handshake in 404 ms on average, which is faster than 31% 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 ReplyLayer?

The npm package replylayer-mcp was installed 94 times in the last week. Week over week that is +112%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.