When MCP Server

by whenlabs-org Your server? Claim it

local only

When runs on your own machine — the client starts it, so there is no endpoint to ping. 96 installs a week from npm. Last commit 24 Apr 2026.

The WhenLabs developer toolkit — 6 tools, 7 MCP endpoints, one install.

Installs per day peak 40 · avg 12 · +338% w/w

a month agotoday

Installs / week

npm · @whenlabs/when

Stars

0 open issues

24 Apr 2026

Last commit

0 releases in 90 days

MIT

License

TypeScript

What the code does

We read the source, 18 h ago · rules 3dff92dd89df

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Checks whether it runs in a sandbox packages/berth/src/utils/environment.ts:43

  if (await fileExists('/.dockerenv')) {

Builds a file path from a variable packages/aware/src/commands/init.ts:79, packages/aware/src/commands/sync.ts:169, packages/aware/src/diff/content-diff.ts:65 и ещё 4

    const outputPath = path.join(projectRoot, file.path);

Runs an external command packages/berth/src/utils/platform.ts:42, packages/when/src/utils/mcp-config.ts:8, packages/when/src/utils/run-cli.ts:12

    execFile(cmd, args, { timeout, maxBuffer: 10 * 1024 * 1024 }, (error, stdout, stderr) => {

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add when -- npx -y @whenlabs/when

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

{
  "mcpServers": {
    "when": {
      "args": [
        "-y",
        "@whenlabs/when"
      ],
      "command": "npx"
    }
  }
}

~/.codex/config.toml

[mcp_servers.when]
command = "npx"
args = ["-y", "@whenlabs/when"]

.cursor/mcp.json

{
  "mcpServers": {
    "when": {
      "args": [
        "-y",
        "@whenlabs/when"
      ],
      "command": "npx"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "when": {
      "args": [
        "-y",
        "@whenlabs/when"
      ],
      "command": "npx"
    }
  }
}

Alternatives to When

same job, measured the same way

Gadgethumans MCP

by scotia1973-bot

46 MCP tools + 300+ REST endpoints. Free tier, no API key. One-line install.

126 installs/wk local only

Agentmarketplace MCP

by stevemilton

Discover MCP servers + tools, auto-install into any client, pay for x402 endpoints in USDC.

63 installs/wk local only

Specrun

by pavelpiha

MCP server that converts OpenAPI specs into tools which can query API endpoints

local only

Apibase

by whiteknightonhorse

327 tools, 92 providers. Pay per call via x402 + MPP. One MCP endpoint.

103 installs/wk answering

Gateway

by edgethirteen-www

All 36 Edge Thirteen MCP tools (SEC filings, WCAG, entity diligence, more) in one endpoint.

43 tools answering

DATPAQ

by datpaq

34 production API tools over one hosted MCP endpoint.

answering

Solana MCP by Vybe

by vybenetwork

Solana MCP developer toolkit: wallets, trades, markets, PnL, transfers, onchain, swaps & API tools.

7 tools answering

Revternal

by pipeworx-io

Revternal MCP — wraps the Revternal Developer Intelligence API

41 tools answering

When — questions

Answers built from our own checks of this server.

Why is there no uptime for When?

When runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package @whenlabs/when was installed 96 times last week.

How do I connect When?

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 runs locally, so the command pulls @whenlabs/when straight from npm; nothing to host, nothing to sign up for.

How many people use When?

The npm package @whenlabs/when was installed 96 times in the last week. Week over week that is +338%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is When open source?

Yes — it is published under the MIT licence, written in TypeScript and 3 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.