clideveloper-toolsenv-validationdocumentationlicense-audit
A CLI toolkit providing six developer tools via one MCP server for stack detection, port checks, env validation, docs drift, license audit, and task…
Quick Install
Automated & IDE SetupCopy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.
We couldn’t automatically confirm this listing starts correctly
We ran the install command below but it didn't respond within our test window — this can mean a slow first-time install rather than a real problem.
npx -y @whenlabs/whenNo response to initialize.
This is an experimental automated check and can have false negatives — missing environment variables, a slow cold install, etc. It doesn’t necessarily mean something’s wrong. Last checked 1mo ago.
Manual Client & Custom JSON ConfigExpand JSON ▾
Client Config & Setup
Choose your client or environment
Target File:
💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.
Overview
Use cases
Detect project stack and generate AI context files
Check for port conflicts before starting development servers
Validate environment variable files against schemas
Identify documentation drift between code and docs
Audit dependency licenses against policy
Key features
Single MCP server exposing eight endpoints for six tools
Auto-detect stack and regenerate context files
Port conflict scanning
Schema validation for .env files
Documentation drift detection
Dependency license scanning and policy validation
Capabilities & Tool Schemas
Inspect callable tools, capabilities, and parameters exposed to AI agents by When.
Extracted Tool Capabilities
Single MCP server exposing eight endpoints for six tools
Auto-detect stack and regenerate context files
Port conflict scanning
Schema validation for .env files
Documentation drift detection
Dependency license scanning and policy validation
Documentation Overview
@whenlabs/when
Six tools. One install.
A single installable toolkit that brings six WhenLabs developer tools into your Claude Code workflow. After install, the tools are exposed over a single MCP server and Claude calls them automatically when relevant.
Install
One-time setup. The installer:
- Registers a single MCP server (
whenlabs) in your Claude Code configuration - Injects a CLAUDE.md block so Claude knows when to use each tool
- Cleans up any legacy
velocity-mcpregistration (velocity is now bundled)
The six tools
| Tool | Purpose |
|---|---|
| aware | Auto-detect stack and generate AI context files (CLAUDE.md, .cursorrules, …) |
| berth | Detect port conflicts before starting dev servers |
| envalid | Validate .env files against a schema |
| stale | Detect documentation drift between docs and code |
| vow | Scan dependency licenses and validate against policy |
| velocity | Time coding tasks and learn from historical data |
MCP tools
Eight endpoints across the six tools:
| Endpoint | What it does |
|---|---|
aware_sync | Detect stack and regenerate AI context files |
berth_check | Scan project for port conflicts |
envalid_validate | Validate .env files against schema |
stale_scan | Detect documentation drift |
vow_scan | Scan licenses and validate against policy |
velocity_start_task | Start timing a coding task |
velocity_end_task | End timing and record results |
whenlabs_summary | Unified rollup across all five scanners in one call |
All eight are served by the single whenlabs MCP server (stdio, Node 20+). Fix/init/auxiliary commands remain available via each tool's CLI (npx @whenlabs/<tool> --help).
CLI
For per-tool operations, use the tool directly:
Manual MCP configuration
If you're not using the install command, add this to your Claude Code MCP config:
License
MIT — see LICENSE
Related MCP Servers
Adoption & maintenance
Factual signals from GitHub, npm, and our automated checks — not a rating.
GitHub stars
3
Stargazers on the source repository.
npm downloads
369
Package downloads in the last 30 days.
Last commit
4d ago
Most recent push to the default branch.
Install check
Inconclusive
Didn't respond in our test window — often a slow first install.
Directory activity
2 views
Config copies, upvotes, and views on AllMCPs.
Reviews
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Frequently Asked Questions about When
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CategoryCommand Line
PricingFree
56Quality signal: Good · 56/100How this signal is calculated ▾
Server availabilityNot measured
Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.
Verified ownership10/20
Documentation & tools24/30
Adoption & activity8/15
Community engagement0/10
A guidance signal from public completeness & health data — not a user rating. New listings start lower and rise as they add docs, get verified, and grow adoption. Signals we can't observe for a listing are skipped, not counted against it.
Supply-chain signal
No high-severity advisories surfaced by our automated scan.
Critical 0High 0Medium 0Low 0
Scanned 22d ago via OSV.dev · @whenlabs/when (npm)
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