# io.github.musatoktas/whyts (npm · whyts-mcp)

Find out why a TypeScript project is slow: measured analysis and before/after comparison.

- Trust score: 89/100 (high trust)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- npm · `whyts-mcp`: 89/100 (this document), [markdown](https://verifymcp.io/servers/musatoktas-whyts/whyts-mcp.md), [page](https://verifymcp.io/servers/musatoktas-whyts/whyts-mcp)

## Channel facts

- Registry: `npm`
- Package: `whyts-mcp`
- Version: `0.8.10`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - 0 of 5 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 97/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to musatoktas/whyts).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 13 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 61/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 871 tokens (~290/item across 3 items; 3 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 73/100
  - Stability observed for 22 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 4 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the io.github.musatoktas/whyts MCP server?

io.github.musatoktas/whyts runs locally as an npm package, launched with npx -y whyts-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add musatoktas-whyts -- npx -y whyts-mcp
```

### Cursor

```json
{
  "mcpServers": {
    "musatoktas-whyts": {
      "command": "npx",
      "args": [
        "-y",
        "whyts-mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "musatoktas-whyts": {
      "command": "npx",
      "args": [
        "-y",
        "whyts-mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add musatoktas-whyts -- npx -y whyts-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "musatoktas-whyts": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "whyts-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add musatoktas-whyts --command npx --arg -y --arg whyts-mcp
```

### Hermes

```yaml
mcp_servers:
  musatoktas-whyts:
    command: "npx"
    args: ["-y", "whyts-mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "musatoktas-whyts": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "whyts-mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add musatoktas-whyts -t stdio -c npx -a -y whyts-mcp
```

### Other

```json
{
  "mcpServers": {
    "musatoktas-whyts": {
      "command": "npx",
      "args": [
        "-y",
        "whyts-mcp"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-05 (score 89, +1)

No change was recorded against any check on this day. Stability & Change Management went from 70 to 73. That category is still filling its 30-day observation window: 21 days of observed history at the previous scan, 22 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-03 (score 88, +1)

No change was recorded against any check on this day. Stability & Change Management went from 63 to 67. That category is still filling its 30-day observation window: 19 days of observed history at the previous scan, 20 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-01 (score 87, +1)

No change was recorded against any check on this day. Stability & Change Management went from 57 to 60. That category is still filling its 30-day observation window: 17 days of observed history at the previous scan, 18 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-30 (score 86, +1)

No change was recorded against any check on this day. Stability & Change Management went from 50 to 53. That category is still filling its 30-day observation window: 15 days of observed history at the previous scan, 16 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-28 (score 85, +1)

No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-25 (score 84, +1)

No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-24 (score 83, +15)

- [security improvement] Malware scan: unverified → pass

### 2026-10-23 (score 68, −14)

- [security regression] Malware scan: pass → unverified
- [functional] Package version: 0.8.9 → 0.8.10

## MCP tools (3)

### `analyze` (~253 tokens)

Find out why a TypeScript project is slow. Runs one traced type check of the project (plus `runs` untraced timing runs) and returns compact JSON: Check time, file count, compiler error summary (not the full list of errors), `diagnoses` (a known slow-type pattern with location, evidence and a fix), the top 5 measured findings, and warnings. It takes as long as a full type check of the project (seconds to minutes), plus the extra timing runs.

Input parameters:

- `maxOldSpaceMb` (integer): Heap limit in MB for the compiler process. Ignored with TypeScript 7.
- `project` (string, required): Absolute path to a directory with a tsconfig.json, or to a tsconfig file.
- `runs` (integer): Untraced timing runs for a stable Check time (default 1). Each run is one more full type check. Use 3 or more for a median.
- `timeoutSeconds` (number): Compiler timeout in seconds for each type check. Default 900.
- `typescript` (string): Path to a typescript package directory to use instead of the one in the project (5.x, 6.x or 7.x).

### `compare` (~309 tokens)

Prove whether a change made type checking faster or slower. Runs the full type check `runs` times for the baseline and for the candidate project (a copy or a git worktree of the same project, before and after the change), alternating the order, and returns a decision: `separated` (the ranges do not overlap, a real change, with direction), `within-noise` (no change can be claimed) or `not-comparable` (a side has compiler errors or the compilers differ). It takes about (2 x runs + 2) type checks, so it is slow: `runs` 3 gives a quick answer and 5 or more a firm one.

Input parameters:

- `baseline` (string, required): Absolute path to the project before the change (directory with tsconfig.json, or a tsconfig file).
- `candidate` (string, required): Absolute path to the project after the change. It must be a separate directory, for example a git worktree.
- `maxOldSpaceMb` (integer): Heap limit in MB for the compiler process. Ignored with TypeScript 7.
- `runs` (integer): Measured runs per side (default 5, minimum 3 for a verdict).
- `timeoutSeconds` (number): Compiler timeout in seconds for each type check. Default 900.
- `typescript` (string): Path to a typescript package directory to use instead of the one in the project (5.x, 6.x or 7.x).

### `explain` (~128 tokens)

Show why one file is in the TypeScript program: the shortest import chain from a configured root and the direct importers. It reads the import graph only and does not run the type checker, so it finishes in seconds.

Input parameters:

- `file` (string, required): File to explain, relative to the tsconfig directory.
- `project` (string, required): Absolute path to a directory with a tsconfig.json, or to a tsconfig file.
- `typescript` (string): Path to a typescript package directory to use instead of the one in the project (5.x, 6.x or 7.x).

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/musatoktas-whyts/whyts-mcp#diagnostics

## Score history

- 2026-11-05: 89
- 2026-11-04: 88
- 2026-11-03: 88
- 2026-11-02: 87
- 2026-11-01: 87
- 2026-10-31: 86
- 2026-10-30: 86
- 2026-10-29: 85
- 2026-10-28: 85
- 2026-10-27: 84
- 2026-10-26: 84
- 2026-10-25: 84
- 2026-10-24: 83
- 2026-10-23: 68
- 2026-10-22: 82
- 2026-10-21: 82
- 2026-10-20: 66
- 2026-10-19: 81
- 2026-10-18: 78
- 2026-10-17: 78
- 2026-10-16: 78
- 2026-10-15: 78
- 2026-10-14: 78
- 2026-10-13: 49
- 2026-10-12: 49

## Common questions

### What is the io.github.musatoktas/whyts MCP server?

io.github.musatoktas/whyts is an MCP server listed in the public MCP registry as io.github.musatoktas/whyts. Find out why a TypeScript project is slow: measured analysis and before/after comparison. This page covers its npm package (whyts-mcp).

### Is the io.github.musatoktas/whyts MCP server safe to use?

io.github.musatoktas/whyts scores 89 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. It declares no install or post-install scripts. Its build provenance is signed and verified. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the io.github.musatoktas/whyts MCP server expose?

io.github.musatoktas/whyts exposes 3 tools: analyze, compare, explain. Their descriptions and schemas cost roughly 690 tokens of context every time the server is loaded.

### Is the io.github.musatoktas/whyts MCP server still maintained?

io.github.musatoktas/whyts is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the io.github.musatoktas/whyts MCP server under?

io.github.musatoktas/whyts declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- npm package: https://www.npmjs.com/package/whyts-mcp
- Socket report: https://socket.dev/npm/package/whyts-mcp
- Repository: https://github.com/musatoktas/whyts
- Changelog RSS feed: https://verifymcp.io/servers/musatoktas-whyts/whyts-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/musatoktas-whyts/whyts-mcp.json
- HTML version of this page: https://verifymcp.io/servers/musatoktas-whyts/whyts-mcp