Path set classify

path-set-classify · version 1.0.0 · File paths (lexical) · free, no key needed

Classify an array of file paths by file extension, depth histogram, and path format.

Use when you need to: classify paths · path set classify · file extension breakdown.

Supported

• classify paths
• path set classify
• file extension breakdown
• path depth histogram

Not supported

• stat file
• filesystem access
• detect file type by content

Behavior

• by_extension: map from lowercased extension (including dot) to count, empty string for no extension. by_depth: map from depth integer (0=root-level file) to count. by_format: count of paths detected as posix vs windows. no_extension: paths with no file extension.

Input

• paths (array of string, required): min items 0; max items 10000
• format (one of "posix", "windows", "auto", optional)

Output

• total (integer, optional)
• by_extension (object, optional)
• by_depth (object, optional)
• by_format (object, optional)
• no_extension (integer, optional)
• format (string, optional)

Limits

• max paths: 10000
• max path bytes: 4096

Example

Request input:

{
  "paths": [
    "src/a.ts",
    "src/b.ts",
    "test/c.spec.ts",
    "README.md",
    "Makefile"
  ]
}

Response:

{
  "result": {
    "total": 5,
    "by_extension": {
      ".ts": 3,
      ".md": 1,
      "": 1
    },
    "by_depth": {
      "0": 2,
      "1": 3
    },
    "by_format": {
      "posix": 5,
      "windows": 0
    },
    "no_extension": 1,
    "format": "auto"
  }
}

How to call it

MCP

Connect https://computefirst.net/mcp (setup), then call execute with:

{
  "id": "path-set-classify",
  "version": "1.0.0",
  "input": {
    "paths": [
      "src/a.ts",
      "src/b.ts",
      "test/c.spec.ts",
      "README.md",
      "Makefile"
    ]
  }
}

HTTP (no key)

curl -X POST https://computefirst.net/v1/tools/path-set-classify/versions/1.0.0/execute \
  -H "Content-Type: application/json" \
  -d '{"paths":["src/a.ts","src/b.ts","test/c.spec.ts","README.md","Makefile"]}'

The machine-readable contract is at /v1/tools/path-set-classify/versions/1.0.0.

CLI

node cli.mjs run path-set-classify 1.0.0 --input input.json --base-url https://computefirst.net

Get the client at /clients/cli/.

Related tools

• Path lexical parse: Decompose a file path into its lexical components without accessing the filesystem.
• Path set dedupe: Deduplicate an array of paths based on lexical equivalence while preserving first or last seen order.
• Path set difference: Compute the set difference (A \ B) of two path collections using lexical path equivalence.
• Path set glob filter: Filter an array of paths against glob patterns with inclusion and exclusion rules lexically without filesystem access.
• Path set hierarchy tree: Transform a flat array of file paths into a nested deterministic directory tree structure.
• Path set ignore filter: Filter paths against gitignore-style rule lines (negation, comments, directory trailing slashes) lexically.