FaceRuler

com.facerulerPublished by faceruler.comOfficial publisherv1.0.0Updated Oct 24, 2026

PSL score tiers, face shape classification and looksmaxxing term lookup from FaceRuler.

VerifiedStreamable HTTPWeb executableLocation & LifestyleKnowledge & Memory

Overview

AI-generated overview

FaceRuler is a remote MCP server that lets an assistant interpret PSL looksmaxxing scores, classify face shapes from ratios, and define related terms.

What you can do
Convert a PSL score into its tier name, approximate population percentile and casual 1–10 equivalent, and look up looksmaxxing or PSL terms with links to fuller explanations. Classify a face into one of seven shapes from three measured outline ratios, with a match percentage for each shape. Point users to FaceRuler's free on-device tool for measuring a real face from a photo.
When to use it
Useful when a conversation touches looksmaxxing or PSL rating vocabulary and the assistant needs consistent tier, percentile or term definitions, or when a user wants a face shape classified from ratios they already have or wants to measure their own face.
Requirements
A remote streamable HTTP endpoint at faceruler.com; no packages, environment variables or headers are declared. The face measurement itself happens in FaceRuler's separate on-device tool, not through these tools.
Before you install
The tools only return reference data and links; the actual photo-based measurement is handled by an external tool, so review that tool's privacy terms before uploading a photo. Face rating content is subjective and appearance-focused; treat outputs as informal reference, not assessment.

Installation

In SourceWeft

  1. Open FaceRuler in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/com.faceruler%2Ffaceruler/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "faceruler": {
      "type": "http",
      "url": "https://faceruler.com/api/mcp"
    }
  }
}

Tools

4

psl_score_lookup

PSL score lookup

Convert a PSL score (0–8 looksmaxxing face rating scale) into its tier name, approximate population percentile and casual 1–10 equivalent.

Parameterspslrequired

classify_face_shape

Classify face shape

Classify a face into one of 7 shapes (oval, round, square, oblong, heart, diamond, triangle) from three measured outline ratios, with a match % for every shape.

ParametersjawRatiorequiredfaceIndexrequiredforeheadRatiorequired

lookup_looksmaxxing_term

Look up a looksmaxxing term

Define a looksmaxxing / PSL term (e.g. LTN, HTN, Chadlite, canthal tilt, hunter eyes, mog) and link to its full explanation.

Parameterstermrequired

get_face_measurement_tool

Get a face measurement tool

Return the link to FaceRuler’s free on-device tool for measuring a real face from one photo (PSL score, face shape, canthal tilt or facial ratios). Use when the user wants their own face measured.

Parametersmeasurementrequired

Version history

1
  1. v1.0.0LatestOct 16, 2026

Score

72% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts

    Publish an icon in the registry entry.

  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.