How do I install Eigenstyle?

Copy the stdio config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.

Does Eigenstyle need an API key?

No required environment variable is listed on this record.

What transport does Eigenstyle use?

Eigenstyle runs locally over stdio.

When was Eigenstyle last checked?

Last checked 2026-11-12. MCP server for a personal voice profile: corpus, fingerprint, and draft-checking tools.

Eigenstyle MCP server

Power your agent

Add this server

The publisher's own command. Not a PlugMCP endpoint.

Add to Cursor Add to VS Code Run on PlugMCP

Host a copy with our keys and logs.

Local command

cargo eigenstyle

Claude Code has no install link for a local command. Copy the command below and run it in a terminal.

shClaude Code

1claude mcp add ai.qompass-eigenstyle -- cargo eigenstyle

Run in a terminal.

jsonClaude Desktop

1{2  "mcpServers": {3    "ai.qompass-eigenstyle": {4      "command": "cargo",5      "args": [6        "eigenstyle"7      ]8    }9  }10}

claude_desktop_config.json

Local · cargoPublisher installStep-by-step: add this in Claude

Remote URL or a command on your machine? How the two installs differ

Run on PlugMCP

Host a copy with our keys and logs.

A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.

Launch

Server facts

Local

Transport: stdio
Version: 1.0.4
Last checked

Tools

No tool list yet. Remote servers get one after the first health check.

FAQ

Questions

eigenstyle — your voice profile as a tool

A Rust workspace that turns Matt Porter's measured writing fingerprint (built 2026-10-11 in the matt-voice skill) into a living system: an MCP server agents can call, a terminal UI, and a GPUI desktop GUI — all over one core library, all fed by a corpus you keep adding to.

The fingerprint is measured, not vibes: sentence-length distribution, function-word profile, punctuation rates, parentheticals, hyphenated compounds, hedge/assertive balance, first-person rate — the same features, tokenizer, rounding, and leave-one-out band calibration as the skill's Python reference. A parity test suite proves the Rust engine reproduces the Python numbers on the seed corpus (features and bands identical; checker deltas on the held-out pieces match: JAS 1.196, Cureus 1.088, synthetic 1.253).

The three front-ends

Front-end	Binary	Run it
MCP server (stdio)	`eigenstyle`	`cargo run --release -p eigenstyle` (add `--home <dir>` to choose the store)
Terminal UI	`eigenstyle-tui`	`cargo run --release -p eigenstyle-tui`
Desktop GUI	`eigenstyle-gui`	`cargo run --release -p eigenstyle-gui` (Wayland session)

All three share one store: $EIGENSTYLE_HOME, else ~/.local/share/eigenstyle/. First open seeds it from the skill's corpus (6 pieces, 7,674 words), fingerprint, and readable profile.

MCP tools

Tool	What it does
`check_draft`	Score a draft (text or file): verdict CLOSE / DRIFTING / OFF-VOICE / UNRELIABLE, delta, top contributing features, avoid-list hits. With `source_text`/`source_file_path`, also accounts for every number and URL from the source — dropped numbers and dropped/broken URLs are reported.
`get_exemplars`	Verbatim exemplar paragraphs from included samples of one genre (the retrieval bank agents draft against).
`get_profile`	The readable profile + fingerprint summary (effective values, which are user-corrected), bands, avoid list.
`ingest_sample`	Add writing (exactly one of `text` / `file_path` / `url`). Title, genre, and authorship (`sole`/`blended`) are required — attribution is never silently defaulted. Never recomputes the fingerprint.
`list_corpus`	The corpus manifest: metadata, word counts, included flags, totals.
`recompute_fingerprint`	Recompute from included samples and re-derive the bands. `dry_run: true` previews the induced feature deltas and band shifts without saving — review before you apply.

Protocol: newline-delimited JSON-RPC 2.0 over stdio, the estate's research-mcp pattern. Fail-closed throughout: malformed frames, unknown tools, strict argument schemas, named size bounds everywhere.

Adding your writing

MCP: an agent calls ingest_sample (or you ask for a URL fetch — the core fetches it, bounded, HTML reduced to text).
TUI: Add writing screen (key 2) — title, genre, authorship toggle, source, then a file path (Enter loads it) or pasted text; Ctrl+S saves.
GUI: Add writing tab — same fields as clickable boxes; the authorship button toggles sole/blended; Add sample saves.

In every flow the same rules hold: samples are append-only (exclude a sample from the fingerprint instead of deleting history), and the fingerprint never changes silently — recompute is explicit, with a dry-run preview first.

Correcting the fingerprint

The fingerprint dashboard (TUI Fingerprint screen, GUI Fingerprint tab) lists every feature's mean/SD. Select one, type a corrected mean, apply: the value is stored as a user correction overlaid on the computed reference. Corrections survive recompute, are marked wherever they show, and can be cleared wholesale to restore computed values exactly.

Patterns adapted from same-kind tools

HumanifyMe — the editable, human-readable fingerprint, and the deterministic post-draft verify gate (dropped numbers / broken URLs in check_draft).
brandvoice-mcp — ingest → chunk → exemplar retrieval bank (get_exemplars serves corpus paragraphs by genre).
book-writer-mcp / Eden — per-genre style profiles (the dashboard shows pooled per-genre stats), and the builder flow where induced rules are shown for correction before they are saved (recompute dry-run preview → apply).
Arcitext — tone-fit via an explicit avoid list, enforced by the checker and editable in the Profile view.

Bounds (named, enforced)

Sample text ≤ 256 KiB and ≥ 10 tokens; draft ≤ 1 MiB, < 200 words = UNRELIABLE verdict (integrity/avoid checks still run); URL fetch ≤ 1 MiB, 15 s, HTTP(S) only, ≤ 3 redirects; JSON-RPC line ≤ 4 MiB; fingerprint build needs ≥ 2 included pieces (leave-one-out calibration is undefined below that) and fails closed otherwise.

Platform notes

Toolchain pinned to Rust 1.99.0 (rust-toolchain.toml), matching the estate. GPUI is pinned exactly: gpui-ce = =0.2.2 + gpui_ce_platform = =0.1.0 (features wayland, x11).
GUI rendering is verified on Wayland (primo's desktop is Hyprland; the smoke runs under a headless wlroots compositor). Under Xvfb/X11 this GPUI build presents black frames — use a Wayland session.
GUI text entry is click-to-focus, append/backspace only (no selection/IME yet) — a stated limit, tracked in PROGRESS.md.

Layout

crates/eigenstyle-core   corpus store, stylometry, fingerprint build, checker, fetch
crates/eigenstyle    stdio MCP server (6 tools)
crates/eigenstyle-tui    ratatui TUI (eigenstyle-tui --snapshot <screen> renders headlessly)
crates/eigenstyle-gui    GPUI GUI
screenshots/        smoke evidence (GUI corpus + fingerprint views, probe)

License

This project is licensed under the Apache License, Version 2.0.

Add this server

Host a copy with our keys and logs.

Server facts

Tools

Questions

How do I install Eigenstyle?

Does Eigenstyle need an API key?

What transport does Eigenstyle use?

When was Eigenstyle last checked?

Documentation

eigenstyle — your voice profile as a tool

The three front-ends

MCP tools

Adding your writing

Correcting the fingerprint

Patterns adapted from same-kind tools

Bounds (named, enforced)

Platform notes

Layout

License