Prose Coach MCP ServerVerifiedFeatured

AI gets a draft moving. It also reaches for the same moves across every draft.

Prose Coach is a deterministic writing filter that marks 43 of those moves. A fixed rule set runs over your text and flags what's there. Some findings are vocabulary. Most are structural: a triplet where two items would do, or a closer that just restates the paragraph above it. Density gets scored against an accumulation threshold, because one marker is noise and six is a habit.

Every finding quotes the sentence that triggered it and attaches the fix. Two runs on the same text return the same findings, because no language model reads what you wrote.

What it doesn't do

It doesn't score your draft for AI, and it doesn't hand back a laundered version you have to trust. Detection scores are probabilistic and can't be checked against anything. The revision happens in your own client. A finding quotes your sentence and names the rule behind it, then your model makes that edit while you watch it happen.

Tools

Tool	Tier	What it returns
scan_draft	Free	Every finding with the line quoted and the fix attached
coach_draft	PRO	The scan, plus the written rule behind each finding, the scope map for your content type, and the judgment layers
verify_revision	PRO	A before-and-after diff: patterns resolved, reduced, still present, or newly introduced

Two prompts ship alongside them, scan and polish.

Tiers

FREE runs all 43 patterns at three drafts a day, 12,000 characters per request. Re-scanning a draft after edits doesn't count against the limit.

PRO is $5 a month or $50 a year. The daily limit comes off, requests go to 200,000 characters, and coach_draft tells your model which revision passes to run and what to leave alone.

Connect

One URL, about two minutes:

https://www.prose.coach/mcp

Per-client setup lives at prose.coach/connect. A browser scanner at prose.coach runs the same engine if you want to try it before connecting anything.