Silvertongue

How it works

1. Pick a voice. Every voice in the catalogue is a researched study of how a famous person writes: how they open, argue, land a line, and what they never say.
2. Bring your point. Your brief, your facts, your numbers, your story. The voice changes the delivery and leaves the substance alone.
3. Switch any time. Same idea, another voice, one swap. Mid-draft or mid-thread.

An example, side by side

The brief: After eight months of building, we launch our app on Friday. It turns voice notes into a to-do list. Free for the first month.

William Shakespeare	Snoop Dogg	Cher	Theo Von
Eight months we laboured; Friday is the day We send our app abroad into the world. Speak but thy notes, and it shall straight array Thy tasks in order, every list unfurled. The first month is our gift; no coin we ask, So speak, and let thy voice set down each task.	8 months in the making 🔨🔥 Our app droppin Friday!! U talk, it turns your voice notes into a to-do list 📝👍🏿 First month free. BlessUp 🙏🏿	8 MONTHS OF BUILDING…& FRIDAY IT'S HERE‼️🚀 Our App Turns UR Voice Notes In2 A To-Do List📝✨ U TALK,IT LISTENS🙏🏻(Unlike Some Ppl I Know🙄) FIRST MONTH FREE💋	we been building this app for 8 months bro. drops friday. u just talk into it and it turns ur voice notes into a to-do list. its like having a little assistant in ur phone except this one dont do cocaine. first month free
MrBeast	Donald Trump	Elon Musk	Ricky Gervais
We spent 8 MONTHS building an app and it launches this Friday!! You literally just talk and it turns your voice notes into a to-do list :D First month is free, go try it and tell me what you think!!	After eight long months of building, our App launches this Friday! You talk, and it turns your Voice Notes into a To-Do List, very fast and very easy. FREE for the first month. You will love it. A BIG day!!!	8 months of work. Launches Friday. Talk to it and it writes your to-do list. First month free	We've spent 8 months building an app. It launches on Friday. You talk into it & it turns your voice notes into a to-do list. So now you can ignore your responsibilities in a much more organised way. First month is free. You're welcome 😂

_{Handwritten editorial illustrations of each profile's technique, never quotations or model output. Every voice's own example is in its profile.json.}

Why it beats "write like…"

Ask a chatbot to "write like" someone famous and you get an impression from memory: stock catchphrases, every format flattened into the same post, and your actual point lost somewhere in the costume. Silvertongue voices are built the other way round.

• Studied from the source. Each voice is drawn from what the person actually published, in the medium it is for, with every source linked.
• Blind-tested before it ships. A voice joins the catalogue when people pick it over a plain "write like name" prompt without knowing which is which.
• Your facts, their delivery. Numbers, names and stories come through untouched. That is why people post the result.
• One file, every surface. The same VOICE.md runs in your agent, your browser and anywhere else a model reads text.

The catalogue

Founders and builders, creators, stars, comedians, essayists, classic writers and politicians, admitted one pull request at a time. Each voice is a folder in profiles/: a VOICE.md that an agent reads, and a profile.json with its scope, limits and sources.

Voice	The move	Studied
Cher	Feel it, post it, and let the emoji finish the sentence.	9 posts, 2016 to 2024
Donald Trump	Make it the biggest thing that ever happened, with Capitals and exclamation marks.	1 speech and 7 posts, 2017 to 2026
Elon Musk	Say it in as few words as the claim allows and let a number do the arguing.	2 essays and 8 posts, 2006 to 2026
MrBeast	Lead with a premise and a big number, then tell people to go watch.	10 posts, 2022 to 2026
Ricky Gervais	Say the plain thing, then turn it in the last sentence.	1 transcript and 7 posts, 2020 to 2026
Snoop Dogg	Name it, say it's out now, tag your people and let the emoji talk.	1 speech and 7 posts, 2018 to 2025
Theo Von	Say what a thing really is in one absurd comparison, then take it somewhere darker.	22 posts, 2015 to 2026
William Shakespeare	Raise the stakes, turn the listener's view around, and land it in a rhymed couplet.	4 plays and 1 poem, 1604 to 1623

Featured voices. All 27 are listed in profiles/.

_{Generated from profiles/ with npm run catalogue and checked in CI.}

What's inside a voice

VOICE.md has seven parts, defined by the VOICE.md v1 format:

Part	What it captures
Stance	How the writer meets the reader and the subject
Construction	How a piece opens, turns and lands
Rhythm	Sentence and paragraph movement
Detail	Which specifics earn their place
Formats	How the voice bends for posts, replies, explanations and threads
Restraint	What the voice leaves out
Facts and identity	Your facts stay yours; nobody pretends to be anybody

Use it everywhere

Where	How
Any agent	Hand it a VOICE.md with your brief	Now
Claude Code and Codex	claude plugin marketplace add auscaster/agent-plugins, then claude plugin install silvertongue@auscaster (or codex plugin add silvertongue@auscaster)	Now
Any MCP client	https://mcp.silvertongue.dev/mcp, with voice switching mid-thread	Now
Your browser	An extension for Chrome, Edge, Firefox and Safari that writes in any compose box	Next

Start now with any voice:

curl -fsSLo VOICE.md https://raw.githubusercontent.com/auscaster/silvertongue/main/profiles/elon-musk/VOICE.md

Rewrite draft.md using VOICE.md. Keep every fact, number and name from my notes.

Add a voice

Know someone's writing cold? Put them in the catalogue.

git clone https://github.com/auscaster/silvertongue && cd silvertongue
npm ci && npm run verify

Add profiles/<slug>/VOICE.md and profile.json, run npm run catalogue && npm run verify, and open a pull request. CONTRIBUTING.md has the rules: study the medium the voice is for, link every source, describe technique only.

Claim your voice

In the catalogue yourself? Open an issue to claim your voice, correct it or have it removed. Creator-verified official voices are on the way.

House rules

• Style, never identity. No invented quotes, opinions or endorsements, and no claiming to be the person. Every voice is an unofficial study until its owner claims it.
• Politics is delivery only. Politician voices never state positions, endorse anyone or write about elections and voting.
• Sources linked, never copied. Profiles point at the originals.
• Drafts, never autoposts. You decide what gets sent.

License

Code is Apache-2.0. Profiles are CC BY 4.0. The Silvertongue name and logo are not licensed; see NOTICE. Security issues go to SECURITY.md.