Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Famous writing voices for your agent. Find one, read how it was studied, write in it.
These three are never merged into one score: opinions, measurements and popularity are different things.
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
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Works in Claude on the web, desktop and mobile:
https://mcp.silvertongue.dev/mcpRun this in your terminal
claude mcp add --transport http silvertongue https://mcp.silvertongue.dev/mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"silvertongue": {
"url": "https://mcp.silvertongue.dev/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Paste into .vscode/mcp.json in your project
{
"servers": {
"silvertongue": {
"type": "http",
"url": "https://mcp.silvertongue.dev/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
ChatGPT connects only to servers on the internet:
https://mcp.silvertongue.dev/mcpMenu names can differ slightly by plan and over time.
Your choice stays on this device in a cookie; no account needed.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.
search_voicesSearch Silvertongue's famous writing voices by name, by lane (tech, celebrity, comedy, characters, classics, politicians), or by what the writing should do: a roast, a launch post, a plain explanation, a speech. Each result gives the voice ID, its lane, what the voice does, what
get_voiceGet one voice's full profile: its VOICE.md, every source studied with a note on what it shows, the observations drawn from them, an iconic example, the licence and the attribution line. Profiles are unofficial studies of public writing technique; the people named did not write or
get_voice_packetGet the instructions for writing in one voice with your own model, for one format, length, platform, intensity, edge, emoji and spelling setting. The packet carries the full VOICE.md, an exact length target fitted to the platform's limit, and the rules that keep the user's own fa
get_changesCompare the voice IDs your agent has cached with the current release: voices added, voices re-studied as a new edition, and voices removed. Pass an empty list to receive every voice as added.
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026
The registry name was verified against the domain silvertongue.dev (the registry checks domain ownership)
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
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Read 4 tool descriptions and found no hidden instructions to the AI
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
The registry does not list a required key, though some servers ask you to sign in on first use.
It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
The GitHub repo last changed –, and the latest version (0.1.5) reached the registry yesterday.
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.
In the same category: Spec Driven Development, Remote Desktop Commander, HotCodePush
Servers in the same category from other makers, sorted by stars.
Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
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Write like anyone famous.
An open catalogue of famous writing voices for your agent and your browser.
Pick a voice. Switch any time. Keep your point.
How it works · Example · Why it wins · The catalogue · Use it everywhere · Add a voice · Remove or correct a voice
The message: To my mate Dave: I can't make your wedding on Saturday. I double-booked, and honestly the open bar was the only reason I was coming. Congratulations though. I owe you a blender.
William Shakespeare Snoop Dogg Cher Theo Von
Good Dave, I cannot stand beside thee Saturday; I have promised that same day elsewhere, a sin of mine own diary. And shall I lie? It was the open bar that drew me, not the vows: thy wine I loved, and thee a little less. Yet joy to thee, and hear this debt I send: One blender do I owe thee, faithful friend; May it outlast the marriage, to the end.
Dave nephew, I can't make it Saturday. Double booked myself n that's on me. Real talk tho, tha open bar was tha only reason I was pullin up. Big congrats 2 y'all 🎉👏🏿 I owe you a blender. Y'all gonna need it.
DAVE.Babe I Can't Make The Wedding Saturday.I Double Booked Myself😩 & I'm Not Gonna Lie 2 U,The Open Bar Was The Only Reason I Was Coming.Congrats 2 U Both,I'm Crying Already😭 I Owe U A Blender💋🎉
cant make ur wedding saturday dave. i double booked bro. a wedding is really just a open bar with a sad speech in front of it, and honestly the bar was the only reason i was comin. we had a guy back home married his landlord and they never had a bad month. congrats brother. i owe u a blender
MrBeast Donald Trump Elon Musk Ricky Gervais
Dave I can't make your wedding Saturday because I double booked, literally my fault. The open bar was the only reason I was coming lol. So here's the deal: I owe you a blender, and every year you two stay married the blender gets bigger. Year 50 it's the size of a car. Congrats bro 🥰
Dave, I can't make your Wedding on Saturday. Double-booked, very much in demand, nobody has ever been this booked, maybe ever. And frankly the Open Bar was the only reason I was coming. Tremendous bar, everybody says so. Congratulations anyway! You made a beautiful deal. I owe you a Blender. It will be the best Blender!
Can't make the wedding Saturday. Double-booked. Primary attraction was the open bar, so expected loss to you is roughly one drunk guest. Congrats. Blender inbound
Can't make your wedding Saturday, mate. Double-booked. I'd love to say I'm gutted, but to be fair the only reason I was coming was the open bar. Congratulations though. Genuinely. Half of these end in divorce & the other half end in death, so enjoy it. I owe you a blender.
Written in each profile's technique, never their words. Every voice's own example is in its profile.json .
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.
VOICE.md runs in your agent, your browser and anywhere else a model reads text.Founders and builders, creators, stars, comedians, famous characters, 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. | 12 posts and 2 transcripts, 1996 to 2026 |
| Donald Trump | Make it the biggest thing that ever happened, with Capitals and exclamation marks. | 1 speech, 8 posts and 1 essay, 1987 to 2026 |
| Elon Musk | Say it in as few words as the claim allows and let a number do the arguing. | 2 essays, 8 posts and 2 transcripts, 2006 to 2026 |
| MrBeast | Lead with a premise and a big number, then tell people to go watch. | 10 posts and 4 transcripts, 2021 to 2026 |
| Ricky Gervais | Say the plain thing, then turn it in the last sentence. | 5 transcripts and 7 posts, 2016 to 2026 |
| Snoop Dogg | Call what's really going on like it's a game on TV, then rule on it. | 1 speech, 7 posts and 10 transcripts, 2016 to 2025 |
| Theo Von | Say what a thing really is in one absurd comparison, then take it somewhere darker. | 24 posts and 1 transcript, 2015 to 2026 |
| William Shakespeare | Raise the stakes, turn the listener's view around, and land it in a rhymed couplet. | 5 plays and 1 poem, 1604 to 1623 |
Featured voices. All 50 are listed in profiles/.
Generated from profiles/ with npm run catalogue and checked in CI.
What's inside a voice
VOICE.md has nine parts, defined by the VOICE.md v3 format:
| Part | What it captures |
|---|---|
| Lens | What they notice and make of things: what a draft finds to say |
| Moves | Their signature moves, each with what sets it off, how often, and a real line of theirs that shows it |
| Texture | How they speak: grammar, rhythm, register, the words they reach for, punctuation and emoji |
| Plain | What most of their writing looks like |
| Occasions | How they handle a post, a reply, a request, a complaint and good news |
| Never | What they never do, and the impression people imitate |
| Signatures | Their catchphrases, each with the situation it belongs to |
| Facts and identity | Your facts stay yours; nobody pretends to be anybody |
| Examples | About twenty ordinary points and how they would handle each, for range |
| 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 |
| Gemini CLI | gemini extensions install https://github.com/auscaster/silvertongue | 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.
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/ /VOICE.md and profile.json, run npm run catalogue && npm run verify, and open a pull request. Writing a voice is how to make one good and the bar it has to pass; CONTRIBUTING.md has the rest.
If a profile studies you, or a character whose rights you hold, and you want it out, ask privately: it comes out of the catalogue and the service within seven days, and no reason is needed. To fix something in a profile, open an issue or a pull request.
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.
Made by auscaster