Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
MCP server for LayerOne DocX (documents & Factur-X) and Sign (e-signature) APIs.
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.
Pick the AI app you use, then copy the settings.
DOCX_API_KEY, SIGN_API_KEYValues marked secret are keys to your account. Never share them or paste them into a chat.
You need
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json
{
"mcpServers": {
"layerone": {
"command": "npx",
"args": [
"-y",
"layerone-mcp"
],
"env": {
"DOCX_API_KEY": "your-value",
"SIGN_API_KEY": "your-value"
}
}
}
}Run this in your terminal
claude mcp add layerone --env DOCX_API_KEY=your-value --env SIGN_API_KEY=your-value -- npx -y layerone-mcpFill in the empty values before running it.
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"layerone": {
"command": "npx",
"args": [
"-y",
"layerone-mcp"
],
"env": {
"DOCX_API_KEY": "your-value",
"SIGN_API_KEY": "your-value"
}
}
}
}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": {
"layerone": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"layerone-mcp"
],
"env": {
"DOCX_API_KEY": "your-value",
"SIGN_API_KEY": "your-value"
}
}
}
}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.
This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.
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.
Runs on your computer; the tool list appears in your AI app after you install it.
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 with the GitHub account GOLayerone, which owns the repo
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
This one runs on your computer; there is no internet endpoint
Runs on your computer and uses local settings instead
Runs on your computer; we can only read tool lists from internet endpoints
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 1 of 1 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.
You need to fill in: DOCX_API_KEY, SIGN_API_KEY
It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).
The GitHub repo last changed –, and the latest version (1.0.0) reached the registry 5 months ago.
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.
In the same category: Spec Driven Development, Remote Desktop Commander, dotnet-mcp
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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Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.
Serveur MCP (Model Context Protocol) qui expose les API DocX et Sign de LayerOne directement aux agents IA (Claude Desktop, ChatGPT, Cursor, Windsurf, etc.).
Une fois branché, votre assistant IA peut, en langage naturel :
Le serveur se lance via npx — aucune installation manuelle requise. Ajoutez le bloc ci-dessous à la configuration MCP de votre client, en renseignant vos deux clés API.
Fichier claude_desktop_config.json :
{
"mcpServers": { "layerone": { "command": "npx", "args": ["-y", "layerone-mcp"], "env": { "DOCX_API_KEY": "votre_cle_docx", "SIGN_API_KEY": "votre_cle_sign" } } } }
Fichier ~/.cursor/mcp.json (ou réglages MCP du projet) — même format :
{
"mcpServers": { "layerone": { "command": "npx", "args": ["-y", "layerone-mcp"], "env": { "DOCX_API_KEY": "votre_cle_docx", "SIGN_API_KEY": "votre_cle_sign" } } } }
La plupart des clients MCP acceptent la même structure (command = npx, args = ["-y", "layerone-mcp"], env = vos deux clés). Reportez-vous à la documentation MCP de votre client pour l'emplacement exact du fichier de configuration.
Créez un compte gratuit sur https://dev.layerone.fr, puis générez vos clés dans l'onglet « Clés API » :
DOCX_API_KEY ;SIGN_API_KEY.Le compte gratuit offre 20 documents DocX et 10 signatures Sign par mois.
Les clés ne sont jamais écrites en dur dans le code : elles sont lues uniquement
depuis les variables d'environnement passées par votre client MCP.
https://docx.layerone.fr)| Outil | Description | Endpoint |
|---|---|---|
docx_render_facturx | Générer une facture Factur-X (PDF/A-3) | POST /render-facturx |
docx_render_document | Générer un document PDF ou DOCX | POST /render-document |
docx_list_templates | Lister / filtrer les modèles | GET /client/templates |
docx_upload_template | Déposer un modèle Word | POST /client/templates |
docx_update_template | Mettre à jour un modèle (archive l'ancien) | PUT /client/templates/{id} |
docx_download_template | Télécharger un modèle | GET /client/templates/{id} |
docx_delete_template | Supprimer un modèle | DELETE /client/templates/{id} |
docx_list_template_versions | Lister les versions archivées | GET /client/templates/{id}/versions |
docx_download_template_version | Télécharger une version archivée | GET /client/templates/{id}/versions/{version_id} |
docx_restore_template_version | Restaurer une version archivée | POST /client/templates/{id}/restore/{version_id} |
docx_get_usage_stats | Consulter le quota et l'usage | GET /usage-stats |
https://sign.layerone.fr)| Outil | Description | Endpoint |
|---|---|---|
sign_send_for_signature | Envoyer un PDF à signer | POST /v1/documents/send |
sign_detect_fields | Détecter les champs de signature ([[...]]) | POST /v1/documents/detect-fields |
sign_get_document_status | Consulter le statut d'une signature | GET /v1/documents/{id} |
sign_download_signed_document | Télécharger le PDF signé | GET /v1/documents/{id}/download |
sign_send_otp | Envoyer un code OTP par SMS | POST /v1/otp/request |
sign_verify_otp | Vérifier le code OTP | POST /v1/otp/verify |
sign_validate_signature | Vérifier l'intégrité de la signature | GET /v1/documents/{id}/validate |
sign_get_audit_certificate | Récupérer le certificat de preuve | GET /v1/documents/{id}/audit |
sign_cancel_document | Annuler une demande de signature | DELETE /v1/documents/{id} |
Fichiers : les modèles et PDF sont fournis aux outils encodés en base64
(
template_base64,pdf_base64). Pour les téléchargements, le serveur renvoie un
résumé (taille + aperçu base64 tronqué) plutôt que le binaire complet, afin de ne
pas saturer la conversation.
cd integrations/mcp
npm install npm run build # compile src/ → dist/ DOCX_API_KEY=... SIGN_API_KEY=... node dist/index.js
Le serveur communique sur stdio (entrée/sortie standard) selon le protocole MCP.
.github/workflows/publish.yml (déclenché par une release GitHub).server.json (champ name io.github.GOLayerone/layerone, identique au mcpName de package.json) permet la publication au registre officiel via l'outil mcp-publisher.MIT — © LayerOne.