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Start a free trial on cloud.anythingmcp.com, add the Sellsy in one click, then point your AI client (Claude, ChatGPT, Copilot or Cursor) at the generated MCP endpoint. No Docker, no git clone, zero engineering experience required.
Summary
Sellsy — French CRM and invoicing: companies, contacts, opportunities, invoices, estimates, items and payments. REST API v2, OAuth 2.0 client credentials.
Try asking
Example prompts for Sellsy
Click any prompt to copy it. Paste into Claude, ChatGPT, Cursor, Gemini, Copilot or OpenClaw to run it against this connector.
Claude is AI and can make mistakes. Please double-check responses.
💡 No install? Use cloud.anythingmcp.com directly. Sign in, click Connectors → Sellsy, paste your credentials, mint an MCP API key — done. No Docker, no
git clone, no local server.
Sellsy + Meta Muse
Sellsy — French CRM and invoicing: companies, contacts, opportunities, invoices, estimates, items and payments. REST API v2, OAuth 2.0 client credentials.
Prerequisites
See the full setup instructions baked into the connector (visible in the in-app store when you select the connector). The required environment variables for this connector are:
SELLSY_CLIENT_ID, SELLSY_CLIENT_SECRET
Step 1 — Get credentials
Getting credentials
- Sign in to Sellsy, open Paramètres → API and create an application in the developer area.
- Choose the client credentials flow — it authorises the application against your own account with no browser consent step. You receive a client id and client secret.
- Set
SELLSY_CLIENT_IDandSELLSY_CLIENT_SECRET. AnythingMCP mints and refreshes the access token on its own.
This is API v2, at https://api.sellsy.com/v2. Sellsy's v1 was an entirely different, single-endpoint RPC API — if you find an example that POSTs everything to one URL with a request parameter, that is v1 and it does not apply here.
…(continued in the in-app connector instructions)
Step 2 — Install the adapter
curl -fsSL https://raw.githubusercontent.com/HelpCode-ai/anythingmcp/main/docker-compose.quickstart.yml -o docker-compose.yml
printf 'JWT_SECRET=%s\nENCRYPTION_KEY=%s\n' "$(openssl rand -hex 32)" "$(openssl rand -hex 32)" > .env
docker compose up -d
Step 3 — Add the connector in Muse
Your server URL: in AnythingMCP, open MCP Servers → the server this connector is on, and copy its URL (
https://cloud.anythingmcp.com/mcp/…). Use it wherever this guide showsYOUR_SERVER_ID.
Muse adds remote MCP servers as custom connectors and signs in to them with OAuth.
- In Muse, open Settings → Connectors and choose Add custom connector.
- Paste the MCP server URL
https://cloud.anythingmcp.com/mcp/YOUR_SERVER_ID. - Muse opens the AnythingMCP sign-in page: sign in and approve access.
- In a chat, ask Muse for something that needs the
Sellsytools.
You can also set it up from a chat, on the web, in the iOS and Android apps or in WhatsApp. Send Muse this message:
Create a Custom Connector for a new remote MCP server, then connect to it:
Name: AnythingMCP
Transport: remote streamable HTTP
URL: https://cloud.anythingmcp.com/mcp/YOUR_SERVER_ID
Auth: OAuth
Self-hosting? Use your instance's public HTTPS address instead of https://cloud.anythingmcp.com. Muse connects from Meta's cloud, so localhost does not work.
Available tools
| Tool | What it does |
|---|---|
sellsy_list_companies | List client companies with their name, SIRET, VAT number, address and owner |
sellsy_search_companies | Search companies with Sellsy's filter object — far more expressive than the plain list |
sellsy_get_company | Read one client company in full: addresses, contacts, tax identifiers, rating and the notes recorded against it |
sellsy_list_contacts | List individual contacts with their name, e-mail, phone, position and the company they belong to |
sellsy_list_invoices | List invoices with their number, date, due date, client, net and gross totals and payment status — the receivables view |
sellsy_search_invoices | Search invoices with Sellsy's filter object — by status, date range, client or amount |
sellsy_get_invoice | Read one invoice in full: every row with its quantity, unit price, discount and VAT, the totals and the payments applied against it |
sellsy_list_estimates | List estimates (devis) with their number, date, client, total and acceptance status — what is out with prospects and not yet won |
sellsy_list_opportunities | List CRM opportunities with their name, client, amount, funnel step and expected close date — the pipeline view |
sellsy_list_items | List catalogue items with their reference, name, unit price, VAT rate and stock tracking flag |
FAQ
Where is Muse available? Meta currently offers Muse in the US and Canada, on the web, in the iOS and Android apps and in WhatsApp.
Does Meta review this connector? No. Meta doesn't review custom connectors. Muse sees only the tools you switched on for this MCP server in AnythingMCP, and you can disconnect it anytime under Settings → Connectors.
Next steps
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