MCP server

Sellsy MCP by usefulapi

io.usefulapi/sellsy

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Search and read Sellsy companies, contacts, opportunities, invoices and tasks; create records.

Website Source

At a glance

Type

MCP server

Publisher

usefulapi.io (verified by the MCP Registry)

Status

Working at last check

Tools

44

Token cost

About 16,962 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http sellsy https://sellsy.usefulapi.io/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.sellsy]
url = "https://sellsy.usefulapi.io/mcp"

Gemini CLI

{"mcpServers":{"sellsy":{"httpUrl":"https://sellsy.usefulapi.io/mcp"}}}

Cursor

{"mcpServers":{"sellsy":{"url":"https://sellsy.usefulapi.io/mcp"}}}

VS Code

{"servers":{"sellsy":{"type":"http","url":"https://sellsy.usefulapi.io/mcp"}}}

Antigravity

agy mcp add sellsy https://sellsy.usefulapi.io/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"sellsy","server_url":"https://sellsy.usefulapi.io/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"sellsy","server_url":"https://sellsy.usefulapi.io/mcp"}

Tools

• sellsy_create_comment ~278 tokens
  WRITE: add a comment (note) to a company, individual, contact, opportunity or document. Visible to the Sellsy staff, not sent to the customer. Needs comments.write.
• sellsy_create_company ~343 tokens
  WRITE: create a company record in Sellsy (a prospect, client or supplier). Needs companies.write. Nothing is sent to the company.
• sellsy_create_contact ~282 tokens
  WRITE: create a contact (a person) in Sellsy. It is not linked to a company by this call. Needs contacts.write.
• sellsy_create_individual ~319 tokens
  WRITE: create an individual (a private person as prospect, client or supplier) in Sellsy. Needs individuals.write.
• sellsy_create_opportunity ~566 tokens
  WRITE: create a sales opportunity linked to a company, individual or contact. Needs a pipeline id and one of its step ids (see sellsy_list_opportunity_pipelines and sellsy_list_pipeline_steps). Needs opportunities.write.
• sellsy_create_task ~495 tokens
  WRITE: create a task, optionally attached to a record and assigned to staff. Needs a label id (see sellsy_list_task_labels) and a due date-time. Needs tasks.write.
• sellsy_get_company ~232 tokens
  Get one company by id. Needs companies.read.
• sellsy_get_contact ~232 tokens
  Get one contact by id. Needs contacts.read.
• sellsy_get_credit_note ~236 tokens
  Get one credit note by id. Needs credit-notes.read.
• sellsy_get_estimate ~240 tokens
  Get one estimate by id, with its rows and amounts. Needs estimates.read.
• sellsy_get_individual ~235 tokens
  Get one individual by id. Needs individuals.read.
• sellsy_get_invoice ~242 tokens
  Get one invoice by id, with its rows, amounts and status. Needs invoices.read.
• sellsy_get_item ~230 tokens
  Get one catalog item by id. Needs items.read.
• sellsy_get_opportunity ~236 tokens
  Get one opportunity by id. Needs opportunities.read.
• sellsy_get_order ~229 tokens
  Get one order by id. Needs orders.read.
• sellsy_get_task ~228 tokens
  Get one task by id. Needs tasks.read.
• sellsy_list_companies ~424 tokens
  List companies (customers, prospects, suppliers) with paging. Needs companies.read.
• sellsy_list_company_contacts ~267 tokens
  List the contacts linked to one company (GET /companies/{id}/contacts). Needs companies.read and contacts.read.
• sellsy_list_contacts ~416 tokens
  List contacts (people at companies) with paging. Needs contacts.read.
• sellsy_list_credit_notes ~417 tokens
  List credit notes with paging. Needs credit-notes.read.
• sellsy_list_estimates ~423 tokens
  List estimates (quotes) with paging. Needs estimates.read.
• sellsy_list_individuals ~428 tokens
  List individuals (private customers, prospects, suppliers) with paging. Needs individuals.read.
• sellsy_list_invoice_payments ~258 tokens
  List the payments linked to one invoice. Needs invoices.read and payments.read.
• sellsy_list_invoices ~417 tokens
  List invoices with paging. Needs invoices.read.
• sellsy_list_items ~420 tokens
  List catalog items (products, services, shipping, packaging) with paging. Needs items.read.
• sellsy_list_opportunities ~422 tokens
  List sales opportunities with paging. Needs opportunities.read.
• sellsy_list_opportunity_pipelines ~230 tokens
  List the sales pipelines (needed to create an opportunity: pipeline id and step id). Needs opportunities.read.
• sellsy_list_orders ~419 tokens
  List orders with paging. Needs orders.read.
• sellsy_list_pipeline_steps ~255 tokens
  List the steps of one opportunity pipeline. Needs opportunities.read.
• sellsy_list_staffs ~427 tokens
  List the staff members of the account (the list may hold only yourself, depending on the Sellsy plan). Needs staffs.read.
• sellsy_list_task_labels ~218 tokens
  List the task labels (a label id is required to create a task). Needs tasks.read.
• sellsy_list_tasks ~405 tokens
  List tasks with paging. Needs tasks.read.
• sellsy_search ~335 tokens
  Free-text search over companies, individuals, contacts, opportunities, items, documents and staff in one call (GET /search). Use it to find a record by name, email or number when you do not know its type. Needs the search.read scope.
• sellsy_search_comments ~538 tokens
  Search comments and notes by author, date, parent comment or the company/individual/contact they are attached to. Needs comments.read.
• sellsy_search_companies ~583 tokens
  Search companies by name, email, type (prospect/client/supplier), reference, VAT, SIRET, country, postal code, creation or update date. Needs companies.read.
• sellsy_search_contacts ~545 tokens
  Search contacts by last name, email, phone, linked company or individual, creation date. Needs contacts.read.
• sellsy_search_estimates ~610 tokens
  Search estimates by status, number, date, currency, owner, contact or related company/individual/opportunity. Needs estimates.read.
• sellsy_search_individuals ~555 tokens
  Search individuals by name, email, type, reference, country, postal code, creation or update date. Needs individuals.read.
• sellsy_search_invoices ~624 tokens
  Search invoices by status (draft/due/payinprogress/paid/late/cancelled), number, date, currency, owner, or related company/individual/opportunity. Use it for unpaid or late invoices. Needs invoices.read.
• sellsy_search_items ~491 tokens
  Search catalog items by name, reference or type. Needs items.read.
• sellsy_search_opportunities ~590 tokens
  Search opportunities by name, number, pipeline, step, status (open/won/lost/cancelled/closed/late), amount, owner or due date. Needs opportunities.read.
• sellsy_search_orders ~561 tokens
  Search orders by status or delivery status, or related company/individual/opportunity. Needs orders.read.
• sellsy_search_payments ~508 tokens
  Search payments by status (pending/confirmed/rejected/failed/refund) or related company/individual. Needs payments.read.
• sellsy_search_tasks ~553 tokens
  Search tasks by status (todo/done), owner, assignee, label, due date or related record. Needs tasks.read.

Browse

• Invoicing and accounting

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