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Teamleader API and MCP server

Teamleader has an API, but your own agent cannot send invoice reminders or follow up quotations with it without an OAuth client you build and maintain. Sign in to Teamleader once in your own Cloud Browser, and your AI agent does the work there for you. The same tools work over MCP for agents and as a REST API for scripts.

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Not affiliated with Teamleader.

Teamleader has no API for this. So we run one for you.

Teamleader's own API, a GitHub MCP server and Cotlet compared
What you need Teamleader's APIGitHub MCP serverCotlet
Invoice reminders, quotation follow-ups, deal moves No Partly Yes, 12 tools
Acts as you, signed in 24/7 No No Yes, Cloud Browser
Fixed for you when Teamleader changes N/A No Yes, tested every 6h
Runs with your laptop off N/A No Yes, hosted

Checked Oct 20, 2026. Sources: Teamleader Developers: Authentication · Teamleader API v2 reference (teamleadercrm/api) · Teamleader Help: What is API in Teamleader Focus? · Teamleader Help: What is Focus AI and what can it do?

Your own Cloud Browser, on 24/7. Sign in once. We keep it connected.

  1. 01Sign in to Teamleader in your own Cloud Browser

  2. 02Connect it for your agents

  3. 03Cotlet keeps it signed in and working

How do I connect Teamleader to Claude, ChatGPT or my code?

AI agents connect over MCP, scripts call the REST API. Both reach the same 12 tools with one API key.

For AI agents: MCP

Add Cotlet to your agent once. Teamleader and every other app you connect show up as its tools.

  • Claude
  • ChatGPT
  • OpenClaw
  • Hermes
  • GrokBot
  • Cursor
  • n8n
  • Any MCP client
  1. 1

    Add Cotlet to your agent

    Claude Code
    claude mcp add --transport http cotlet \
  https://cotlet.dev/mcp/v1 \
  --header "Authorization: Bearer $COTLET_API_KEY"
    Cursor
    {
  "mcpServers": {
    "cotlet": {
      "url": "https://cotlet.dev/mcp/v1",
      "headers": {
        "Authorization": "Bearer ${COTLET_API_KEY}"
      }
    }
  }
}
    Codex
    # ~/.codex/config.toml
[mcp_servers.cotlet]
url = "https://cotlet.dev/mcp/v1"
bearer_token_env_var = "COTLET_API_KEY"

    Paste the snippet for your client. The same server and key serve every app you connect, so you do this once.

For scripts: REST API

Every tool is an endpoint under /api/v1/teamleader with its own method and path, such as POST /api/v1/teamleader/invoices/{invoice_id}/reminder, with the same API key. Our open-source repo has ready scripts to start from.

REST API docs

What can the Teamleader API and MCP server do?

12 tools on your own Teamleader account. Agents call them as operations of the MCP tools teamleader_read and teamleader_write; scripts call each one at its own REST endpoint, with the same inputs and answers.

API reference
Teamleader tools in Cotlet's MCP server and REST API
Tool What it does Access
search_companies Companies that match a search term, with their ID, status and main contact details. read
list_deals Deals with title, customer, phase, estimated value and responsible user. read
get_deal One deal with its phase, customer, contact person, value and quotations. read
list_deal_phases The phases of your deal pipelines, in order, with their IDs. read
list_quotations Quotations with status, deal, customer, total and the day they were sent. read
list_invoices Invoices with number, customer, status, due date, amount due and reminders sent. read
get_invoice One invoice with its lines, totals, payment status and how often it was sent. read
add_note A note on a company, contact or deal. write
create_task A task with a due date, work type and optional deal, assignee and customer. write
move_deal Moves a deal to another phase of its pipeline. write
send_quotation Emails one or more quotations of a deal to the customer. writeasks first
send_invoice_reminder Emails a reminder for an overdue invoice, with the original invoice attached. writeasks first

Scroll the table for all 12 tools.

Ask in plain words. Your agent does the rest.

All Teamleader use cases

Is it safe to connect Teamleader?

You sign in yourself in your own Cloud Browser, we never save your password, and anything that reaches your readers waits for your OK. The browser profile is encrypted in the EU. Independent scanners grade cotlet.dev A+.

Security overview

How much do the Teamleader API and MCP server cost?

One price for both: a tool call costs the same over MCP or REST. Free 7-day trial with 2,000 credits, no card needed. Then one-time credit packs, no subscription, valid 12 months. Most calls use 25 credits, and your Cloud Browser uses 50 credits a day while Teamleader is enabled for agents, so 20 calls a day come to 550 credits.

See full pricing
Cotlet credit packs: price, credits and calls at 25 credits each
Credits Price, one time Calls at 25 credits Per 1,000 credits
5,000 $29 200 $5.80
15,000 $79 600 $5.27
32,000 $149 1,280 $4.66
60,000 $249 2,400 $4.15

Only successful calls use credits; failed calls and timeouts cost nothing. At a balance of 0 calls pause, never a surprise charge. Authenticate with the Authorization: Bearer header.

Questions

Does Teamleader have an API?

Teamleader has a full public API, version 2, but no official MCP server (checked 20 Oct 2026). Each call is a POST such as companies.list or invoices.send. To use it you register an integration as an OAuth 2 client on the Teamleader Marketplace. Access tokens last 1 hour and each refresh token works once. Teamleader also has Focus AI, an assistant built into the app.

How do I get access?

Sign up free, open Teamleader under Integrations in the console and press Request access. Your free trial starts with your account, no card needed.

Is the MCP server different from the API?

No, only the way in. Cotlet builds each integration as a REST API and puts an MCP server on top, so both have the same 12 tools, the same inputs and answers, one API key and one price. AI agents such as Claude, ChatGPT or Cursor use MCP; scripts, cron jobs and HTTP steps in n8n, Make or Zapier use the REST API.

What is the Cloud Browser?

Your own Chrome that Cotlet runs for you in the EU, around the clock. You open it from the console, sign in to Teamleader yourself and press Enable for agents. Your agent's calls go through it, from its IP with its cookies, so Teamleader sees the browser you signed in with. Password saving is off and the profile is stored encrypted with AES-256-GCM.

Can my agent act without asking me?

Not on anything that reaches other people: send_quotation, send_invoice_reminder wait for your OK by default. You can switch that off per tool for scheduled runs.

Is Focus AI the same as an MCP server for my own agent?

No. Teamleader describes Focus AI as the assistant built into Teamleader Focus. It works in a chat inside the app, shows a preview and waits for your confirmation, and it uses AI credits shared by the whole account: 100 a month on Go and Smart, 200 on Move and Grow, 300 on Boost and Flow. Its help pages describe no MCP server or API for it (checked 20 Oct 2026).

What Teamleader role or package does my agent need?

Your own user, with the permissions an admin gave it under Settings > Users. A new user sees only some modules, such as contacts, companies, the calendar and the dashboard, until an admin widens access, and a call outside your permissions fails. The built-in automatic reminders for overdue invoices are not in the GO and SMART packages, but this integration does not depend on them.

Does the integration use the Teamleader API?

No. It works in your own signed-in Teamleader Focus account, so you do not register an OAuth integration or renew tokens. The API stays open to you if you build your own; Teamleader allows a separate test account for that, which you request at api@teamleader.eu.

Should I use a Teamleader MCP server from GitHub instead?

Pick one if you want the code on your own computer and do not mind the upkeep: you install it, sign it in and fix it when Teamleader changes. Pick Cotlet if you want it hosted and kept working for you.

Can I use it in n8n, Make or Zapier?

Yes. Add https://cotlet.dev/mcp/v1 in n8n's MCP Client node, or call the REST endpoints from an HTTP step in Make or Zapier.

Who runs Cotlet?

Cotlet is run by Take Group, a Polish software company working since 2019. Take Group runs about 3,200 websites on its own systems and has its own DevOps team for infrastructure security. We built and used integrations like this inside the company for years before opening them as Cotlet.

Is Cotlet affiliated with Teamleader?

No. Cotlet is independent and not affiliated with Teamleader.

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