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Alegra API and MCP server

Alegra's API works only on the Plus plan with an API token, and its official agent server only reads. Sign in to Alegra 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 Alegra.

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

Alegra's own API, a GitHub MCP server and Cotlet compared
What you need Alegra's APIGitHub MCP serverCotlet
Invoices and payments without Plus or a token No Partly Yes, 10 tools
Acts as you, signed in 24/7 No No Yes, Cloud Browser
Fixed for you when Alegra changes N/A No Yes, tested every 6h
Runs with your laptop off N/A No Yes, hosted

Checked Oct 14, 2026. Sources: Alegra Help: Alegra API, connect your account with other apps · Alegra developers: Authentication · Alegra developers: MCP server (read-only) · Alegra triggers and actions on Zapier

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

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

  2. 02Connect it for your agents

  3. 03Cotlet keeps it signed in and working

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

AI agents connect over MCP, scripts call the REST API. Both reach the same 10 tools with one API key.

For AI agents: MCP

Add Cotlet to your agent once. Alegra 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/alegra with its own method and path, such as POST /api/v1/alegra/contacts/{contact_id}/invoices, with the same API key. Our open-source repo has ready scripts to start from.

REST API docs

What can the Alegra API and MCP server do?

10 tools on your own Alegra account. Agents call them as operations of the MCP tools alegra_read and alegra_write; scripts call each one at its own REST endpoint, with the same inputs and answers.

API reference
Alegra tools in Cotlet's MCP server and REST API
Tool What it does Access
list_invoices Sales invoices with number, client, dates, status, total and balance, filtered by status, client or due date. read
get_invoice One invoice with its lines, taxes, payments and client details. read
list_contacts Clients and suppliers with name, tax ID, email and phone. read
list_items Products and services you can put on an invoice, with price and tax. read
list_bank_accounts Bank and cash accounts in Alegra with the ID needed to record a payment. read
list_payments Payments received or made, with date, method, bank account and the invoices each one settled. read
create_contact Add a client, a supplier or both to Contactos. writeasks first
create_invoice Create a sales invoice for a contact as a draft or an open invoice. writeasks first
email_invoice Send a sales invoice by email to one or more addresses. writeasks first
record_payment Record a payment received on one invoice, on a bank account, with date and method. writeasks first

Scroll the table for all 10 tools.

Ask in plain words. Your agent does the rest.

All Alegra use cases

Is it safe to connect Alegra?

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 Alegra 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 Alegra 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 Alegra have an API?

Yes, Alegra has a REST API for invoices, contacts, payments and items (checked 14 Oct 2026). You call it with your account email and an API token, and Alegra Help says integrations need the Plus plan. Alegra also runs an official MCP server, but it is read-only: an agent can look up invoices and cannot create or send one.

How do I get access?

Sign up free, open Alegra 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 10 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 Alegra yourself and press Enable for agents. Your agent's calls go through it, from its IP with its cookies, so Alegra 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: create_contact, create_invoice, email_invoice, record_payment wait for your OK by default. You can switch that off per tool for scheduled runs.

Does it work for invoices in my country?

Alegra's invoice form differs by country: Zapier lists separate create-invoice actions for Argentina, Chile, Colombia, Costa Rica, Mexico, Panama and Peru. Start with status draft, check the draft in Alegra, and only then open or stamp it. A stamped invoice is sent to your tax authority, which is why every invoice tool asks for your OK by default.

Should I use a Alegra 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 Alegra 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 Alegra?

No. Cotlet is independent and not affiliated with Alegra.

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