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e-conomic API and MCP server

e-conomic's API covers invoices and journals, but it takes an AppSecretToken from your own app plus an AgreementGrantToken for every accounting agreement, and code you write and host. Sign in to e-conomic 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 e-conomic.

e-conomic has no API for this. So we run one for you.

e-conomic's own API, a GitHub MCP server and Cotlet compared
What you need e-conomic's APIGitHub MCP serverCotlet
Use without an API key or code No Partly Yes, 11 tools
Acts as you, signed in 24/7 No No Yes, Cloud Browser
Fixed for you when e-conomic changes N/A No Yes, tested every 6h
Runs with your laptop off N/A No Yes, hosted

Checked Oct 14, 2026. Sources: e-conomic Developer: Connect to the REST API · e-conomic Developer: overview · e-conomic REST API documentation · e-conomic support: booking and sending sales invoices through the API

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

  1. 01Sign in to e-conomic in your own Cloud Browser

  2. 02Connect it for your agents

  3. 03Cotlet keeps it signed in and working

How do I connect e-conomic to Claude, ChatGPT or my code?

AI agents connect over MCP, scripts call the REST API. Both reach the same 11 tools with one API key.

For AI agents: MCP

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

REST API docs

What can the e-conomic API and MCP server do?

11 tools on your own e-conomic account. Agents call them as operations of the MCP tools e_conomic_read and e_conomic_write; scripts call each one at its own REST endpoint, with the same inputs and answers.

API reference
e-conomic tools in Cotlet's MCP server and REST API
Tool What it does Access
list_customers Customers in the register with number, name, currency and payment terms. read
get_customer One customer with contact data, terms and balance. read
list_products Products with number, name and sales price. read
list_draft_invoices Draft invoices with customer, date, line count and totals. read
list_unpaid_invoices Booked invoices with a remaining balance, with due date and days overdue. read
get_invoice_pdf Download link for the PDF of a booked invoice. read
list_journal_entries Entries in a journal, filtered by type, text or voucher number. read
create_customer Add a customer to the register. write
create_draft_invoice Create a draft invoice for a customer with lines. The draft is not booked. write
book_invoice Book a draft invoice, and optionally send it by email or EAN. writeasks first
create_finance_voucher Post a finance voucher to a journal. writeasks first

Scroll the table for all 11 tools.

Ask in plain words. Your agent does the rest.

All e-conomic use cases

Is it safe to connect e-conomic?

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 e-conomic 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 e-conomic 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 e-conomic have an API?

Yes, e-conomic has a full REST API with customers, draft and booked invoices, invoice PDFs and journal vouchers (checked 14 Oct 2026), but you get it through a developer agreement: you create an app that holds an AppSecretToken, and each accounting user grants it access with an AgreementGrantToken. The developer docs list no official MCP server.

How do I get access?

Sign up free, open e-conomic 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 11 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 e-conomic yourself and press Enable for agents. Your agent's calls go through it, from its IP with its cookies, so e-conomic 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: book_invoice, create_finance_voucher wait for your OK by default. You can switch that off per tool for scheduled runs.

Can my agent change an invoice after it is booked?

No. e-conomic documents that a booked invoice cannot be edited, so the agent works on drafts and books them only after your OK.

Should I use a e-conomic 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 e-conomic 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 e-conomic?

No. Cotlet is independent and not affiliated with e-conomic.

Give your agent access to e-conomic.

Free 7-day trial with 2,000 credits, no card needed.

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