MCP server for ABRA Flexi — accounting, contacts, stock and draft-checked invoice creation. For accounting teams with ABRA Flexi Cloud and a dedicated REST API user. Hosted by usefulapi — connect from Claude, ChatGPT, Cursor, or any MCP client.
Team and Enterprise: an Owner adds the connector for the organization first.
Run this command, then run /mcp in Claude Code to log in:
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"abra-flexi": {
"url": "https://abra-flexi.usefulapi.io/mcp"
}
}
}Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"abra-flexi": {
"type": "http",
"url": "https://abra-flexi.usefulapi.io/mcp"
}
}
}No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.
Run these commands. The second one opens the login page:
Other MCP clients (Windsurf, Cline, Zed and more): add the URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser. Do not add an Authorization header: see Before you connect.
List issued invoices and inspect a received invoice with its line items.
abraflexi_list_issued_invoices abraflexi_get_received_invoice
Read products, stock cards and stock movements to investigate availability and pricing.
abraflexi_list_products abraflexi_list_stock_cards abraflexi_list_stock_movements
Read bank statement lines and cash-desk movements for a selected period. These tools do not execute payments.
abraflexi_list_bank_movements abraflexi_list_cash_movements
Inspect the customer and validate invoice input with dry_run before saving. Saving may book accounting entries or affect stock according to the document type.
Changes data · abraflexi_get_contact abraflexi_create_issued_invoice
The login page asks for your ABRA Flexi Cloud instance, Company id, API user name and API user password.
The instance is the first part of your cloud address (https://yourname.flexibee.eu); the company id is the part after /c/ (for example https://yourname.flexibee.eu/c/acme_s_r_o_). Create a dedicated user for this connection in ABRA Flexi (as ABRA recommends for every integration); the Přístup k API service must be active (Nastavení → Licence a předplatné). Only ABRA Flexi Cloud instances on flexibee.eu are supported. Use a dedicated REST API user restricted to this company and the permissions you need. Requested accounting, customer, stock and bank data passes to your chosen AI client and its LLM provider. Three write tools create or update contacts and create issued invoices; an invoice may be booked or affect stock according to its document type. Use dry_run to validate before saving. This server does not send invoices, execute payments or delete records. Disable this API user or change its password in Flexi to stop vendor access. Billing follows the verified instance/company and survives password rotation. Your vendor API quota and possible overage fees still apply.
Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your ABRA Flexi Cloud instance, Company id, API user name and API user password. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
Turn on the ABRA Flexi connector, then ask in plain words. The AI picks the tools.
| Tool | Type | What it does |
|---|---|---|
abraflexi_get_company | read | Get the company Show the ABRA Flexi company the login points to (name, company id, state). Use it to check the connection. |
abraflexi_list_evidences | read | List evidences List the evidences (tables) of the company with their Czech path and name, for example faktura-vydana = issued invoices, adresar = address book, cenik = price list. Use a path from here as 'evidence' in abraflexi_list_records / abraflexi_get_record (only business evidences are readable there). |
abraflexi_list_issued_invoices | read | List issued invoices (sales invoices to customers) List issued invoices (sales invoices to customers), newest first by default, filtered by payment status, customer/supplier code, dates or text. Money fields: sumCelkem = total, zbyvaUhradit = still to pay (in the company currency), the *Men fields are in the document currency. Returns total, next_start for paging. Pass 'fields' for other properties. |
abraflexi_get_issued_invoice | read | Get an issued invoice Get one issued invoice with all its fields and its line items. Pass the numeric id (from the list) or an identifier such as code:<number>. |
abraflexi_list_received_invoices | read | List received invoices (bills from suppliers) List received invoices (bills from suppliers), newest first by default, filtered by payment status, customer/supplier code, dates or text. Money fields: sumCelkem = total, zbyvaUhradit = still to pay (in the company currency), the *Men fields are in the document currency. Returns total, next_start for paging. Pass 'fields' for other properties. |
abraflexi_get_received_invoice | read | Get an received invoice Get one received invoice with all its fields and its line items. Pass the numeric id (from the list) or an identifier such as code:<number>. |
abraflexi_list_contacts | read | List or search contacts List or search the address book (adresar): customers and suppliers with code (kod), name, company id (ic), VAT id (dic), e-mail, phone and address. The code from here identifies the customer in invoices. |
abraflexi_get_contact | read | Get a contact Get one address-book entry with all its fields. Pass the numeric id (from abraflexi_list_contacts) or code:<kod>. |
abraflexi_list_products | read | List or search products List or search the price list (cenik): products and services with code, name, EAN, prices (without and with VAT), purchase price and whether they are stocked. |
abraflexi_list_stock_cards | read | List stock cards List stock cards (skladova-karta): the quantity on hand (stavMJ), reserved (rezervMJ) and available (dostupMj) per product and warehouse, with min/max limits and average price. |
abraflexi_list_stock_movements | read | List stock movements List stock movements (skladovy-pohyb: receipts, issues, transfers), newest first by default, filtered by warehouse or dates. |
abraflexi_list_bank_movements | read | List bank movements List bank movements (banka: bank statement lines, incoming and outgoing payments), newest first by default, filtered by dates, bank account, variable symbol or text. sumCelkem is the amount; typPohybuK says incoming or outgoing. |
abraflexi_list_cash_movements | read | List cash movements List cash desk movements (pokladni-pohyb: cash receipts and payouts), newest first by default, filtered by dates, cash desk, variable symbol or text. sumCelkem is the amount; typPohybuK says incoming or outgoing. |
abraflexi_list_orders | read | List orders List orders: direction 'received' = customer orders (objednavka-prijata, default), 'issued' = purchase orders to suppliers (objednavka-vydana). Newest first by default. |
abraflexi_list_records | read | List records of an evidence List records of any business evidence (invoice types, bank accounts, warehouses, cost centres, currencies, ledger entries, price-list items, ...) with an optional filter in ABRA Flexi's filter language, for example filter "zbyvaUhradit > 0 and datSplat < now()" or "kod = 'ABC'". Operators: = <> < <= > >= like, like similar (ignores diacritics), begins, ends, between, in, and, or, not; dates as 2026-01-31. Without 'fields' the vendor's summary fields are returned. |
abraflexi_get_record | read | Get a record of an evidence Get one record of any business evidence with all its fields (detail full), by numeric id or identifier such as code:ABC. Field names are the vendor's Czech property names. |
abraflexi_create_contact | write | Create a contact WRITE: create a new address-book entry (customer or supplier) in ABRA Flexi. It only adds a record; nothing is sent. Use dry_run first to see the result without saving. Check abraflexi_list_contacts first so you do not create a duplicate. |
abraflexi_update_contact | write | Update a contact WRITE: change fields of an existing address-book entry (only the fields you pass are changed). The entry must exist (a wrong id is an error, nothing is created). This overwrites the current values. Use dry_run first to check. |
abraflexi_create_issued_invoice | write | Create an issued invoice WRITE: create an issued invoice (faktura-vydana) with line items in ABRA Flexi. The invoice is saved as a normal document with the next number of its series, and ABRA Flexi may account it automatically according to the settings of the chosen invoice type; this tool does NOT send it, mark it paid or e-mail it. Use dry_run first to see the computed totals and validation errors without saving. Find document_type_code with abraflexi_list_records (evidence typ-faktury-vydane) and customer_code with abraflexi_list_contacts. |
abraflexi_usage_status | Usage status (free-tier meter) Report the caller's current usage: the plan, calls used this month, the limit of the plan (the free monthly cap or the Pro fair use limit), remaining, and whether the limit is reached. Read-only; does not count against the meter. | |
abraflexi_request_feature | Request a missing feature Tell usefulapi that the user needs something the ABRA Flexi tools cannot do yet (a missing tool, field or filter). Call it only when the user asks for something none of the tools can do, and tell the user that you send the request. Do not call it for errors or for normal requests. Do not include personal data, credentials or customer records. Stored with the product name and the client type (for example Claude or Cursor), without the user's account. At most 5 requests per day. Does not count against the meter. | |
abraflexi_upgrade | Upgrade to Pro (unlimited*) Get Pro: unlimited tool calls (fair use limit: 10,000 a month) on ABRA Flexi (the free tier caps monthly usage). Plans: "monthly" — $9/month; "yearly" — $90/year (2 months free). Cancel any time: Pro then runs to the end of the paid period, so it also suits a one-time job. *A fair use limit applies. For heavy use (near Pro's limit): "plus" or "plus_yearly" — Pro+, $39/month or $390/year, unlimited tool calls (fair use limit: 100,000 a month); an existing Pro subscription changes to Pro+ in place (needs confirm: true; the price difference for the rest of the period is charged at once). Otherwise returns a short link to open in your browser (it opens Stripe Checkout); after payment the account upgrades automatically. Does not count against the meter. | |
abraflexi_cancel_subscription | Cancel the Pro subscription Cancel the caller's ABRA Flexi Pro subscription at the end of the paid period (no refund for the current period; Pro continues until then, then the free tier applies). Requires confirm: true. Run abraflexi_upgrade later to undo the cancel before the period ends. Does not count against the meter. |
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Proper cloud instance and company | $9/mo · $90/yr | Unlimited* |
*Pro fair use limit: 10,000 tool calls a month on this server. For more, write to [email protected].
Pro covers this ABRA Flexi server only. Subscribe with abraflexi_upgrade (it returns a Stripe Checkout link). Cancel any time with abraflexi_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running abraflexi_upgrade before then undoes the cancel. Or write to [email protected].
Review issued and received invoices. Check stock and pricing. Review bank and cash movements. Prepare an issued invoice. See what you can do for the details.
No. usefulapi is an independent service. It is not affiliated with or endorsed by ABRA Flexi. The server calls the ABRA Flexi API with your own ABRA Flexi access, so it sees only the data that your account can see.
Yes. In Claude, add this server's URL as a custom connector. In ChatGPT, add it as a custom MCP server in Plugins. Then log in once. Cursor, VS Code, Claude Code and Codex work too. See the setup steps.
The login page asks for your ABRA Flexi Cloud instance, Company id, API user name and API user password. See Before you connect for where to find them.
No. Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your ABRA Flexi Cloud instance, Company id, API user name and API user password. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
The login stores them encrypted in the authorization grant of your connection. The server uses them to call the ABRA Flexi API for you and to derive a private account id for usage metering. usefulapi does not show them on any page or in any reply. To stop all access, remove the connector and change or delete these credentials in ABRA Flexi.
Yes, if you approve it. 3 of the 19 ABRA Flexi tools can create or change data. The other 16 are marked read-only. Most MCP clients ask you to approve a tool call before it runs.
The Free plan gives 50 tool calls / month. Pro costs $9/mo or $90/yr, with unlimited tool calls (fair use limit: 10,000 tool calls a month), for this ABRA Flexi server only. Cancel any time: Pro then runs to the end of the paid period. Run abraflexi_usage_status to see how many calls you used.
Ask the AI to run abraflexi_upgrade: it returns a Stripe Checkout link. To cancel, run abraflexi_cancel_subscription. Pro continues to the end of the paid period.
Tell the AI what you wanted to do. It can send the request with abraflexi_request_feature. We store the text with the server name, the type of AI client and the tool you tried, not with your account, and read every request when we plan new tools. You can send up to 5 requests per day.
Any client that supports remote MCP servers (Streamable HTTP) with OAuth login: Claude (web and desktop), Claude Code, ChatGPT, Codex, Cursor, VS Code, Windsurf and others.
This is a Model Context Protocol endpoint — meant to be connected from an AI client, not opened in a browser. An invalid_token response at the URL is the auth gate working as designed; clients authenticate automatically.
Need a tool this server does not have, or a connection to another system? We build custom integrations and MCP servers.