Integration · Accounting

Connect Claude & ChatGPT to Billage

Ask your AI which Billage invoices are still unpaid, what a client has been billed, or to draft a quote. It can search and create invoices, budgets and spendings, look up clients, providers and contacts, and follow up on leads and activities. It can also read time entries, so you can check hours logged per project without opening Billage.

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Free plan, no credit card. Takes about a minute.

Try asking

“Which invoice due dates are unpaid for this month?”
The AI searches invoice due dates by status and date range and lists the open amounts with the client for each.
“Create a quote for Hotel Mirador: 20 hours of web maintenance at 45 EUR.”
It finds the client account and creates a budget with one line item and today's date.
“Invoice Garcia Consulting for the March retainer.”
It looks up the client and creates a sales invoice with the line items, series and due date you give it. This creates a real accounting document.

What your AI can do

Invoices, quotes and expenses

Search, read, create and update sales invoices, create and read budgets, record spendings and track invoice due dates.

Clients and contacts

Search, create and update client and provider accounts and the contact people linked to them.

Sales and time

Create and update leads, log calls, meetings and tasks as activities, and search logged time entries by project or user.

“Record the Adobe subscription invoice from yesterday as an expense.”
It finds the provider and records a spending with the line, date and category. It records the expense but does not pay it.
“Move the Rivera lead to the next phase and set the amount to 8,000 EUR.”
It searches leads, then updates the lead's phase and amount.
“How many hours did we log on the website project last week?”
It searches time entries by project and date range and adds up the hours.

296 tools for Billage

These tools are switched on when you connect. You can switch any of them off, or require your approval before it runs.

create_accountChanges dataCreate a client or provider account. Pass the fields in `body`, e.g. business_name, vat, email, phones, address, and client/provider flags. Search first to avoid duplicates.
create_account_account_bank_createChanges dataCreate a new account. Search accounts first to avoid duplicates. API summary: Post/Create new account bank.
create_account_account_field_value_createChanges dataCreate a new account. Search accounts first to avoid duplicates. API summary: Create account custom field.
create_account_account_field_value_create_quickChanges dataCreate a new account for a account. Required: field name or body. Search accounts first to avoid duplicates. API summary: Create account custom field.
create_account_custom_fieldChanges dataCreate a new account. Search accounts first to avoid duplicates. API summary: Create account custom field.
create_activityChanges dataCreate an activity (task, call or meeting) with `type`, `date`, `description`, duration, and the related `customer`, `contact` or `lead`.
create_addressChanges dataCreate a new address. Search addresses first to avoid duplicates. API summary: Post/Create new account delivery address.
create_aggregationChanges dataCreate a new aggregation. API summary: Create bank aggregation using login.
create_aggregation_accountChanges dataCreate a new account for a aggregation. Search accounts first to avoid duplicates. API summary: Create bank aggregation using account id.
create_aggregation_productChanges dataCreate a new product for a aggregation. Search products first to avoid duplicates. API summary: Create bank aggregation using product.
create_aggregation_select_otpChanges dataCreate a new select otp for a aggregation. API summary: Create bank aggregation using OTP.
create_bankChanges dataCreate a new account. Required: alias. Search accounts first to avoid duplicates. API summary: Create bank.
create_budgetChanges dataCreate a budget (quote) for a `customer` with `concepts` (line items), `date`, currency and notes.
create_campaignChanges dataCreate a new campaign. API summary: Post/Create campaign.
create_categoryChanges dataCreate a new category. Search categories first to avoid duplicates. API summary: Post/Create invoice category.
create_category_spending_category_createChanges dataCreate a new category. Search categories first to avoid duplicates. API summary: Post/Create spending category.
create_changeChanges dataCreate a new change. API summary: Authentication change company.
create_contactChanges dataCreate a contact person with first_name, last_name, email, phones, job title (`charge`), linked `account` and tags.
create_contact_tagChanges dataUpdate an existing tag identified by tag name. API summary: Create contact tag.
create_external_logChanges dataCreate a new log for a external. Required: type or body. API summary: logs for by external id.
create_invoiceChanges dataCreate a sales invoice for a `customer` with `concepts` (line items), `date`, `serie`, `payment_method` and `expiration_date`. Creates a real accounting document.
create_invoice_invoice_change_color_createChanges dataCreate a new invoice. Search invoices first to avoid duplicates. API summary: Post/Change color invoice.
create_invoice_invoice_rectify_createChanges dataCreate a new invoice. Search invoices first to avoid duplicates. API summary: Post/Rectify invoice.
create_invoice_spending_change_colorChanges dataCreate a new invoice. Search invoices first to avoid duplicates. API summary: Post/Change color spending.
create_invoice_tagChanges dataUpdate an existing tag identified by tag name. API summary: Create invoice tag.
create_leadChanges dataCreate a lead (sales opportunity) with `name`, `customer`, `amount`, `funnel`, `phase`, dates and description.
create_manufacturerChanges dataCreate a new manufacturer. Search manufacturers first to avoid duplicates. API summary: Post/Create invoice manufacturer.
create_messageChanges dataCreate a new message. Search messages first to avoid duplicates. API summary: Post/Create delivery note.
create_orderChanges dataCreate a new order. Search orders first to avoid duplicates. API summary: Post/Create purchase.
create_password_changeDeletesCreate a new password change. Destructive action; may require approval. API summary: Change password.
create_paymentChanges dataCreate a new payment. Search payments first to avoid duplicates. API summary: Post/Create new payment.
create_payment_accountChanges dataCreate a new account for a payment. Search accounts first to avoid duplicates. API summary: Create bank aggregation transaction by account.
create_payment_productChanges dataCreate a new product for a payment. Search products first to avoid duplicates. API summary: Create bank aggregation transaction by product.
create_payment_select_otpChanges dataCreate a new select otp for a payment. API summary: Create bank aggregation transaction by OTP.
create_price_listChanges dataCreate a new price list. Search price lists first to avoid duplicates. API summary: Post/Create price list.
create_processedChanges dataCreate a new processed. API summary: logs for by external id.
create_productChanges dataCreate a new product. Search products first to avoid duplicates. API summary: Post/Create product.
create_product_product_families_createChanges dataCreate a new product. Search products first to avoid duplicates. API summary: Post/Create product family.
create_queueChanges dataCreate a new queue. API summary: Enqueue external integrations.
create_receiptChanges dataCreate a new receipt. Search receipts first to avoid duplicates. API summary: Post/Create new receipt.
create_registerChanges dataCreate a new register. Required: email or password. API summary: User register.
create_seriesChanges dataCreate a new series. Search series first to avoid duplicates. API summary: Post/Create new invoice rectify serie.
create_series_invoice_series_createChanges dataCreate a new series. Search series first to avoid duplicates. API summary: Post/Create new invoice serie.
create_series_spending_series_createChanges dataCreate a new series. Search series first to avoid duplicates. API summary: Post/Create new spending serie.
create_spendingChanges dataRecord a spending (expense or supplier invoice) with `provider`, `concepts` (line items), `date`, `category` and `payment_method`. Records the expense; it does not pay it.
create_storeChanges dataCreate a new store. Search stores first to avoid duplicates. API summary: Post/Create product.
create_userChanges dataCreate a new user. Search users first to avoid duplicates. API summary: Post/Create new user.
create_user_avatarChanges dataCreate a new avatar for a user. API summary: Save user avatar by id.
delete_accountDeletesPermanently delete a account by account id. Destructive action; may require approval. API summary: Remove bank account by bank id.
delete_account_account_delete_by_idDeletesPermanently delete a account by account id. Destructive action; may require approval. API summary: Deleting accounts by id.
delete_account_bank_delete_by_idDeletesPermanently delete a account by account id. Destructive action; may require approval. API summary: Deleting banks by id.
delete_account_tagDeletesPermanently delete a tag by tag name. Destructive action; may require approval. API summary: Remove tag to an account.
delete_addressDeletesPermanently delete a address by address id. Destructive action; may require approval. API summary: Remove account address by account address id.
delete_budgetDeletesPermanently delete a budget by budget id. Destructive action; may require approval. API summary: Delete budget.
delete_campaignDeletesPermanently delete a campaign by campaign id. Destructive action; may require approval. API summary: Delete campaign.
delete_categoryDeletesPermanently delete a category by category id. Destructive action; may require approval. API summary: Remove invoice category by id.
delete_companiesMoves moneyPermanently delete a company. Financial or irreversible action; may require approval. API summary: company cancellation.
delete_contactDeletesPermanently delete a contact by contact id. Destructive action; may require approval. API summary: Remove contact by id.
delete_contact_tagDeletesPermanently delete a tag by tag name. Destructive action; may require approval. API summary: Remove tag to a contact.
delete_externalDeletesPermanently delete a external by external id. Destructive action; may require approval. API summary: Cancel company by external id.
delete_invoiceDeletesPermanently delete a invoice by invoice id. Destructive action; may require approval. API summary: Remove invoice by id.
delete_invoice_serieDeletesPermanently delete a series by series id. Destructive action; may require approval. API summary: Delete invoice serie.
delete_invoice_tagDeletesPermanently delete a tag by tag name. Destructive action; may require approval. API summary: Remove tag to an invoice.
delete_leadDeletesPermanently delete a lead by lead id. Destructive action; may require approval. API summary: Remove lead by id.
delete_messageDeletesPermanently delete a message by message id. Destructive action; may require approval. API summary: Remove delivery note by id.
delete_orderDeletesPermanently delete a order by order id. Destructive action; may require approval. API summary: Delete purchase.
delete_productDeletesPermanently delete a product by product id. Destructive action; may require approval. API summary: Remove product by id.
delete_seriesDeletesPermanently delete a series by series id. Destructive action; may require approval. API summary: Delete invoice rectify serie.
delete_spendingDeletesPermanently delete a spending by spending id. Destructive action; may require approval. API summary: Delete spending.
delete_spending_category_by_idDeletesPermanently delete a category by category id. Destructive action; may require approval. API summary: Delete spending category by id.
delete_spending_serieDeletesPermanently delete a series by series id. Destructive action; may require approval. API summary: Delete spending serie.
delete_storeDeletesPermanently delete a store by store id. Destructive action; may require approval. API summary: Delete product by id.
find_a_bank_accounts_by_aliasSearch accounts for a account by q, elements or sort. Use this to find existing accounts before creating a new account. Results are paginated. API summary: Find a bank accounts by alias.
find_a_bank_by_aliasSearch accounts by alias. Use this to find existing accounts before creating a new account. API summary: Find a bank by alias.
find_a_series_by_nameSearch accounts by name. Use this to find existing accounts before creating a new account. API summary: Find a series by name.
find_a_spending_serie_by_nameSearch accounts by name. Use this to find existing accounts before creating a new account. API summary: Find a spending serie by name.
find_account_custom_fieldsSearch accounts by name or elements. Use this to find existing accounts before creating a new account. Results are paginated. API summary: Find account custom fields.
find_account_field_by_nameGet one account by account name. API summary: Find account field by name.
find_account_field_valuesGet one account for a account by account name. API summary: Find account field values.
find_an_account_by_nameSearch accounts by name. Use this to find existing accounts before creating a new account. API summary: Find an account by name.
find_an_account_by_vatList accounts. Optional filters: vat. API summary: Find an account by vat.
find_an_invoice_rectify_serie_by_nameSearch accounts by name. Use this to find existing accounts before creating a new account. API summary: Find an invoice rectify serie by name.
find_an_product_by_aliasList accounts. Optional filters: alias. API summary: Find an product by alias.
find_contact_tags_by_nameGet one tag by tag name. API summary: Find contact tags by name.
find_invoice_serie_by_idGet one series by series id. API summary: Find invoice serie by id.
find_invoice_tag_by_nameGet one tag by tag name. API summary: Find invoice tag by name.
find_invoice_type_by_idGet one invoice by invoice id. API summary: Find Invoice Type by id.
find_manufacturer_by_nameSearch accounts by name. Use this to find existing accounts before creating a new account. API summary: Find manufacturer by name.
find_product_family_by_nameSearch accounts by name. Use this to find existing accounts before creating a new account. API summary: Find product family by name.
find_spending_serie_by_idGet one series by series id. API summary: Find spending serie by id.
find_user_by_emailGet one message by email. API summary: Find user by email.
get_accountGet one account (client or provider) by `account_id`, with contact details, address, tax settings and tags.
get_account_2Get one account by account id. API summary: Get bank account by id.
get_account_bank_find_by_idGet one account by account id. API summary: Getting bank by id.
get_addressGet one address by address id. API summary: Get account address by id.
get_budgetGet one budget (quote) by `budget_id`, with lines, totals, customer and state.
get_campaignGet one campaign by campaign id. API summary: Find campaign by id.
get_categoryGet one category by category id. API summary: Get bank transaction category by id.
get_contactGet one contact by `contact_id`, with email, phones, job title and linked account.
get_current_userGet the signed-in Billage user's profile and company. Use to confirm which account you are working in.
get_externalGet one external by external id. API summary: Find company by external id.
get_external_by_metadataGet one external by external scope. API summary: find companies by metadata value.
get_external_by_vatGet one external by external scope. API summary: find companies by metadata value.
get_invoiceGet one sales invoice by `invoice_id`, with lines, totals, taxes, customer and payment status.
get_invoice_2Get one invoice by account id. API summary: Prepare invoice concept by account id.
get_invoice_by_reference_codeList invoices. Optional filters: year, serie or ref. API summary: Get invoice by reference code.
get_invoice_categories_by_code_date_etcSearch categories by q, elements or sort. Use this to find existing categories before creating a new category. Results are paginated. API summary: Get invoice categories by code, date, etc.
get_invoice_category_by_idGet one category by category id. API summary: Get invoice category by id.
get_invoice_expiration_by_idGet one invoice for a invoice by invoice id 2. API summary: Get invoice expiration by id.
get_invoice_invoice_prepare_by_account_idGet one invoice by account id. API summary: Prepare invoice by account id.
get_invoice_spending_prepare_by_account_idGet one invoice by account id. API summary: Prepare spending by account id.
get_invoice_spending_prepare_concept_by_account_idGet one invoice by account id. API summary: Prepare spending concept by account id.
get_leadGet one lead (sales opportunity) by `lead_id`, with amount, funnel phase, customer and dates.
get_manufacturerGet one manufacturer by manufacturer id. API summary: Find manufacturer by id.
get_messageGet one message by message id. API summary: Get delivery note by id.
get_my_invoices_by_code_date_etcSearch invoices by q, elements or sort. Use this to find existing invoices before creating a new invoice. Results are paginated. API summary: Get my invoices by code, date, etc.
get_orderGet one order by order id. API summary: Find purchase by id.
get_panelGet one panel by panel. API summary: Default dashboard panel.
get_panel_analysis_widget_by_idGet one panel by widget. API summary: Default dashboard panel.
get_payment_status_optionsGet the current status of a payment. API summary: List of status options.
get_planGet one plan by plan id. API summary: Get plan by id.
get_productGet one product by `product_id`, with prices, taxes and stock settings. Optionally pass `price_list_id` for that price list's price.
get_product_2Get one product by product id. API summary: Find product family by id.
get_product_status_optionsGet the current status of a product. API summary: List of status options.
get_sales_document_typeGet one sales document type by sales document type id. API summary: Find Sales Document Type by id.
get_seriesGet one series by series id. API summary: Find invoice rectify serie by id.
get_spendingGet one spending (expense or supplier invoice) by `spending_id`, with lines, totals and provider.
get_spending_categories_by_code_date_etcSearch categories by q, elements or sort. Use this to find existing categories before creating a new category. Results are paginated. API summary: Get spending categories by code, date, etc.
get_spending_category_by_idGet one category by category id. API summary: Get spending category by id.
get_spending_expirations_by_code_date_etcSearch invoices by q, account, date from, date to, status or payment document. Use this to find existing invoices before creating a new invoice. Results are paginated. API summary: Get spending expirations by code, date, etc.
get_spendings_by_reference_codeList invoices. Optional filters: serie or ref. API summary: Get spendings by reference code.
get_storeGet one store by store id. API summary: Find a product store by id.
get_tagGet one tag by tag name. API summary: Find account tag by name.
get_userGet one user by user id. API summary: Find user by id.
list_account_summariesList summaries for a account. API summary: List of banks available to integrate.
list_account_tasksList tasks for a account. Optional filters: date from or date to. API summary: Find account activities.
list_accountsList accounts. Optional filters: alias. API summary: Find an account by alias.
list_accounts_analysis_bank_accountList accounts. Optional filters: date from or date to. API summary: Analysis bank account.
list_activity_typesSearch invoices by q or elements. Use this to find existing invoices before creating a new invoice. Results are paginated. API summary: List activity types.
list_aggregation_paymentsList payments for a aggregation. Optional filters: from. API summary: Getting bank aggregation transactions.
list_all_contact_tagsList tags. API summary: List all contact tags.
list_all_invoice_tagsList tags. API summary: List all invoice tags.
list_available_operation_typesSearch invoices by q, elements or sort. Use this to find existing invoices before creating a new invoice. Results are paginated. API summary: List available operation types.
list_available_payment_methodsSearch payments by q or elements. Use this to find existing payments before creating a new payment. Results are paginated. API summary: List available payment methods.
list_available_user_languagesSearch languages by q or elements. Use this to find existing languages before creating a new language. Results are paginated. API summary: List available user languages.
list_available_user_rolesList users. API summary: List available user roles.
list_avatarsList avatars. Optional filters: small. API summary: User avatar.
list_bank_summarized_by_categoriesList categories. Optional filters: date from, date to or category. API summary: List bank summarized by categories.
list_banksSearch accounts by q, elements or sort. Use this to find existing accounts before creating a new account. Results are paginated. API summary: List banks.
list_categoriesList categories. Optional filters: bank id, date from, date to or category. API summary: List bank summarized by bank+categories.
list_companiesList companies. API summary: List of all available account types.
list_companies_company_informationList companies. API summary: Company information.
list_companies_spending_categories_allList companies. API summary: List of all spending categories.
list_contact_avatarsList avatars for a contact. Optional filters: small. API summary: Get contact avatar by id.
list_defaultsList defaults. API summary: Default dashboard panel.
list_delivery_timesList delivery times. API summary: List of delivery time options.
list_emails_inboxesSearch messages by q or elements. Use this to find existing messages before creating a new message. Results are paginated. API summary: List emails inboxes.
list_emails_signaturesSearch messages by q or elements. Use this to find existing messages before creating a new message. Results are paginated. API summary: List emails signatures.
list_emails_templatesSearch messages by q or elements. Use this to find existing messages before creating a new message. Results are paginated. API summary: List emails templates.
list_invoice_expiration_statesSearch invoices by q or elements. Use this to find existing invoices before creating a new invoice. Results are paginated. API summary: List invoice expiration states.
list_invoice_series_search_by_nameSearch series by q, elements or sort. Use this to find existing series before creating a new series. Results are paginated. API summary: List invoice series search by name.
list_invoice_statesSearch invoices by q or elements. Use this to find existing invoices before creating a new invoice. Results are paginated. API summary: List Invoice States.
list_invoice_typesSearch invoices by q or elements. Use this to find existing invoices before creating a new invoice. Results are paginated. API summary: List Invoice Types.
list_invoicesList invoices. API summary: List of all accounting account types.
list_invoices_invoice_expirations_by_invoiceList invoices for a invoice. Optional filters: elements. Results are paginated. API summary: Get invoice expirations by code, date, etc.
list_languagesList languages. API summary: List of all languages.
list_logosList logos. Optional filters: small. API summary: Get company logo by id.
list_logos_session_plan_logoList logos. API summary: Plan Logo.
list_logos_settings_plan_logoList logos. API summary: Plan Logo.
list_of_all_activity_typesList companies. API summary: List of all activity types.
list_of_all_available_retentionsList companies. API summary: List of all available retentions.
list_of_all_coloursList companies. API summary: List of all colours.
list_of_all_countriesList companies. API summary: List of all countries.
list_of_all_currenciesList companies. API summary: List of all currencies.
list_of_all_invoice_expiration_statesList companies. API summary: List of all invoice expiration states.
list_of_all_invoice_rectify_seriesList companies. API summary: List of all invoice rectify series.
list_of_all_invoice_statesList companies. API summary: List of all invoice states.
list_of_all_invoice_typesList companies. API summary: List of all invoice types.
list_of_all_languagesList companies. API summary: List of all languages.
list_of_all_operation_categoriesList companies. Optional filters: sort. API summary: List of all operation categories.
list_of_all_payment_methodsList companies. API summary: List of all payment methods.
list_of_all_phases_of_a_funnelList companies. API summary: List of all phases of a funnel.
list_of_all_plansList companies. API summary: List of all plans.
list_of_all_sales_typesList companies. API summary: List of all sales types.
list_of_all_seriesList companies. API summary: List of all series.
list_of_all_spending_categoriesList companies. API summary: List of all spending categories.
list_of_all_spending_expiration_statesList companies. API summary: List of all spending expiration states.
list_of_all_spending_seriesList companies. API summary: List of all spending series.
list_of_all_spending_statesList companies. API summary: List of all spending states.
list_of_all_taxesList companies. API summary: List of all taxes.
list_of_all_user_languagesList companies. API summary: List of all user languages.
list_of_companies_registeredList companies. API summary: List of companies registered.
list_of_paymentsSearch payments by q, account, date from, date to, spending id or spending number. Use this to find existing payments before creating a new payment. Results are paginated. API summary: List of payments.
list_of_sort_optionsList sort options. API summary: List of sort options.
list_panelsList panels. API summary: Available panels.
list_pdf_templatesSearch messages by q or elements. Use this to find existing messages before creating a new message. Results are paginated. API summary: List pdf templates.
list_pendingsList pendings. Optional filters: type. Results are paginated. API summary: logs for by external id.
list_product_familiesSearch products by q, name, elements or sort. Use this to find existing products before creating a new product. Results are paginated. API summary: List product families.
list_profitsList profits. Optional filters: date from or date to. API summary: Analysis profits.
list_sort_optionsList sort options. API summary: List of sort options.
list_sort_options_accounting_sort_optionsList sort options. API summary: List of sort options.
list_sort_options_bank_transactions_category_sort_optionsList sort options. API summary: List of sort options.
list_sort_options_bank_transactions_sort_optionsList sort options. API summary: List of sort options.
list_sort_options_contacts_sort_optionsList sort options. API summary: List of sort options.
list_sort_options_invoices_sort_optionsList sort options. API summary: List of sort options.
list_sort_options_products_sort_optionsList sort options. API summary: List of sort options.
list_spending_documentsList documents for a spending. API summary: Get spendings document by id.
list_spending_expiration_statesSearch invoices by q or elements. Use this to find existing invoices before creating a new invoice. Results are paginated. API summary: List spending expiration states.
list_spending_expirationsList expirations for a spending. Optional filters: elements. Results are paginated. API summary: Get spending expirations by code, date, etc.
list_spending_series_search_by_nameSearch series by q, elements or sort. Use this to find existing series before creating a new series. Results are paginated. API summary: List spending series search by name.
list_spending_statesSearch invoices by q or elements. Use this to find existing invoices before creating a new invoice. Results are paginated. API summary: List Spending States.
list_tagsList tags. API summary: List all account tags.
list_unitsList units. API summary: List of measurement units.
list_usages_optionsList usages options. API summary: List of usages options.
list_user_avatarsList avatars for a user. Optional filters: small. API summary: Get user avatar by id.
list_usersList users. API summary: User tokens.
pay_transferMoves moneyPay a transfer (external id). Financial or irreversible action; may require approval. API summary: update metadatas by external id.
remove_invoice_expiration_by_idDeletesPermanently delete a invoice by invoice id 2. Destructive action; may require approval. API summary: Remove invoice expiration by id.
search_account_addressesSearch addresses for a account by q, elements or sort. Use this to find existing addresses before creating a new address. Results are paginated. API summary: Find account addresses by address, zip code, province.
search_accountingsSearch accountings by q, type or elements. Use this to find existing accountings before creating a new accounting. Results are paginated. API summary: List accounting accounts.
search_accountsSearch accounts (clients and providers) by `q`, `name`, `vat`, `alias`, `tags`, `country` or creation dates. Paginate with `offset` and `elements`. Use this to find an account's ID.
search_accounts_account_field_valuesSearch accounts for a account by name or elements. Use this to find existing accounts before creating a new account. Results are paginated. API summary: Find account custom fields.
search_activitiesSearch activities (calls, meetings, tasks) by `q`, `account_id`, `contact_id` or `activity_type`. Paginate with `offset` and `elements`.
search_availablesSearch availables by q, elements or sort. Use this to find existing availables before creating a new available. Results are paginated. API summary: List of banks available to integrate.
search_budgetsSearch budgets (quotes) by `q`. Paginate with `offset` and `elements`.
search_categoriesSearch categories by q, elements or sort. Use this to find existing categories before creating a new category. Results are paginated. API summary: Get bank transactions categories by name.
search_coloursSearch colours by q or elements. Use this to find existing colours before creating a new colour. Results are paginated. API summary: List available colours.
search_contactsSearch contacts (people) by `q`, `name`, `surname`, `email`, `phone`, `tags` or `account_id`. Paginate with `offset` and `elements`.
search_currenciesSearch currencies by q or elements. Use this to find existing currencies before creating a new currency. Results are paginated. API summary: List of currencies.
search_documentsSearch documents by q or elements. Use this to find existing documents before creating a new document. Results are paginated. API summary: List available payment documents.
search_funnelsSearch funnels by q or elements. Use this to find existing funnels before creating a new funnel. Results are paginated. API summary: List funnels.
search_invoice_due_datesSearch invoice payment due dates (expirations) by `account`, `status`, `invoice_id`, `invoice_number` or a date range. Use to find unpaid or overdue amounts.
search_invoicesSearch sales invoices by `q`, reference `ref`, `account`, `state`, `serie`, `tags`, `category` or a date range (`date_from`, `date_to`). Paginate with `offset` and `elements`.
search_invoices_2Search invoices by q, customer, provider, creditor or elements. Use this to find existing invoices before creating a new invoice. Results are paginated. API summary: List account types by name or type.
search_invoices_recurring_invoices_by_parametersSearch invoices by q, active or elements. Use this to find existing invoices before creating a new invoice. Results are paginated. API summary: Recurring Invoices by code, date, etc.
search_invoices_recurring_spendings_by_parametersSearch invoices by q or elements. Use this to find existing invoices before creating a new invoice. Results are paginated. API summary: Listar gastos periódicos por código, fecha.
search_invoices_spendings_operation_types_by_parametersSearch invoices by q or elements. Use this to find existing invoices before creating a new invoice. Results are paginated. API summary: List available operation types.
search_languagesSearch languages by q or elements. Use this to find existing languages before creating a new language. Results are paginated. API summary: List available languages.
search_leadsSearch leads (sales opportunities) by `q`, `name`, `account` or `ongoing` status. Paginate with `offset` and `elements`.
search_manufacturersSearch manufacturers by q, elements or sort. Use this to find existing manufacturers before creating a new manufacturer. Results are paginated. API summary: List manufacturers by criteria.
search_messagesSearch messages by q or elements. Use this to find existing messages before creating a new message. Results are paginated. API summary: List pdf templates.
search_messages_delivery_notes_by_parametersSearch messages by q, elements or sort. Use this to find existing messages before creating a new message. Results are paginated. API summary: Delivery note by code, date, etc.
search_messages_invoices_templatesSearch messages by q or elements. Use this to find existing messages before creating a new message. Results are paginated. API summary: List pdf templates.
search_ordersSearch orders by q or elements. Use this to find existing orders before creating a new order. Results are paginated. API summary: List purchases search by alias or name.
search_password_change_requestsSearch password change requests by email. Use this to find existing password change requests before creating a new password change request. API summary: Change password request.
search_paymentsSearch payments by q, date from, date to, bank id, alias or iban. Use this to find existing payments before creating a new payment. Results are paginated. API summary: List bank transactions.
search_phasesSearch phases by q or elements. Use this to find existing phases before creating a new phase. Results are paginated. API summary: List phases of a funnel.
search_plansSearch plans by q, state, elements or sort. Use this to find existing plans before creating a new plan. Results are paginated. API summary: List available plans.
search_price_listsSearch price lists by q or elements. Use this to find existing price lists before creating a new price list. Results are paginated.
search_productsSearch products and services by `q`, `family`, `status` or `usage`. Paginate with `offset` and `elements`.
search_receiptsSearch receipts by q, account, date from, date to, invoice id or invoice number. Use this to find existing receipts before creating a new receipt. Results are paginated. API summary: List of receipts.
search_retentionsSearch retentions by q or elements. Use this to find existing retentions before creating a new retention. Results are paginated. API summary: List available retentions by criteria.
search_sales_document_typesSearch sales document types by q or elements. Use this to find existing sales document types before creating a new sales document type. Results are paginated. API summary: List All Document Sales Types.
search_seriesSearch series by q, elements or sort. Use this to find existing series before creating a new series. Results are paginated. API summary: List invoice rectify series search by name.
search_spendingsSearch spendings (expenses and supplier invoices) by `q`, `ref`, `account`, `state`, `category` or a date range. Paginate with `offset` and `elements`.
search_storesSearch stores by q, elements or sort. Use this to find existing stores before creating a new store. Results are paginated. API summary: List product stores.
search_taxesSearch taxes by q or elements. Use this to find existing taxes before creating a new tax. Results are paginated. API summary: List available taxes.
search_time_entriesSearch logged time entries by `q`, `user_id`, `task_name`, `project_alias`, `project_customer` or a date range.
search_usersSearch users by q, name, email, active, elements or sort. Use this to find existing users before creating a new user. Results are paginated. API summary: List users search by name or email.
submit_invoiceVisible to othersClone a invoice. Has effects visible outside this system. API summary: Post/Clone invoice.
submit_spendingVisible to othersClone a spending. Has effects visible outside this system. API summary: Post/Clone spending.
update_accountVisible to othersUpdate an existing account. Pass `body` with the account `id` and the fields to change.
update_account_custom_fieldVisible to othersUpdate an existing account. Has effects visible outside this system. API summary: Update account custom field.
update_account_tagChanges dataUpdate an existing tag identified by tag name. API summary: Add tag to an account.
update_accounts_account_bank_updateVisible to othersUpdate an existing account. Has effects visible outside this system. API summary: Put/Update bank account.
update_accounts_account_field_value_update_quickVisible to othersUpdate an existing account identified by account id. Has effects visible outside this system. API summary: Update account custom field.
update_addressesVisible to othersUpdate an existing address. Has effects visible outside this system. API summary: Put/Update account address.
update_aggregation_paymentChanges dataUpdate an existing payment identified by workflow id. API summary: Create bank aggregation transaction.
update_budgetsVisible to othersUpdate an existing budget. Has effects visible outside this system. API summary: Put/Update new budget.
update_campaignsVisible to othersUpdate an existing campaign. Has effects visible outside this system. API summary: Put/Update new campaign.
update_categoriesVisible to othersUpdate an existing category. Has effects visible outside this system. API summary: Put/Update new invoice category.
update_companiesVisible to othersUpdate an existing company. Has effects visible outside this system. API summary: Put/Update company for integrators.
update_companies_subscription_requestVisible to othersUpdate an existing company. Has effects visible outside this system. API summary: Put/Update subscription.
update_companies_user_information_updateVisible to othersUpdate an existing company. Has effects visible outside this system. API summary: User info update.
update_contactVisible to othersUpdate a contact. Pass the contact `id` plus the fields to change.
update_contact_tagChanges dataUpdate an existing tag identified by tag name. API summary: Add tag to a contact.
update_external_metadataVisible to othersUpdate an existing metadata identified by external id. Has effects visible outside this system. API summary: update metadatas by external id.
update_external_subscriptionsVisible to othersUpdate an existing subscription identified by external id. Has effects visible outside this system. API summary: Put/Update subscription.
update_invoiceVisible to othersUpdate a sales invoice. Pass the invoice `id` plus the fields to change, such as concepts, dates, notes or state.
update_invoice_tagChanges dataUpdate an existing tag identified by tag name. API summary: Add tag to an invoice.
update_invoices_invoice_expirations_updateVisible to othersUpdate an existing invoice identified by invoice id. Has effects visible outside this system. API summary: Put/Update invoice expirations.
update_leadVisible to othersUpdate a lead. Pass the lead `id` plus the fields to change, such as `phase`, `amount` or `end_date`.
update_manufacturersVisible to othersUpdate an existing manufacturer. Has effects visible outside this system. API summary: Put/Update new manufacturer.
update_messagesVisible to othersUpdate an existing message. Has effects visible outside this system. API summary: Put/Update new delivery note.
update_ordersVisible to othersUpdate an existing order. Has effects visible outside this system. API summary: Put/Update new purchase.
update_paymentsVisible to othersUpdate an existing payment. Has effects visible outside this system. API summary: Put/Update payment.
update_price_listsVisible to othersUpdate an existing price list. Has effects visible outside this system. API summary: Put/Update new price list.
update_productsVisible to othersUpdate an existing product. Has effects visible outside this system. API summary: Put/Update new product.
update_products_product_families_updateVisible to othersUpdate an existing product. Has effects visible outside this system. API summary: Put/Update new product family.
update_receiptsVisible to othersUpdate an existing receipt. Has effects visible outside this system. API summary: Put/Update receipt.
update_seriesVisible to othersUpdate an existing series. Has effects visible outside this system. API summary: Put/Update invoice rectify serie.
update_spending_expirationsVisible to othersUpdate an existing expiration identified by spending id. Has effects visible outside this system. API summary: Put/Update spending expirations.
update_spendingsVisible to othersUpdate an existing spending. Has effects visible outside this system. API summary: Put/Update spending.
update_storesVisible to othersUpdate an existing store. Has effects visible outside this system. API summary: Put/Update new product.
update_tagChanges dataUpdate an existing tag identified by tag name. API summary: Update account tag.
update_usersVisible to othersUpdate an existing user. Has effects visible outside this system. API summary: Put/Update user.

Set up in three steps

1
Pick the app
Create a free HeyMyApps account and choose Billage from the app list.
2
Paste your key
Paste your Billage API key. Log in to Billage as an administrator, open Perfil y ajustes (top right) › Integraciones › API Key, create a key with a name and password, and copy the generated key.
3
Add the link to your AI
You get a personal MCP link. Add it to Claude, ChatGPT or Cursor:
1. Click your name, then Settings › Connectors › Add custom connector.
2. Paste your link as the Remote MCP server URL.
3. Switch it on from the + menu in a chat.

Questions

What can the AI do in Billage?

The AI can search and read invoices, invoice due dates, budgets, spendings, accounts, contacts, products, leads, activities and time entries. It can create accounts, contacts, budgets, invoices, spendings, leads and activities, and update accounts, contacts, invoices and leads.

Does the AI see my Billage credentials?

No. Your Billage API key is encrypted at rest and never shown to the AI. After you save it, it is not shown again, not even to you. The AI only sees the results of the tools it calls.

Can I control what the AI is allowed to do?

Yes. You choose which tools are switched on, so you can start with lookups only. Creating an invoice makes a real accounting document, and updating an invoice, account or lead changes existing records, so those tools can require your approval before they run. Every tool call is logged.

Does it work with ChatGPT?

Yes. In ChatGPT, open Settings › Apps & Connectors › Advanced, turn on Developer mode and add your HeyMyApps link. Developer mode needs a paid ChatGPT plan: Plus, Pro, Business or Enterprise. The same link also works in Claude (Settings › Connectors › Add custom connector), Cursor and other MCP clients.

What does it cost?

HeyMyApps has a free plan with no credit card required. Paid plans bill per completed task. You also need your own Billage account.

Can the AI tell me who owes us money?

Yes. It searches invoice due dates by client, status or date range, which shows unpaid and overdue amounts. It can then open the invoice behind each due date to see the lines and totals.