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An AI agent on Claude reads the data in 1С/BAS, answers questions about debts and stock, and prepares documents for the accountant to confirm
The numbers live in 1С/BAS, but only the accountant knows how to get them out. The owner asks «who owes us», the manager asks «is it in stock», the supplier sends a PDF invoice that someone has to type in by hand. The 1С/BAS ↔ Claude pair puts an AI agent between people and the accounting system: it answers questions about counterparties, debts, stock and sales in plain language, drafts incoming documents from PDFs and photos, and writes a summary of the day. It never posts anything itself: every document it prepares waits for a person to confirm it. Below: what exactly moves, which scenarios we cover and which capabilities of both systems we rely on.
Before the owner asks the accountant for the debt list, the accountant builds the report in the evening, and the numbers are a day old by the time they are read.
After the owner asks the agent in the messenger and gets the current list from 1С/BAS in a minute, with the report it came from.
Before thirty supplier PDFs a week are typed into 1С/BAS line by line, and a wrong quantity is found at stock-taking.
After the agent reads the PDF and prepares the receipt draft with items and amounts, the accountant compares it with the original and posts it.
Before managers have no rights in the accounting system, so every stock question goes through the accountant or the storekeeper.
After the manager asks the agent about a specific item and gets the balance by warehouse, without any rights in 1С/BAS itself.
Before the same counterparty exists under three names, and the mess surfaces when the annual reconciliation is due.
After the agent goes through the directory overnight and hands the accountant a list of likely duplicates every week, so the cleanup takes minutes.
For those who want to check: each point links to the official documentation page it comes from.
The official BAS support portal documents its integration technologies under the title «Технології інтеграції 1С:Підприємства 8.3» — BAS is built on the 1C:Enterprise 8.3 platform.
Source: its.bas-soft.eu ↗ checked 2026-09-25According to the same documentation, the platform automatically builds a REST interface using the OData protocol, through which outside systems can read, change, create and delete data over HTTP.
Source: its.bas-soft.eu ↗ checked 2026-09-25By default Anthropic does not use inputs or outputs from its commercial products, including the platform connection, to train its models, unless the account owner explicitly allows it.
Source: privacy.claude.com ↗ checked 2026-09-27Claude answers questions about any text, pictures, charts and tables in the PDF documents you provide; all active models support PDF processing.
Source: platform.claude.com ↗ checked 2026-09-27Tool use: Claude decides when to call a function described by the client based on the request and the function's description, and returns a structured call that the client's application executes.
Source: platform.claude.com ↗ checked 2026-09-27Batch processing: the system creates a batch from the submitted requests and processes it asynchronously, each request independently, for tasks that do not need an instant answer.
Source: platform.claude.com ↗ checked 2026-09-27The limits come from both systems. The model can be wrong, so the agent never posts documents itself: every draft is confirmed by a person, and every answer names the 1С/BAS report it was built from. Claude has per-minute limits that depend on your account tier, so heavy batch tasks run at night and not during the working day. The usage is billed to your own Claude account. 1С/BAS is on the official prohibited software list: we do not take projects for state bodies, critical infrastructure or systems with state data, and with private businesses we discuss the risk openly.
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Learn more →Accounting, telephony, website, payments and messengers feed the CRM on their own.
Learn more →Orders, requests and answers around the clock, straight into your CRM.
Learn more →Flows between CRM, email, spreadsheets, payments and AI, on your own server.
Learn more →Accounting & ERPUAAlready running your accounting in 1С/BAS? We automate the work around it
See scenarios →AI modelsUSClaude inside your CRM, phone system and chats: it reads whole documents and long client histories, drafts replies and proposals, fills in cards, and a person has the final say.
See scenarios →↔
A won deal in Bitrix24 becomes a sales document in 1С/BAS, and stock, payments and shipments from 1С/BAS come back to the deal
See scenarios →↔
Prices and stock from 1С/BAS go to the WordPress site, orders and form requests from the site come back as documents in 1С/BAS
See scenarios →↔
Your Telegram bot takes orders and answers «where is my order» from 1С/BAS, and the owner gets debts, stock and daily totals in the chat
See scenarios →↔
Receipts from 1С/BAS are fiscalised in Checkbox and come back as closed sales
See scenarios →Implementation · Development · Integrations →
1С/BAS ↔ Claude API (Anthropic) — the system names are trademarks of their owners. CoreviaFlow is not affiliated with them unless stated otherwise.
