Integration
Connect freee and Karbon
When New manual journal fires in freee, your agent runs Create Organization Contact in Karbon, or New work item in Karbon to Create Item in freee. Describe the whole flow and it is built, tested on every scenario and kept running.
What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it.
Build solutions, not workarounds.
What do you want freee and Karbon to do together?
Ask the assistant
Connect your AI client
Give your AI client this address.
https://mcp.apiant.aiOne connection does both: ask your client to act in an app once, or have it build an automation that keeps running. Any client that takes a remote MCP server. Nothing to install. Create your free account, then sign in once in your browser.
Set it up in your client
Claude Code
Run this in the directory you want to work in.
claude mcp add --transport http -s project apiant-ai https://mcp.apiant.aiStart Claude Code there, approve the server, and sign in in the browser page it opens.
Claude Code guide (opens in a new tab)Claude, web and desktop
Open Customize, then Connectors, then Add custom connector, and paste the address. On Team and Enterprise an owner adds it first.
Setup guide (opens in a new tab)Cursor
Add the address to your MCP configuration as a server URL. Cursor signs you in in your browser.
Setup guide (opens in a new tab)Zed
Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server.
Setup guide (opens in a new tab)Codex and the ChatGPT desktop app
Open Settings, then MCP servers, then Add server, and choose Streamable HTTP. From the terminal, Codex takes the address with its own add command and then signs you in.
Setup guide (opens in a new tab)Any other MCP client
Paste the address where the client asks for a remote MCP server URL, and name the server apiant-ai where it lets you. APIANT's skills reach the client over the same connection.
Setup guide (opens in a new tab)Example flows
What freee and Karbon can do together
From freee to Karbon
When New manual journal in freee
then Create Organization Contact in Karbon
When Unsettled Deal in freee
then Create Person Contact in Karbon
From Karbon to freee
When New work item in Karbon
then Create Item in freee
When New work item in Karbon
then Add account item in freee
Starting points drawn from the triggers and actions in the catalog today. Describe the flow you need, at any depth, and your agent builds it and tests every scenario before it ships.
Everything your agent can do with freee and Karbon
Triggers and actions 3 triggers · 38 actions
Trigger
New manual journalTriggers when a new manual journal (振替伝票) is created in the selected freee company.
Trigger
Unsettled DealTriggers when a new unsettled income or expense deal (取引) appears in the selected freee company.
Action
Add account itemCreates a new account item (勘定科目) in a freee Accounting company and returns the created account item.
Action
Add dealCreates an income or expense deal (取引) in a freee company, with its line items and, optionally, the payments that settle it.
Action
Add manual journalCreates a manual journal (振替伝票) in a freee company, with balanced debit and credit lines.
Action
Add transferCreates a transfer (口座振替) in a freee company, moving money from one bank account, credit card or wallet to one or more other accounts.
Action
Create ItemCreates a new item (品目) in a freee company, which can then be selected on deals and other transactions.
Action
Create PartnerCreates a new partner (取引先) — a customer or supplier — in a freee company, for use on deals and invoices.
Action
Create TagCreates a new memo tag (メモタグ) in a freee company, which can then be attached to deal and transfer line items.
Action
Delete dealDeletes an income or expense deal (取引) from a freee company.
Action
Get dealReturns one income or expense deal (取引) in a freee company, including its detail lines, payments, renewals and attached receipts.
Action
Get partnerReturns one partner (取引先) of a freee company by its id, including contact, address, bank account and payment-term settings.
Action
Get SectionReturns a single section (department) of a freee company by its id, including its name, official name, shortcuts and availability.
Action
Get TagReturns one memo tag (メモタグ) in a freee company by its id, including its name, shortcuts and last update date.
Action
Get TransferReturns one transfer (振替) between accounts in a freee company, including its destination account lines.
Action
List account itemsReturns the account items (勘定科目) defined for a freee company, optionally filtered by keyword or update date.
Action
List companiesReturns every freee company (事業所) the connected user belongs to, with each company's id, name, display name, company number and the user's role there.
Action
List dealsReturns the income and expense deals (取引) recorded in a freee company, optionally filtered by partner, account item, settlement status, type, dates or remaining amount.
Action
List itemsReturns the items (品目) registered in a freee company, including items marked as not in use. Optionally limited to items updated within a date range.
Action
List manual journalsReturns the manual journals (振替伝票) of a freee company, optionally filtered by date, account item, amount, partner, item, section, segment tags, comments, adjustment type or journal number.
Action
List partnersReturns the partners (取引先) registered in a freee company, optionally filtered by keyword or last-updated date. Archived partners are not included.
Action
List walletablesReturns the company's walletables — bank accounts, credit cards and other payment accounts such as cash — optionally with balances and sync status.
Action
Update dealUpdates an existing income or expense deal (取引) in freee Accounting, replacing its dates, partner, reference number, line items and attached receipts.
Action
Update partnerUpdates an existing partner (取引先) in freee Accounting. Only the details you fill in are changed; everything else keeps its current value.
Trigger
New work itemTriggers when a new work item is created in Karbon.
Action
Add client groupCreates a new client group in Karbon, optionally with members, owner, manager and client team.
Action
Add noteCreates a note in Karbon, optionally assigned to a user and linked to work items, contacts, organizations or client groups.
Action
Add work itemCreates a new work item for a client in Karbon.
Action
Create Organization ContactCreates a new Organization contact in Karbon.
Action
Create Person ContactCreates a new person Contact in Karbon and returns the created Contact record.
Action
Find an Organization ContactFinds Organization contacts in Karbon matching a full name, email address, external key or contact type, and returns the matching organizations.
Action
Find a Person ContactFinds person contacts in Karbon by email address, full name, phone number, contact type or external key, and returns the matches.
Action
Get work itemReturns the details of a single Karbon work item, including its client, dates, status, fee settings and role assignments.
Action
List invoicesReturns the invoices in your Karbon account, optionally filtered by invoice status and sorted.
Action
List timesheetsReturns a list of timesheets from your Karbon account, optionally filtered by date, user, work item or status, with their time entries if requested.
Action
List usersReturns the users in your Karbon account, optionally filtered by name or email address.
Action
List work itemsReturns the work items in your Karbon account, optionally filtered and sorted.
Action
Update client groupRenames an existing Karbon client group by changing its full name.
Action
Update Organization ContactUpdates the name or privacy level of an existing Organization contact in Karbon.
Action
Update Person ContactUpdates the name details or privacy level of an existing Person Contact in Karbon.
Action
Update work itemUpdates a Karbon work item's title, description, dates, assignee, work type, role assignments or status. Fields left blank are not changed.
No trigger or action matches that. Ask your agent to add it: it reads the API documentation and builds what you describe.
Each app on its own
Reviews
What our customers say
More from freee
freee to HubSpotHubSpot is your all-in-one stop for all of your marketing software needs.
freee to SalesforceSalesforce is a leading enterprise customer relationship management (CRM) platform.
freee to SlackSlack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...
freee to Google SheetsGoogle Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.
freee to GmailGmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...
freee to Google CalendarGoogle Calendar is a time management tool providing scheduling features, event reminders, and integration...
More into Karbon
HubSpot to KarbonHubSpot is your all-in-one stop for all of your marketing software needs.
Google Sheets to KarbonGoogle Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.
Gmail to KarbonGmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...
Google Calendar to KarbonGoogle Calendar is a time management tool providing scheduling features, event reminders, and integration...
Google Drive to KarbonGoogle Drive is a cloud storage solution for uploading, sharing, and collaborating on files across devices...
ActiveCampaign to KarbonActiveCampaign is a marketing automation, email marketing, and CRM platform.
Questions
freee and Karbon, answered
What can start an automation from freee?
Any of freee's 2 triggers in the catalog, including New manual journal and Unsettled Deal. Describe the moment in plain language and your agent picks the right one.
What can your agent do in Karbon when something happens in freee?
Any of Karbon's 16 actions, including Create Organization Contact, Create Person Contact, Update client group and Update Organization Contact. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from Karbon to freee?
Yes. When something happens in Karbon, your agent can act in freee too. This page covers both directions: Karbon's triggers and freee's actions are listed here as well.
Do I have to build a connector for freee or Karbon?
No. Both are in the catalog with their triggers and actions. You describe the automation; your agent builds it, tests every scenario and keeps it running.
Can my AI client use freee and Karbon without building an automation?
Yes. With your AI client connected to APIANT, ask it to do something in either app once and it runs that action on the spot. Ask for an automation and your agent builds it, tests every scenario and keeps it running. One connection covers both.
What happens when something fails?
Your agent works that out for you. It plans the failure paths along with the happy path, then tests every scenario before it ships.
Is there a free plan?
Yes. Every plan includes the agent, including free, and building from your own AI client spends no assistant credits.