Who can connect Aiwyn Tax MCP for the company?

A company connection is installed by an administrator.

Can I connect Aiwyn Tax MCP just for myself?

Anyone can install a personal connection within the plan’s limit and use it in their own conversations.

Do I use my Aiwyn Tax MCP account or a company account?

None: Aiwyn Tax MCP requires no login. The connection installed by the administrator already works for whoever has access to it.

Does Skyller do everything on that action list?

The list is what the vendor offers. What the AI uses in your company is what the administrator turned on, for the groups they defined — Skyller never widens the connector's access.

Does an action in Aiwyn Tax MCP happen without anyone approving it?

Reads happen within permission. Write actions have a risk level; sensitive ones show a confirmation card before running and are recorded. The company adjusts the classification when needed.

Aiwyn Tax MCP does not show up in my company's catalog.

The administrator may have hidden the integration for your company, or the vendor may have discontinued it — in that case it leaves the catalog on the next synchronization, without deleting what was already connected. Talk to whoever administers Skyller in your company.

Integration · Finance and payments

Aiwyn Tax MCP in Skyller.

Connect Aiwyn Tax MCP to Skyller and the AI starts reading from and acting in it through the functions your company enables — with each person's own login, approval before sensitive actions and a record of every call. Below, the actions and events the vendor publishes, what it takes to start and where this fits into the work.

Try it free Book a demo

Actions and events

Aiwyn Tax MCP

Finance and payments

Aiwyn Tax (formerly Column Tax) estimates federal and state taxes with Aiwyn's tax engine.

Actions: 10
Events: 0

Source: Composio catalog
Login: No login
Country: Global — no specific country
Actions list: re-read from the vendor every 24 hours
Official site: mcp.columnapi.com/mcp

Description and action names are the ones the vendor publishes, in English; action descriptions are shown summarized. Skyller does not alter that content.

10 ACTIONS

published by the vendor; the company enables only the necessary ones

0 EVENTS

triggers the system can send, when the vendor offers them

NO LOGIN

each person signs in with their own credential, encrypted

APPROVAL BY RISK

sensitive actions show a card before running

Live proof

One request, one query in Aiwyn Tax MCP and one approval.

The scene shows the path of a request; the exact actions depend on the functions your company enables in Aiwyn Tax MCP.

Input
A team member asks, in the conversation, for something that today requires opening Aiwyn Tax MCP — inside their area's space, with their login.
What Skyller does
1. 01Picks, among the enabled functions, a query action and looks the information up in Aiwyn Tax MCP with the person's own credential.
2. 02If the request requires writing something in Aiwyn Tax MCP, shows the card with what it is about to do and waits for Approve.
3. 03Returns the result in the conversation and records who asked, which action was used and when.
Result
Aiwyn Tax MCP stops being an open tab and starts answering inside the conversation — through the functions your company enabled.

What this scene does not promise

The available actions are the ones the vendor publishes for Aiwyn Tax MCP; in your company only the functions turned on by the administrator are available.
If a write action is not classified as sensitive, it may run without a card; the classification is adjustable by the company.
Being in this catalog does not mean being installed, with a valid login, working in your company.

Illustrative scene with fictitious data; no action is named because the choice depends on the functions your company enables.

Where this helps your work

Aiwyn Tax MCP inside the conversation where the work happens.

Three common situations for people who use Aiwyn Tax MCP every day. What Skyller does in each one depends on the functions your company turns on.

Reconciling

“Which September charges are still open?”

The analyst asks and Skyller queries Aiwyn Tax MCP with her login and lists the pending charges, checking them against the published collection policy.

Charges in the conversation

Recording

“Create the charge for this customer.”

Creating a charge is a sensitive action: Skyller shows the card with customer, amount and due date and only creates it in Aiwyn Tax MCP after Approve.

Charge with approval

Administering

“Reading is fine; refunding only with approval and only for the right role.”

The administrator turns on reading for the team and keeps refund and cancellation off or restricted to a group. Every call to Aiwyn Tax MCP goes in the record.

Function by function

Actions and events

What the vendor offers in Aiwyn Tax MCP.

Names as the vendor publishes them, in English, with the description summarized to its first sentence. In your company, the administrator turns on only the necessary actions; none of them runs without permission, and sensitive ones go through approval.

Showing 10 of 10

Calculate tax
AIWYN_TAX_MCP_CALCULATE_TAX
Calculate a tax return for a given jurisdiction. The 'input' argument must conform to the JSON schema returned by the tax_namespace_schema tool.
Check tax
AIWYN_TAX_MCP_CHECK_TAX
Check inputs to calculate a tax return for a given jurisdiction. The 'input' argument must conform to the JSON schema returned by the tax_namespace_schema tool.
Generate tax pdf tool
AIWYN_TAX_MCP_GENERATE_TAX_PDF_TOOL
Start async PDF generation for a tax return. The 'input' argument must conform to the JSON schema returned by the tax_namespace_schema tool.
Generate uuid v5
AIWYN_TAX_MCP_GENERATE_UUID_V5
Generate a UUID v5 based on a source uuid and namespace.
Get tax pdf tool
AIWYN_TAX_MCP_GET_TAX_PDF_TOOL
Check status of a PDF generation job. Returns the status and a download URL when completed, only use this tool after generating the tax PDF with the generate_tax_pdf tool and it successfully returns a job ID.
Tax jurisdictions
AIWYN_TAX_MCP_TAX_JURISDICTIONS
List all supported tax jurisdictions for a given tax year.
Tax namespaces
AIWYN_TAX_MCP_TAX_NAMESPACES
List all available input namespaces for a given jurisdiction. Use the returned names with the tax_namespace_schema tool to get the schema for a specific namespace. Requires a jurisdiction (e.g.
Tax namespace schema
AIWYN_TAX_MCP_TAX_NAMESPACE_SCHEMA
Get the TCB input schema for a single namespace (e.g. "irs1040", "irs1040_schedulec", "ca_form540"). Returns the properties and types for that namespace.
Tax simple return
AIWYN_TAX_MCP_TAX_SIMPLE_RETURN
Call this FIRST when beginning any tax return. Returns the curated namespace list, top-level structure guide, example input, and step-by-step filing workflow.
Tax years
AIWYN_TAX_MCP_TAX_YEARS
List all supported tax years.

Before you start

What your company needs to use Aiwyn Tax MCP.

Login: No login: the integration works as soon as the administrator installs it and enables the functions.
Who installs: An administrator connects Aiwyn Tax MCP for the company and shares it with people or groups. Anyone can connect just for themselves, within the plan's limit.
Functions: 10 published actions: the administrator turns on only the necessary ones. Sensitive ones ask for confirmation before running.
Plan: Counts as a company or personal connection within the plan's allowance; the larger plans have no cap. The connections-per-plan table is on the catalog page.

Questions from the people who decide

Common doubts before connecting Aiwyn Tax MCP.

Related integrations

Other Finance and payments integrations.

See the full catalog

Next step

Connect Aiwyn Tax MCP and try it with your team.

Try it free with your team or book a demo: together we pick the Aiwyn Tax MCP functions to enable and show the first approved action, with fictitious data.